Komatsu WB91R, WB91-93, WB93R, WB93R-2 Service Manual

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WEAM002304

Operation & Maintenance Manual

WB91R-2 WB93R-2

BACKHOE-LOADER

SERIAL NUMBER

WB91R-2 91F20250 and up WB93R-2 93F25184 and up

WARNING

Unsafe use of this machine may cause serious injury or death. Operators and maintenance personnel must read this manual before operating or maintaining this machine. This manual should be kept inside the cab for reference and periodically reviewed by all personnel who will come into contact with the machine.

FOREWORD

CAUTION

1.1 FOREWORD

• This manual has been carr ied out by Komatsu Utility in o rder to supply thei r customers with al l the necessa ry

information on the mac hine and th e safety regulatio ns rela ted to it, t ogether with the use an d maintena nce instructions tha t enable the o perator to exploit the capaci ty of the machine w ith optimal results a nd to keep the machine efficient over time.

• The operation manual, together with the spare parts catalogue, is an integral par t of the mac hin e and must ac-

company it, even when it is resold, until its final disposal.

• The manual must be handled with the greatest care and always kept on board the machine, so that it can be

consulted at any moment; it must be placed in the appropriate comp artment be hind the seat, where also the ownership documents and the logbook are usually kept (see “3.5.10 TECHNICAL DOCUMENTATION”).

• This manual must be given to the persons who have to use the machine and carry out the routine maintenance

operations; they must read the co nten ts c ar ef ull y m or e th an o nce, in s uc h a way as to clear l y un der st an d wha t are the correct operating conditions and the dangerous conditions that must be avoided. In case of loss or damage, request a new copy to Komatsu Utility or your Komatsu Utility Dealer.

• The illustrations contained in this manual may represent machine configurations available upon request.

Komatsu Utility machines are constantly improved in order to increase their efficiency and reliability; this manual sums up all the infor mation regarding the m ost recent techniques ap plied at the moment in which the machine is marketed. For any further and/or updated information, contact your Komatsu Utility Dealer.

• Punctual period ic annotation s regardi ng the mai ntenance opera tions that have been carried ou t are impo r tant

to have a clear prospect of the situation and to know exactly what has been done and what has to be done after the next maintenance interval. Therefore, it is advisable to con sult the hour meter and the maintenan ce plan frequently.

• Over the years Komatsu Utility Dealers have gathered considerable experience in customer service.

If more information is needed , do n ot hes itate to cont act your Komatsu Utility Dealer : he always knows how to get the best perform ance from the m achine, he ca n su ggest the u se of the e quipm ent tha t is most suit able for specific needs and can provide the technical assistance necessary for any change that may be required to conform the machine to the safety standards and traffic rules. Further more, Komatsu Utility Dealers also ens ure their assistance for the suppl y of Komatsu Utility genuine spare parts, which alone guarantee safety and interchangeability.

• The table included in th is m anual mus t be filled i n wit h t he ma chine data, which a re th e data that must al ways

be indicated to the Dealer when requiring assistance and ordering spare parts.

• The incorrect use of the machine and inappropriate maintenance operations may cause serious inju-

ries and even death.

• Operators and maintenance personnel must carefully read this manual before using the machine or

performing maintenance operations.

• Any serious accident that may occur during the use of the machine or during main tenance operat ions

is due to failure to comply with the instructions given herein.

• The procedures and precautions described in this manual are valid for application to the machine only

when it is used correctly. If the machine is used for any purpose or in any way other than those describ ed herein, the operator shall be responsible for his own safety and for the safety of any other person involved.

INFORMATION ON SAFETY

IMPORTANT

☞

1.2 INFORMATION ON SAFETY

Many accidents are caused by insuffi cient knowledge of and failure to comply with th e safety regulations prescribed for the maintenance operations that must be performed on the machine. In order to avoid accidents, before star ting work and before carr ying out any maintenance operation, carefully read and be sure to understand all the information and warnings contained in this manual and given on the plates applied onto the machine, so that you can follow the instructions without making mistakes. To identify the messages regarding safety that are included in this manual and written on the machine plates, the following words have been used.

DANGER

CAUTION

Komatsu Utility cannot reasonably predict every circumstance that might involve a potential hazard during the operation or maintenance of the mac hi ne; for this reason, the safety mess ag es inclu ded in thi s manual and a ppl ied onto the machine may not include all possible safety precautions. If all the procedures and operations prescribed for this machine are kept to, you can be sure that the operator and the persons in the vicinity can work in total safety, with no risk of damaging the machine. In case of doubt regarding the safety measures necessary for some procedures, contact Komatsu Utility or your local Dealer.

• This word is used in the safety warnings in the manual and on the plates when

the situation is dangerous and it may possibly result in serious injuries or even death. These messages describe the safety precautions to be taken in order to avoid any risk. Non-compliance with these instructions may also res ult in serious damage to the machine.

• Th is word is used in the safety war n ings in the manua l and on t he p lates t o sig-

nal risks that may cause moderate damage or injuries. The message can be used even to indicate th e risk of damage t o the machine only.

• This w ord is used when precautions are indicated, which must be taken to avoid

actions that may shorten the life of the machine.

DANGER

• Before starting any maintenance operation, position the machine on firm and level ground, engage the

safety locks of the equipment and of the controls, stop the engine and apply the parking brake.

DANGER

• To make the information clearer, some illustrations in this manual represent the machine without safety

guards. Do not use the machine without guar ds and do not start the engine when the engine pr ot ection casing is open, if this is not expressly prescribed for some specific maintenance operations.

INFORMATION ON SAFETY

DANGER

• It is strictly forbidden to modify the setting of the hydraulic system safety valves; Komatsu Utility can-

not be held liable for any damage to persons, property or the machine, if this has been tampered with by modifying the standard setting of the hydraulic system.

DANGER

• Before carrying out a ny electrica l wel ding, di sconne ct the batt ery and the alter nato r (See “2.8. 13 PRE-

CAUTIONS CONCERNING THE BATTERY AND THE ALTERNATOR”).

DANGER

• Install only authorized additional equipment (See “6.1 AUTHORIZED OPTIONAL EQUIPMENT”).

DANGER

• The machine can travel on roads only if provided with homologated equipment; before travelling on

roads, make sure that the equipment with which the machine is provided is homologated and that the safety locks are correctly.

INTRODUCTION

IMPORTANT

☞

1.3 INTRODUCTION

1.3.1 INTENDED USES

The Komatsu Utility BACKHOE LOADERS d escr ibed i n this manual have been desig ned and constr ucted to be used mainly for the following functions:

• LOADER

• EXCAVA TOR

Through the installation of optional equipment, the machine can also be used for the following applications:

• HANDLING OF MATERIALS (4IN1 BUCKET - PALLET FORKS)

• SNOWPLOUGH (ANGLEDOZER BLADE - SNOWPLOUGH)

• DEMOLITION (HAND HAMMER - HAMMER ON THE BACKHOE)

• DITCH CLEANING AND DIGGING (SPECIAL BUCKETS)

1.3.2 IMPROPER OR UNAUTHORIZED USES

CAUTION

• This paragraph describes some of the improper or unauthorized uses of the machine; since it is impos-

sible to predict all the possible improper uses, if the machine happens to be used f or particular applications, contact your Komatsu Utility Dealer before carrying out the work.

• The instructions regarding the authorized optional equipment are given in the relevant operation and

maintenance manuals; if the equipment is supplied by Komatsu Utility, these publications are enclosed to this manual.

• The instructions regarding the assembly of the authorized equipment, the controls requiring special ar-

rangement on the machine and the hydraulic couplings necessary for the operation of the equipment are grouped in the final section of this manual.

Komatsu Utility backhoe loaders are constr ucted exclusively for the handling, excavation and treatment of iner t materials; therefore, the following uses are absolutely forbidden:

• USE OF THE MACHINE BY MINORS OR INEXPERIENCED PERSONS.

• USE OF THE MACHINE FOR LIFTING PERSONS OR OBJECTS.

• TRANSPORTATION OF PERSONS even if they are in the operator’s cab.

• TRANSPORTATION OF CONTAINERS with fluids, flammable fluids, loose material, without the approp riate

slinging equipment.

• TRANSPORTATION AND L IFTING (EVEN IF IN EXCEPTIONAL CASES) OF EQUIPMENT OR MATERIALS

THAT PROTRUDE FROM THE BUCKET OR ARE NOT SECURED TO THE BUCKET BY MEANS OF ROPES OR CHAINS.

• USE OF THE BUCKET FOR DRIVING OR EXTRACTING PILES.

• USE OF THE MACHINE FOR TOWING DAMAGED VEHICLES ON ROADS.

• USE OF THE MACHINE FOR LIFTING DAMAGED VEHICLES.

INTRODUCTION

IMPORTANT

☞

1.3.3 MAIN CHARACTERISTICS

• Simple and easy operation.

• Servo-assisted steering with priority hydraulic system.

• 4-gear mechanical gearshift and transmission with hydraulic converter; reversal controlled by a lever positioned

under the steering wheel.

• Loader control through a single lever ensuring also combined movements that can be modulated proportionally

and continually.

• Backhoe controls with two levers ensuring also combined movements that can be modulated proportionally and

continually.

• Complete series of instruments visible from the two operating positions (loader or backhoe).

• Separate accelerator controls for the two operating positions.

• Foot brake control.

• Easy maintenance with simplified intervals.

1.3.4 RUNNING-IN

Every machine is scrupulously adjusted and tested before delivery. A new machine, however, must be used car efully for the fir st 100 hours, in order to en sure prop er runni ng-in of the various components. If the machine is subj ected to excessive work loa d at the beginni ng of operation, its potential yiel d and its functionality will be shortly and untimely reduced. Every new machine must be used carefully, paying special attention to the following indications:

• After the star t, let the engine idl e for 5 minutes, in such a way as to warm it up gradually before actual opera-

tion.

• Avoid operating the machine with the limit loads allowed or at high speed.

• Avoid abrupt starts or accelerations, useless sudden decelerations and abrupt reversals.

• After the first 250 hours, carr y out the following operations, in addition to those to be performed every 250

hours: 1 - Change the hydraulic transmission oil and filter. 2 - Change the differential unit oil (front and rear axle). 3 - Change the oil in the final reduction gears (front and rear axle). 4 - Check and adjust the engine valve clearance. 5 - Change the hydraulic circuit oil filter.

SYNTHETIC BIODEGRADABLE OIL TYPE HEES

On machines in whic h t he s y nthe tic bi ode gradable oil ty pe HEE S is us ed, the following ope rations ar e t o be per formed besides the standard maintenance operations:

• After the first 50 hours of operation, change the hydraulic circuit drain filter.

• After the first 500 hours of operation, change the hydraulic circuit oil.

• When changing the oil filters (cartridges), check their innner part to make sure that there are no depos-

its. If considerable deposits are observed, find out what may have caused them before starting the machine.

• The number of operation hours is indicated by the hour meter.

INTRODUCTION

1.4 PRODUCT IDENTIFICATION

The Komatsu Utility backhoe loader a nd its main com ponents are identifi ed by serial numbers s tamped on the identification plates. The serial number and the identification numbers of the components are the only numbers that must be indicated to the Dealer when requiring assistance and ordering spare parts.

1.4.1 MACHINE SERIAL NUMBER

The machine ser ial number is stampe d on the front par t of the main frame, on the right side.

RWAB0070

1.4.2 MACHINE IDENTIFICATION PLATE

The Komatsu Utility backhoe loader s described in this manual are provided with the CE mar k, which certifies th at they are in compliance with the CE harmonized standards. The plate with the mark is appl ied inside the operator’s cab, on the left vertical wall of the frame, in correspondence with the brake pedals.

RWA04680

MODELLO - MODEL TYP - MODELE

MATRICOLA N˚ - SERIAL N˚ FABR. NR. - SERIE NR.

ANNO - YEAR BAUJAHR - ANNEE

MASSA TOTALE MAX - TOTAL MAX WEIGHT ZUL. GESAMTGEWICHT - POIDS TOTAL MAX

POTENZA MOTORE - ENGINE POWER LEISTUNG - PUISSANCE MOTEUR

MASSA MAX ASSE ANT. - MAX WEIGHT FRONT AXLE ZUL. ACHSLAST VORN - POIDS MAX ESSIEU AV

MASSA MAX ASSE POST. - MAX WEIGHT REAR AXLE ZUL. ACHSLAST HINTEN - POIDS MAX ESSIEU AR

MANUFACTURED BY KOMATSU UTILITY EUROPE S.p.A. 36025 NOVENTA VICENTINA (VI) ITALY

21D-98-12580

RWA34270

MODEL

SERIAL N

YEAR

TOTAL MAX WEIGHT

ENGINE POWER

MAX WEIGHT FRONT AXLE

MAX WEIGHT REAR AXLE

MANUFACTURED BY KOMATSU UTILITY EUROPE S.p.A. 36025 NOVENTA VICENTINA (VI) ITALY

1.4.3 ENGINE SERIAL NUMBER AND EXHAUST GAS EMISSION PLATE

The engine serial number is stam ped on the pl ate posi tioned on the rear side of the tappet cover.

The plate regardin g the exhaust emission r egulations is applied to the front side of the tappet cover.

INTRODUCTION

RWAB0480

1.4.4 FRONT AXLE SERIAL NUMBER

The serial number of the fro nt axle is st amp ed on the plate positioned on the right side of the axle body.

1.4.5 REAR AXLE SERIAL NUMBER

The serial number o f the rear axle i s sta mped on the pl ate pos itioned on the right side of the axle body.

RWAB0620

RWA02450

RWA02460

INTRODUCTION

1.4.6 TRANSMISSION SERIAL NUMBER

The transmission serial number is stamped on the plate postioned on the right side of the transmission case.

RWA02540

1.4.7 CAB SERIAL NUMBER

The cab serial number is stamped on the plate positioned on the right center pillar.

1.4.8 CANOPY SERIAL NUMBER (if provided)

The serial number is stam ped on the plate po sitioned inside the canopy, on the front right part.

RWA02500

RWA18190

1.4.9 SERIAL NUMBERS AND DEALER’S ADDRESS

Machine n. Model Engine n. Front axle n. Rear axle n. Transmission n.

Cab n.

Canopy n.

Dealer:

INTRODUCTION

Address:

Person to contact:

NOTES:

Tel.

THIS PAGE WAS INTENTIONALLY LEFT EMPTY

Page

TABLE OF CONTENTS

1.1 FOREWORD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 INFORMATION ON SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3.1 INTENDED USES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3.2 IMPROPER OR UNAUTHORIZED USES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3.3 MAIN CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3.4 RUNNING-IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.4 PRODUCT IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4.1 MACHINE SERIAL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4.2 MACHINE IDENTIFICATION PLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4.3 ENGINE SERIAL NUMBER AND EXHAUST GAS EMISSION PLATE. . . . . . . . . . . . . . . . . . 7

1.4.4 FRONT AXLE SERIAL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4.5 REAR AXLE SERIAL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4.6 TRANSMISSION SERIAL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.4.7 CAB SERIAL NUMBER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.4.8 CANOPY SERIAL NUMBER (if provided) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.4.9 SERIAL NUMBERS AND DEALER’S ADDRESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SAFETY AND ACCIDENT PREVENTION

2.1 SAFETY, NOISE AND VIBRATION PLATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.1.1 POSITION OF THE SAFETY PLATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.1.2 PICTOGRAMS AND RELEVANT MEANINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.3 POSITION OF THE NOISE PLATES ON MACHINES WITH CAB (model WB91R-2) . . . . . . 26

2.1.4 POSITION OF THE NOISE PLATES ON MACHINES WITH CAB (model WB93R-2) . . . . . . 27

2.1.5 VIBRATIONS TO WHICH THE OPERATOR IS SUBJECTED . . . . . . . . . . . . . . . . . . . . . . . . 28

2.2 GENERAL PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.2.1 GENERAL SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.2.2 SAFETY DEVICES AND GUARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.2.3 CLOTHING AND PERSONAL PROTECTION ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.2.4 UNAUTHORIZED MODIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2.2.5 LEAVING THE OPERATOR’S SEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2.2.6 GETTING ON AND OFF THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.7 CHECKING THE REAR-VIEW MIRRORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.8 PREVENTING FIRES DUE TO FUEL AND OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.9 PREVENTING BURNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.2.10 PREVENTING DAMAGE DUE TO ASBESTOS POWDER . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.2.11 PREVENTING DAMAGE CAUSED BY THE WORK EQUIPMENT . . . . . . . . . . . . . . . . . . . . 33

2.2.12 FIRE EXTINGUISHERS AND FIRST AID KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.2.13 PRECAUTIONS CONCERNING THE CAB STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.2.14 PRECAUTIONS CONCERNING THE EQUIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.3 PRECAUTIONS TO BE TAKEN BEFORE STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . 34

2.3.1 SAFETY ON THE WORK SITE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2.3.2 FIRE PREVENTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2.3.3 PRECAUTIONS TO BE TAKEN FOR THE OPERATOR'S CAB . . . . . . . . . . . . . . . . . . . . . . 34

2.3.4 ROOM VENTILATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2.3.5 CLEANING WINDOWS, MIRRORS AND LIGHTS - CHECKING THE WINDSHIELD

WIPER BLADES AND THE BULBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

TABLE OF CONTENTS

Page

2.4 PRECAUTIONS TO BE TAKEN WHEN WORKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.4.1 STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.4.2 RULES FOR ROAD TRAVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.4.3 CHECKS FOR TRAVELLING IN REVERSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

2.4.4 MOVING THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

2.4.5 WORKING ON SLOPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

2.4.6 PREVENTING ELECTROCUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

2.4.7 VISIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2.4.8 WORKING ON ICY OR SNOW-COVERED SURFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2.4.9 PREVENTING DAMAGE CAUSED BY THE WORK EQUIPMENT . . . . . . . . . . . . . . . . . . . . 40

2.4.10 WORKING ON LOOSE GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2.4.11 PARKING THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

2.5 TRANSPORTING THE MACHINE ON MOTOR VEHICLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.5.1 LOADING AND UNLOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.5.2 TRANSPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.6 BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.6.1 PREVENTING RISKS THAT MAY BE DUE TO THE BATTERY . . . . . . . . . . . . . . . . . . . . . 43

2.6.2 STARTING WITH BOOSTER CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.7 PRECAUTIONS FOR THE REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

2.8 PRECAUTIONS FOR MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.8.1 WARNING PLATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.8.2 TOOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.8.3 PERSONNEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.8.4 EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2.8.5 WORKING UNDER THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2.8.6 CLEANING THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2.8.7 USE OF THE ENGINE DURING MAINTENANCE OPERATIONS . . . . . . . . . . . . . . . . . . . . . 47

2.8.8 PERIODICAL CHANGE OF THE PARTS THAT ARE CRITICAL FOR SAFETY . . . . . . . . . . 47

2.8.9 STOP THE ENGINE BEFORE CARRYING OUT ANY MAINTENANCE OPERATION

OR INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2.8.10 RULES TO BE FOLLOWED DURING FUEL OR OIL TOPPING UP . . . . . . . . . . . . . . . . . . . 49

2.8.11 CHECKING THE COOLANT LEVEL IN THE RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2.8.12 USING LAMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2.8.13 PRECAUTIONS CONCERNING THE BATTERY AND THE ALTERNATOR . . . . . . . . . . . . . 50

2.8.14 PRECAUTIONS CONCERNING THE STARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2.8.15 HANDLING HIGH-PRESSURE PIPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.8.16 PRECAUTIONS TO BE TAKEN WHEN HANDLING HIGH-PRESSURE OIL. . . . . . . . . . . . . 51

2.8.17 PRECAUTIONS FOR MAINTENANCE OPERATIONS AT HIGH TEMPERATURES

AND HIGH PRESSURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.8.18 COOLING FAN AND BELT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.8.19 WASTE MATERIALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.8.20 PRECAUTIONS TO BE TAKEN WHEN INFLATING TYRES . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.8.21 PRECAUTIONS FOR THE INSTALLATION OF THE EXHAUST SYSTEM TAILPIPE. . . . . . 53

2.8.22 PRECAU TIONS FOR THE USE OF THE SYNTHETIC BIODEGRADABLE OIL

TYPE HEES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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DESCRIPTION AND USE OF THE MACHINE

3.1 SAFETY LOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

3.1.1 FRONT LOADER LOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

3.1.2 BACKHOE LOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

3.2 GENERAL VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3.2.1 FRONT GENERAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3.2.2 BACKHOE GENERAL VIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

3.2.3 CAB INSIDE GENERAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

3.2.3.1 CAB INSIDE GENERAL VIEW (Standard version) . . . . . . . . . . . . . . . . . . . . . . . . 61

3.2.3.2 CAB INSIDE GENERAL VIEW (Version with servcontrols available on request) . 62

3.3 INSTRUMENTS AND CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.3.1 FRONT INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.3.2 SIDE INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

3.3.2.1 SIDE INSTRUMENTS (Standard version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

3.3.2.2 SIDE INSTRUMENTS (Version with servo controls available on request) . . . . . . 68

3.3.3 PUSH BUTTONS ON THE FRONT LOADER CONTROL LEVER . . . . . . . . . . . . . . . . . . . . . 75

3.3.4 PUSH BUTTON ON THE GEARSHIFT LEVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.3.5 ELECTRICAL ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

3.3.6 MACHINE CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

3.3.6.1 MACHINE CONTROLS (Standard version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

3.3.6.2 MACHINE CONTROLS (Version with servo controls available upon request) . . . 78

3.4 FUSES AND RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

3.4.1 EQUIPMENT FUSES AND RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

3.4.1.1 FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

3.4.1.2 RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3.4.2 ENGINE FUSES AND RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3.4.2.1 FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

3.4.2.2 RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

3.4.3 SIDE DASHBOARD RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

3.4.4 SIDE DASHBOARD RELAYS AND FUSES (Only with servo controls) . . . . . . . . . . . . . . . . . 110

3.4.2.1 FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

3.5 GUARDS, CAB AND DRIVER’S SEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

3.5.1 ENGINE HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

3.5.2 CANOPY (if provided) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

3.5.3 CAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

3.5.4 VENTILATION AND HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

3.5.5 AIR CONDITIONER (if installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

3.5.6 SEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

3.5.6.1 SEAT (STANDARD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

3.5.6.2 SEAT (OPTIONAL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

3.5.7 SAFETY BELT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

3.5.8 FIRE EXTINGUISHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

3.5.9 FIRST AID KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

3.5.10 TECHNICAL DOCUMENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

3.5.11 ADDITIONAL TOOL BOX (if provided) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

3.6 USE OF THE MACHINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

3.6.1 CHECKS BEFORE STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

3.6.1.1 VISUAL CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

3.6.1.2 DAILY CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

3.6.1.3 OPERATIONAL CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

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3.6.2 STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

3.6.2.1 STARTING WITH WARM ENGINE OR IN TEMPERATE CLIMATES . . . . . . . . . 125

3.6.2.2 STARTING WITH COLD ENGINE OR IN COLD CLIMATES . . . . . . . . . . . . . . . . 126

3.6.3 WARMING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

3.6.4 HEATING THE HYDRAULIC OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

3.6.5 HOW TO MOVE THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

3.6.5.1 DIFFERENTIAL LOCKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

3.6.5.2 ENGAGING THE FOUR-WHEEL DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

3.6.5.3 WORKING ON SLOPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

3.6.5.4 MAXIMUM IMMERSION DEPTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

3.7 PARKING THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

3.7.1 PARKING ON LEVEL GROUND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

3.7.2 PARKING ON SLOPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

3.8 STOPPING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

3.9 TRANSPORTING THE MACHINE ON MOTOR VEHICLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

3.9.1 LOADING AND UNLOADING THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

3.9.2 TRANSPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

3.10 PRECAUTIONS TO BE TAKEN IN THE COLD SEASON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

3.10.1 FUEL AND LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

3.10.2 COOLANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

3.10.3 BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

3.10.4 OTHER PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

3.10.5 PRECAUTIONS TO BE TAKEN AT THE END OF WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

3.11 PRECAUTIONS TO BE TAKEN IN THE WARM SEASON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

3.12 USING THE MACHINE AS A LOADER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

3.12.1 BUCKET POSITION INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

3.12.2 ORGANIZING THE WORK AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

3.12.2.1 LOADING HEAPED AND LEVEL MATERIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

3.12.2.2 LOADING OPERATIONS ON SLOPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

3.12.3 CHANGING THE STANDARD FRONT BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

3.13 USING THE MACHINE AS AN EXCAVATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

3.13.1 POSITIONING THE BUCKET ACCORDING TO THE WORK

THAT MUST BE CARRIED OUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

3.13.2 POSITIONING THE MACHINE FOR DIGGING OPERATIONS . . . . . . . . . . . . . . . . . . . . . . 144

3.13.3 SLIDING THE BACKHOE UNIT SIDEWARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

3.13.4 DIGGING METHOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

3.13.5 CHANGING THE BACKHOE BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

3.14 LONG PERIODS OF INACTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

3.14.1 BEFORE THE PERIOD OF INACTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

3.14.2 DURING THE PERIOD OF INACTIVITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

3.14.3 AFTER THE PERIOD OF INACTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

3.15 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

3.15.1 HOW TO REMOVE THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

3.15.2 AFTER THE FUEL HAS RUN OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

3.15.3 IF THE BATTERY IS DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

3.15.3.1 STARTING WITH BOOSTER CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

3.15.4 OTHER TROUBLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

3.15.4.1 ELECTRICAL CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

3.15.4.2 HYDRAULIC SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

3.15.4.3 BRAKING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

3.15.4.4 CONVERTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

3.15.4.5 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

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MAINTENANCE

4.1 GUIDE TO MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

4.2 MAINTENANCE NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

4.2.1 NOTES REGARDING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

4.2.1.1 ENGINE OIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

4.2.1.2 COOLANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

4.2.1.3 FUEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

4.2.2 NOTES REGARDING THE HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

4.2.3 NOTES REGARDING THE ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

4.2.4 NOTES REGARDING LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

4.2.5 PARTS SUBJECT TO WEAR THAT PERIODICALLY NEED CHANGING . . . . . . . . . . . . . . 163

4.3 FUEL, COOLANT AND LUBRICANTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

4.3.1 HOMOLOGATED HEES SYNTHETIC BIODEGRADABLE LUBRICANTS. . . . . . . . . . . . . . . 166

4.4 DRIVING TORQUES FOR SCREWS AND NUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

4.4.1 STANDARD DRIVING TORQUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

4.4.2 SPECIFIC TIGHTENING TORQUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

4.5 LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

4.5.1 LUBRICATION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

4.5.2 LUBRICATION DIAGRAM (4in1 bucket and pallet forks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

4.5.3 LUBRICATION DIAGRAM (Front bucket rapid couplings) . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

4.5.4 LUBRICATION DIAGRAM (Telescopic arm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

4.5.5 LUBRICATION DIAGRAM (Offset device) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

4.6 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY . . . . . . . . . . . . . . . 173

4.6.1 CRITICAL PARTS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

4.7 MAINTENANCE PLAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

4.7.1 WHEN REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

4.7.1.a CHECKING, CLEANING OR CHANGING THE AIR CLEANER CARTRIDGE . . . 182

4.7.1.b CHECKING AND CLEANING THE CAB AIR FILTER . . . . . . . . . . . . . . . . . . . . . . 183

4.7.1.c CHECKING AND CLEANING THE RECIRCULATING AIR FILTER

(only for machines with air conditioner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

4.7.1.d BLEEDING THE BRAKING CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

4.7.1.e CLEANING THE WATER SEPARATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

4.7.1.f CHECKING AND ADJUSTING THE FRONT WHEEL TOE-IN . . . . . . . . . . . . . . 186

4.7.1.g CHECKING AND ADJUSTING THE PARKING BRAKE . . . . . . . . . . . . . . . . . . . . 187

4.7.1.h CHECKING THE BRAKING EFFICIENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

4.7.1.j CHECKING AND ADJUSTING THE BRAKE PEDAL STROKE . . . . . . . . . . . . . . 189

4.7.1.k ADJUSTING THE AUTOMATIC RETURN-TO-DIG DEVICE

OF THE FRONT BUCKET (if installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

4.7.1.l CHECKING AND ADJUSTING THE STABILIZER SLACK . . . . . . . . . . . . . . . . . . 190

4.7.2 MAINTENANCE INTERVALS IN CASE OF USE OF THE DEMOLITION HAMMER . . . . . . . 191

4.7.2.a CHANGING THE HYDRAULIC OIL FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

4.7.2.b CHANGING THE HYDRAULIC OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

4.7.3 CHECKS BEFORE STARTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

4.7.3.a VARIOUS CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

4.7.3.b CHECKING THE COOLANT LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

4.7.3.c CHECKING THE FUEL LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

4.7.3.d CHECKING THE ENGINE OIL LEVEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

4.7.3.e CHECKING THE HYDRAULIC CIRCUIT OIL LEVEL . . . . . . . . . . . . . . . . . . . . . . 194

4.7.3.f DRAINING THE WATER SEPARATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

4.7.4 MAINTENANCE EVERY 10 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

4.7.4.a LUBRICATING THE JOINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

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4.7.5 MAINTENANCE AFTER THE FIRST 50 HOURS OF OPERATION

(Only for machines in which the synthetic biodegradable oil type HEES is used) . . . . . . . . . 198

4.7.6 MAINTENANCE EVERY 50 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

4.7.6.a CHECKING THE RADIATOR FLUID LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

4.7.6.b CHECKING THE BRAKING SYSTEM OIL LEVEL . . . . . . . . . . . . . . . . . . . . . . . . 198

4.7.6.c LUBRICATING THE PROPELLER SHAFTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

4.7.6.d LUBRICATING THE FRONT AXLE JOINTS CENTRAL COUPLING . . . . . . . . . . 200

4.7.6.e CHECKING THE TYRE PRESSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

4.7.6.f CHECKING THE ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

4.7.7 MAINTENANCE AFTER THE FIRST 250 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . 202

4.7.8 MAINTENANCE EVERY 250 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

4.7.8.a ADJUSTING THE FAN BELT TENSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

4.7.8.b ADJUSTING THE A/C COMPRESSOR BELT TENSION

(Only for machines with air conditioner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

4.7.8.c CHECKING THE BATTERY ELECTROLYTE LEVEL . . . . . . . . . . . . . . . . . . . . . . 204

4.7.8.d CHECKING THE FRONT AXLE OIL LEVELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

4.7.8.e CHECKING THE REAR AXLE OIL LEVELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

4.7.8.f CHECKING THE HYDRAULIC TRANSMISSION OIL LEVEL . . . . . . . . . . . . . . . . 206

4.7.8.g CHECKING THE WHEEL NUT DRIVING TORQUE . . . . . . . . . . . . . . . . . . . . . . . 206

4.7.9 MAINTENANCE AFTER THE FIRST 500 HOURS OF OPERATION

(Only for machines in which the synthetic biodegradable oil type HEES is used) . . . . . . . . . 207

4.7.10 MAINTENANCE EVERY 500 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

4.7.10.a CHANGING THE ENGINE OIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

4.7.10.b CHANGING THE ENGINE OIL FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

4.7.10.c CHANGING THE HYDRAULIC SYSTEM OIL FILTER . . . . . . . . . . . . . . . . . . . . . 209

4.7.10.d CHANGING THE FUEL FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

4.7.10.e DRAINING THE FUEL TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

4.7.10.f DRAINING THE HYDRAULIC OIL TANK

(Only for machines in which the synthetic biodegradable oil type HEES is used) . 212

4.7.10.g CLEANING THE OUTSIDE OF THE RADIATORS . . . . . . . . . . . . . . . . . . . . . . . . 213

4.7.10.h CLEANING THE OUTSIDE OF THE A/C CONDENSER

(Only for machines with air conditioner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

4.7.11 MAINTENANCE EVERY 1000 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 215

4.7.11.a CHANGING THE FRONT AXLE OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

4.7.11.b CHANGING THE REAR AXLE OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

4.7.11.c CHANGING THE HYDRAULIC TRANSMISSION OIL . . . . . . . . . . . . . . . . . . . . . 217

4.7.11.d CHANGING THE HYDRAULIC TRANSMISSION FILTER . . . . . . . . . . . . . . . . . . 218

4.7.11.e CHECKING AND ADJUSTING THE ENGINE VALVE CLEARANCE . . . . . . . . . . 218

4.7.12 MAINTENANCE EVERY 2000 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

4.7.12.a CHANGING THE HYDRAULIC SYSTEM OIL AND CLEANING THE SUCTION

FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

4.7.12.b CHANGING THE COOLANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

4.7.12.c CHANGING THE BRAKING SYSTEM OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

4.7.12.d CHECKING THE ALTERNATOR AND THE STARTER. . . . . . . . . . . . . . . . . . . . . 225

4.7.12.e CHECKING THE QUANTITY OF COOLANT IN THE A/C SYSTEM

(Only for machines with air conditioner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

4.7.13 MAINTENANCE EVERY 4000 HOURS OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

4.7.13.a CHANGING THE A/C DEHYDRATING FILTER

(Only for machines with air conditioner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

4.7.13.a CHECKING THE OPERATING CONDITIONS OF THE A/C COMPRESSOR

(Only for machines with air conditioner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

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TECHNICAL SPECIFICATIONS

5.1 TECHNICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

5.1.1 STANDARD OVERALL DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

5.1.1.1 STANDARD OVERALL DIMENSIONS WITH CENTERED BACKHOE. . . . . . . . . 228

5.1.1.2 STANDARD OVERALL DIMENSIONS WITH FOLDED BACKHOE . . . . . . . . . . . 228

5.1.2 TECHNICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

5.1.2.1 TECHNICAL CHARACTERISTICS WB91R-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

5.1.2.2 TECHNICAL CHARACTERISTICS WB93R-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

5.1.3 LIFTING CAPACITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

5.1.3.1 SYMBOL TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

5.1.3.2 LIFTING CAPACITY WB91R-2 (STANDARD BOOM). . . . . . . . . . . . . . . . . . . . . . 232

5.1.3.3 LIFTING CAPACITY WB91R-2 (OFFSET BOOM). . . . . . . . . . . . . . . . . . . . . . . . . 233

5.1.3.4 LIFTING CAPACITY WB93R-2 (STANDARD BOOM) . . . . . . . . . . . . . . . . . . . . . 234

5.1.3.5 LIFTING CAPACITY WB93R-2 (OFFSET BOOM). . . . . . . . . . . . . . . . . . . . . . . . . 235

AUTHORIZED OPTIONAL EQUIPMENT

6.1 AUTHORIZED OPTIONAL EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

6.1.1 PRECAUTIONS REGARDING SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

6.1.2 CHARACTERISTICS OF THE OPTIONAL EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

6.1.2.1 CHARACTERISTICS OF THE OPTIONAL EQUIPMENT

FOR MODEL WB91R-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

6.1.2.2 CHARACTERISTICS OF THE OPTIONAL EQUIPMENT

FOR MODEL WB93R-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

6.2 FRONT EQUIPMENT QUICK COUPLING DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

6.2.1 MANUAL CONTROL QUICK COUPLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

6.2.2 HYDRAULIC CONTROL QUICK COUPLING FOR STANDARD BUCKET . . . . . . . . . . . . . . 242

6.2.3 HYDRAULIC CONTROL QUICK COUPLING FOR 4IN1 BUCKET AND OPTIONAL

EQUIPMENT WITH UNIDIRECTIONAL OIL FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

6.3 4in1 BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

6.3.1 DESCRIPTION AND CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

6.3.2 SAFETY DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

6.3.3 INSTALLING THE 4in1 BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

6.3.4 USING THE 4in1 BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

6.3.5 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

6.4 PALLET FORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

6.4.1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

6.4.2 SAFETY DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

6.4.3 USING THE FORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

6.4.3.1 PREPARING THE PALLET FORKS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . 247

6.4.3.2 OVERTURNING THE FORKS FOR TRAVEL ON ROADS . . . . . . . . . . . . . . . . . . 248

6.4.4 REMOVING THE FORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

6.4.5 INSTALLING THE FORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

6.4.6 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

6.5 BACKHOE TELESCOPIC ARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

6.5.1 DESCRIPTION AND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

6.5.1.1 VERSION WITH STANDARD CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

6.5.1.2 VERSION WITH SERVO CONTROLS (if installed) . . . . . . . . . . . . . . . . . . . . . . . 250

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6.5.2 SAFETY DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

6.5.3 USING THE TELESCOPIC ARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

6.5.4 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

6.5.4.1 ADJUSTING THE GUIDE SLACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

6.6 ARRANGEMENT FOR THE INSTALLATION OF THE DEMOLITION HAMMER. . . . . . . . . . . . . . . . 254

6.6.1 DESCRIPTION AND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

6.6.1.1 VERSION WITH STANDARD CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

6.6.1.2 VERSION WITH SERVO CONTROLS (if installed) . . . . . . . . . . . . . . . . . . . . . . . 254

6.6.2 USE OF THE DEMOLITION HAMMER AND RULES TO BE OBSERVED. . . . . . . . . . . . . . . 255

6.6.3 INSTALLING AND REMOVING THE DEMOLITION HAMMER . . . . . . . . . . . . . . . . . . . . . . . 259

6.6.3.1 INSTALLING THE HAMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

6.6.3.2 REMOVING THE HAMMER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

6.6.4 USING THE HAMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

6.6.5 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

6.7 APPLICATION OF THE OFFSET DEVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262

6.7.1 DESCRIPTION AND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262

6.7.1.1 VERSION WITH STANDARD CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262

6.7.1.2 VERSION WITH SERVO CONTROLS (if installed) . . . . . . . . . . . . . . . . . . . . . . . . 263

6.7.2 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

6.8 ARRANGEMENT FOR THE OPERATION OF OPTIONAL EQUIPMENT WITH UNIDIRECTIONAL

OIL FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

6.8.1 DESCRIPTION AND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

6.8.1.1 VERSION WITH STANDARD CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

6.8.1.2 VERSION WITH SERVO CONTROLS (if installed) . . . . . . . . . . . . . . . . . . . . . . . 264

6.8.2 INSTALLING AND CONNECTING THE EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

6.8.3 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

6.9 ARRANGEMENT FOR THE INSTALLATION OF THE CLAMSHELL BUCKET . . . . . . . . . . . . . . . . 266

6.9.1 DESCRIPTION AND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

6.9.1.1 VERSION WITH STANDARD CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

6.9.1.2 VERSION WITH SERVO CONTROLS (if installed) . . . . . . . . . . . . . . . . . . . . . . . . 267

6.9.2 INSTALLING THE CLAMSHELL BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

6.9.3 USING THE CLAMSHELL BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

6.9.4 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

6.10 ARRANGEMENT FOR THE INSTALLATION OF THE MANUAL HYDRAULIC HAMMER . . . . . . . . 270

6.10.1 DESCRIPTION AND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

6.10.2 CONNECTING AND REMOVING THE HAMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

6.10.2.1 CONNECTING THE HAMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

6.10.2.2 REMOVING THE CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

6.10.3 USING THE HAMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

6.10.4 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

6.11 LOAD STABILIZER SYSTEM (LSS) (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

6.11.1 ACCUMULATOR OF THE LOAD STABILIZER SYSTEM (LSS) . . . . . . . . . . . . . . . . . . . . . . 273

6.12 REAR EQUIPMENT RAPID COUPLING DEVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

6.12.1 EQUIPMENT COUPLING AND RELEASE PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

6.12.2 MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

SAFETY AND ACCIDENT PREVENTION

SAFETY, NOISE AND VIBRATION PLATES

2.1 SAFETY, NOISE AND VIBRATION PLATES

2.1.1 POSITION OF THE SAFETY PLATES

• The safety plates must always be legible and in good conditions; for this reason, if they are dirty with dust, oil or

grease, it is necessary to clean them with a solution made of water and detergent. Do not use fuel, petrol or solvents.

• If the plates are damaged, ask for new ones to Komatsu Utility or to your Komatsu Utility Dealer.

• In case of replacement of a component provided with a safety plate, make sure that this plate is applied also on

the new piece.

• The machine can be p rovided with other pla tes in addition to those indicated below; keep also to the instr uc-

tions given in the additional plates, in any case.

RWA30450

RWA00020

RWA00010

RWA00020

RWA30460

SAFETY, NOISE AND VIBRATION PLATES

RWA00030

RWA00020

RWA00150

RWA00190

RWA00020

RWA00160

RWA37700

SAFETY, NOISE AND VIBRATION PLATES

2.1.2 PICTOGRAMS AND RELEVANT MEANINGS

The warning and danger plates applied onto the machine are accompanied or represented by pictograms. The personnel in charge with the operation and maintenance of the machine must know the symbols contained in the pictograms perfectly; the following description illustrates what they look like and their respective meanings.

DANGER IN THE WORK AREA

• Do not approach or stand in the equ ipment operating radius

when the boom and the bucket are raised.

RWA00020

DO NOT OPEN THE HOOD

• Do not open or remove the hood when the engine is running.

FILLING THE HYDRAULIC SYSTEM WITH

OIL

(Only for machines in which the synthetic biod egr adable oil type HEES is used)

O VERTURNING THE FORKS

• When the forks are overturned for use or storage, be care-

ful to the grasping points, since hands and feet may be injured and even cut.

BIO-OIL

RWA00010

RWA34380

RWA35830

CONSULT THE MANUAL

• Carefully read the contents of the manual before using the ma-

chine or performing maintenance operations.

HYDRAULIC OIL TOPPING UP

SAFETY, NOISE AND VIBRATION PLATES

RWA00030

REFUELLING

ENGINE LUBRICATING OIL FILTER

FUEL FILTER

RWA00050

RWA00040

RWA00080

ENGINE AIR SUCTION FILTER

RWA00060

RWA00090

SAFETY, NOISE AND VIBRATION PLATES

ENGINE COOLANT

ENGINE COOLANT PRESSURE

HYDRAULIC OIL LEVEL

RWA00130

RWA00110

HYDRAULIC OIL FILTER

ELECTRIC OUTLET

TRANSMISSION OIL LEVEL

RWA00120

RWA00100

RWA00070

12 V

HYDRAULIC TRANSMISSION OIL FILTER

RWA00180

RWA00170

ANCHORAGE POINT

EMERGENCY EXIT

BOOM LOCK

SAFETY, NOISE AND VIBRATION PLATES

RWA00200

RWA00190

SWING LOCK

BRAKE OIL

DO NOT LIFT MORE THAN 1000 kg

RWA00160

RWA00150

RWA00140

> 1000 Kg

RWA00210

SAFETY, NOISE AND VIBRATION PLATES

2.1.3 POSITION OF THE NOISE PLATES ON MACHINES WITH CAB

(model WB91R-2)

• The noise plates must always be legible and in good conditions; for this reason, if they are dirty with dust, oil or

grease, it is necessary to clean them with a solution made of water and detergent. Do not use fuel, petrol or solvents.

• If the plates are damaged, ask for new ones to Komatsu Utility or to your Komatsu Utility Dealer.

• In case of replacement of a component provided with a noise plate, make sure that this plate is applied also on

the new piece.

ISO 6396

NOISE OUTSIDE THE CAB

• This value indicates the noise level outside the machine and

refers to the noise perceived by persons in the vicinity of th e work area.

NOISE INSIDE THE CAB

• This value indicates the maximum noise level perceived by the

operator’s ears inside the cab when this is completely closed.

2000/14/EC

RWA37710

RWA37720

ISO 6396

RWA37730

SAFETY, NOISE AND VIBRATION PLATES

2.1.4 POSITION OF THE NOISE PLA TES ON MACHINES WITH CAB (model WB93R-2)

• The noise plates must always be legible and in good conditions; for this reason, if they are dirty with dust, oil or

grease, it is necessary to clean them with a solution made of water and detergent. Do not use fuel, petrol or solvents.

• If the plates are damaged, ask for new ones to Komatsu Utility or to your Komatsu Utility Dealer.

• In case of replacement of a component provided with a noise plate, make sure that this plate is applied also on

the new piece.

ISO 6396

EXTERNAL NOISE

• This value indicates the noise level outside the machine and

refers to the noise perceived by persons in the vicinity of th e work area.

NOISE PERCEIVED BY THE OPERATOR

• This value indicates the maximum noise level perceived by the

operator’s ears.

2000/14/EC

RWA37710

RWA37720

ISO 6396

RWA37730

SAFETY, NOISE AND VIBRATION PLATES

2.1.5 VIBRATIONS TO WHICH THE OPERATOR IS SUBJECTED

• According to the res ults of the test s carried out t o determine the vibrations transmi tted to the operator by the

machine, the upper limbs are subjected to vibrations lower than 2.5 m/sq.sec., while the seated part of the body is subject to vibrations lower than 0.5 m/sq.sec.

GENERAL PRECAUTIONS

2.2 GENERAL PRECAUTIONS

2.2.1 GENERAL SAFETY RULES

• Only trained and authorized personnel can use the machine and perform maintenance operations.

• Follow all the safety rules, precautions and instructions when using the machine or performing maintenance op-

erations.

• When working with other op erators or w hen the wor k site is often occup ied by other op erators, make sure that

everyone knows and understands all t he signals described above and, in any cas e, that everyone works in such a way as to be able to see the machine and to be visible to the operator.

2.2.2 SAFETY DEVICES AND GUARDS

• Make sure that all the g uards and covers are in the correct posit ion. Have guards and covers chang ed or re-

paired if damaged. Neither use the machine without guards, nor rem ove the guards when the engine is running.

• Always use the proper safety devices to lock the machine when parking and fasten the safety belt.

• For the safety devices, see “3.1 SAFETY LOCKS”.

• For the safety belt, see “3.5.7 SAFETY BELT”.

• Do not remove the safety devices and always keep them in good operating conditions.

• Any improper use of the safety devices may result in serious injuries or even death.

2.2.3 CLOTHING AND PERSONAL PROTECTION ITEMS

• Do not wear large or loos e clothes, ri ngs and watches and d o

not approach the machi ne with lo ose long h air, since they can get entagled in the moving parts of the machine and cause serious injuries or damage. Avoid also wearing clothes dir ty with oi l or fuel, since they are flammable.

• Wear a hard hat, goggles, safety shoes, mask, gloves and

headphones when ope rating the m achine or pe rforming maintenance operations.

• Always wear safety goggles, a hard hat and heavy gloves if

your job involves scattering metal chips or minute materials; these precautions are particularly useful when driving the equipment connection pi ns with a hammer and when blowing compressed air into the air filter and the radiator to clean them. During these opera tions, make also sure that no one i s sta nding or working near the machine without the necessary protections.

• When working for 8 hours with a noise level exceeding 90

dBA, it is necessar y to use headphones or ear plugs and be particularly careful, especially at the end of the work shift.

RWA00960

GENERAL PRECAUTIONS

IMPORTANT

☞

2.2.4 UNAUTHORIZED MODIFICATIONS

• Any modification made without the authorization of Komatsu Utility can involve hazards.

• Before making a modification, consul t your Komatsu Utility Dealer. Komatsu Utility declines any respo nsibility

for injuries or damage caused by unauthorized modifications.

2.2.5 LEAVING THE OPERATOR’S SEAT

• When leaving the operator’s seat, even if temporarily, make

sure that t h e m ac h ine is in a safe positio n. (See “2.4.11 PARKING THE MACHINE”).

• Before leaving the operator’s seat, carry out the following oper-

ations in the sequence indicated below: 1 - Rest the equipment onto the ground. 2 - Connect the safety devices of the controls. 3 - Apply the parking brake. 4 - Shift the reversing gear lever to the neutral position. 5 - Stop the engine.

RWA25630

• If the machine is equipped with backhoe servo controls,

before leaving the operator seat always engage the control locking safety device by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27.

If you have to go so far away that you will not be able to see the machine, extract the ignition key.

RWA34810

RWA34880

GENERAL PRECAUTIONS

2.2.6 GETTING ON AND OFF THE MACHINE

• Do not jump on or off the machine, either when it is at rest and

when it is moving.

• When getting on or off the ma chine, always use the handles

and the safety ladders; get on and off t he machine very carefully.

• Never hold or rest on the steering wheel or the gearshift lever.

• Either when getting on and when get ting off the machine, al-

ways maintain three points of contact (holding or resting points), in order to avoid losing your balance and falling down.

• Tighten the handle and ladder connect ion screws if they are

loose and clean the handl es and steps if they are dirty with oil or grease. Carefully clean the cab floor if it is dirty with oil, grease, mud or rubble.

The cab

RWA04690

Safety canopy

2.2.7 CHECKING THE REAR-VIEW MIRRORS

• Make sure that the rear-view mirrors are clean and correcly

positioned; they must allow the opera tor to see the rear of th e machine with no need to move the chest with respect to the normal work position.

• If the rear-view mirrors should move or break during work, stop

the machine immediately and fasten or change them.

• Working without checking the back of the machi ne is danger-

ous, since the machine may hit persons who are in cautiously standing in the wor k area, fixed obstacl es or manoeu vring vehicles.

2.2.8 PREVENTING FIRES DUE TO FUEL AND OIL

Fuel, oil and some types of antifreeze can be easily ignited if they get in contact with a flame. Fuel is par ticularly flammable and therefore extremely hazardous.

• Keep any naked flame away from flammable fluids.

RWA04790

RWA00340

• Stop the engine and do not smoke when refuelling.

• Top up with fu el and oil only after stopping the engine and in

well ventilated areas.

• Top up wi th fuel an d oil in a well deli mited area a nd do not al-

low unauthorized persons to approach.

RWA00970

GENERAL PRECAUTIONS

• When refuelling, hold the fuel gun firmly and keep it constantly

in contact with the filler until you have finished, in order to avoid sparks due to static electricity.

• After topping up, tighten the fuel and oil safety caps securely.

• Do not fill the tank completely, in order to leave room for the fu-

el to expand.

• In case some fuel is spilled, wipe it up immediately.

2.2.9 PREVENTING BURNS

• If the engine coolant, the engi ne oil and the hydraulic oil are

hot, use heavy cloths and wear gloves, heavy clothing and safety goggles before carryi ng out any check or touching the hot parts.

RWA00980

• Before checking the coolant level, stop the en gine and let the

fluid cool down. If a check is necessary du e to the overheating of the engine, slowly loosen the radia tor plug to release any residual pressure before removing it. The hot fluid that spurts out may cause serious burns.

• Before checking the engine oil and hydraulic circuit oil level,

stop the engine and l et the oil cool down. The hot oil that can be sprayed out of the tank may cause serious burns.

2.2.10 PREVENTING DAMAGE DUE TO ASBESTOS POWDER

• Asbestos powder can be hazardous to your health if it is in-

haled.

• If you handle materials contai ning asbes tos fib ers, keep to the

instructions given below: 1 - Do not use compressed air, but only aspirators to clean

the machine and make sure that the r oo m in which you are working is properly ventilated.

2 - Use low-pressure water to keep down the dust when clean-

ing.

3 - If there is danger that there may be asbestos powder in the

air, operate the machine with the wind to your back whenever possible.

4 - Even if the cab provides suitable protection, use an ap-

proved and homologated respirator.

5 - The powder gathered during the cleaning operations must

be dampened and put in a sealed and marked container, so that it can be safely disposed of according to the regulations in force.

RWA00990

RWA01000

RWA01010

2.2.11 PREVENTING D AMAGE CA USED BY THE WORK EQUIPMENT

• Do not stand within or approach the operating radius of the

work equipment, even when the operator is on board th e machine and the engine is running.

• Do not stand or work unde r the arms or the articul ati ons whe n

the arms are lifted, if you are not sure that the safety locks have been duly engaged.

• Do not carry out any operation requiring the lifting of the arms,

if you are not sure that the locks are correctly positioned and coupled to the arms.

2.2.12 FIRE EXTINGUISHERS AND FIRST AID KIT

• Make sure that fire extinguishers have been provided and

check their position.

GENERAL PRECAUTIONS

RWA01020

• Periodically make sure that th e fire extinguishers are loaded

and that you know how to use them.

• Find out where the first aid kit has been located.

• Periodically make sure that the first aid kit conta ins the neces-

sary disinfectants, bandages, medicins, etc.

• It is necessary to know what to do in case of fire.

• Make sure that you have the phone numbers of the persons or

structures you may need to contac t in case of an emergency at hand (either at the work site and where maintenance operations are performed).

RWA01030

2.2.13 PRECA U TIONS CONCERNING THE CAB STRUCTURE

• If the cab is inadvertently hit or the machine overturns during work, the cab may be damaged with cons eq uen t

reduction of its stiffness and of the safety that must be guaranteed to the operator (Rops/Fops homologation). Contact Komatsu Utility or an Authorized Komatsu Utility Dealer to have the cab structure and resistance checked in case of impact or damage.

2.2.14 PRECAUTIONS CONCERNING THE EQUIPMENT

• When installing and using optional equipment, carefully read the relevant instruction manual and keep to the in-

dications given therein.

• Do not use optional o r special equipment without the authorization of Komatsu Utility or th e Komatsu Utility

Dealer. The installation and us e of unauthori zed equipment may create safety problems and ad versely affect the efficiency and life of the machine.

• Komatsu Utility cannot be held li able for any injury, accident, product failure resulting fr om the installa tion and

use of unauthorized equipment.

PRECAUTIONS TO BE TAKEN BEFORE STARTING THE ENGINE

2.3 PRECAUTIONS TO BE TAKEN BEFORE STARTING THE ENGINE

2.3.1 SAFETY ON THE WORK SITE

• Before starting the engine, thoroughly check the area for any

unusual condition of the ground due to which work may be dangerous.

• Check the conditions of the ground at the work site an d before

starting the engine defin e the work pl an and the best and s afest operating procedure.

• Make the ground surface as level as possible before carr ying

out any operation.

• In case of work on the road, protect pedestr ians and cars by

designating a person for work s ite traffic duty and install fences around the work site.

• If water lines, gas lines, and telephone or high-voltage electr i-

cal lines are locate d under the work si te, contact the relevant utility company in order to find out their exact positions or to make them inneffective until the end of the operations. Be careful not to sever or damage any of these lines.

RWA00220

• Check the depth and flow of water before operating in water or

on river banks.

2.3.2 FIRE PREVENTION

• Completely remove all wood chips, r ubbish, paper and other

flammable materials that may hav e accumulated inside the engine compartment, since they can cause fires.

• Check the fuel and hydraulic system pipes for leaks and if nec-

essary repa ir them. Wipe up any excess oil, fuel or other flammable fluids.

• Make sure that fire extinguish ers are available in the work a r-

ea.

RWA01040

2.3.3 PRECAUTIONS TO BE TAKEN FOR THE OPERATOR’S CAB

• Do not leave objects or tools lying a round in the operator ’s cab. They may hinder the operation of the brakes

and cause serious accidents.

• Keep the cab floor and the controls (steer in g wheel and levers) clean, by removing a ny trace of oil an d grease

and, as far as the floor is concerned, remove any excess dirt (earth, stones, etc.).

• Check the safety belt and change it if it is broken or damaged. Replace any component only wi th h omo log ated

parts available at Komatsu Utility or its Dealers.

• Make always sure that the lock of the right door, which is considered the emergency door, is open.

PRECAUTIONS TO BE TAKEN BEFORE STARTING THE ENGINE

2.3.4 ROOM VENTILATION

• Before starting the machine in confined or poorly ventilated

places, provide for proper ventilation or connect the engine exhaust pipe to a suction duct. The engine exhaust gases can be deadly.

RWA01050

2.3.5 CLEANING WINDOWS, MIRRORS AND LIGHTS - CHECKING THE WINDSHIELD WIPER BLADES AND THE BULBS

• Remove any trace of dirt from the cab windows, lights and rear-view mirrors, in order to ensure perfect visibility.

• Adjust the rear-vi ew mirrors if they have moved, so that the opera tor sitting in t he driving position can c learly

see the back of the machine. If any window, light or mirror is damaged, change it.

• Make sure that the road lights, stoplights, direction indicators and working lights are properly working. If neces-

sary, change the faulty bulbs with new ones, making sure that their power is correct.

• Check the conditions of the windshield wipe r blades; the scraping wire must be smooth, with no indent ations

and attached to the rubber back of the blade. In case of doubts on the efficiency of the scraping wire, change the blades.

PRECAUTIONS TO BE TAKEN WHEN WORKING

IMPORTANT

☞

IMPORTANT

☞

2.4 PRECAUTIONS TO BE TAKEN WHEN WORKING

2.4.1 STARTING THE ENGINE

• Before getting on the machine, walk around it and check for people and objects that might be in the way.

• Do not start the engine if warning plates have been attached to the steering wheel or the control levers.

• When starting the engine, sound the horn as an alert signal.

• Start the engine and operate the machine only while seated with fastened safety belt.

• Do not allow anyone to get on the machine or enter the cab.

2.4.2 RULES FOR ROAD TRAVEL

• The machine is equipp ed with multifunction safety locks that must b e used both for maintenance ope rations

and road travel.

• When it is necessary to travel on roads, proceed as follows:

1 - Position the safety lock of the front loader, so that the bucket is raised from the ground, thus ensuring better

visibility and the stability of the machine. 2 - Install the front bucket antirotation lock and secure it with the safety pins. 3 - Install the teeth protection casing on the front bucket. 4 - Raise the backhoe boom until engaging the safety coupling. The arm and bucket must in any case be com-

pletely folded. 5 - The backhoe must be rotated and resting on the str ucture. This is the onl y position homologat ed for road

travel in Italy. 6 - For travelling with folded backhoe, the unit must be moved on its guide in such a way as to be positioned to-

wards the road center, against the lock and with the bucket facing the road side. 7 - Fasten the backhoe with the antirotation pin. 8 - Connect the safety chains to prevent the accidental lowering of the stabilizers. 9 - Engage the loader and backhoe contro l lever safety locks. For further informati on on thei r po siti on, s ee “3.1

SAFETY LOCKS”.

• If the machine is equipped with backhoe servo controls, before travelling on roads always engage the

control locking safety device by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27.

• When it is necessary to travel on roads, the four-wheel drive must be disengaged and the brake pedals must be

connected with the appropriate pin.

• When travelling on roads, keep to the rule of the road and operate the flashing light posi tioned on top of the

cab.

• When travelling on roads, keep the working lights off.

• In any case, keep to the traffic rules in force.

2.4.3 CHECKS FOR TRAVELLING IN REVERSE

• When operating in ar eas that m ay be hazardous or have poor

visibility, designate a person to direct the movements of the machine and traffic on the work site.

• Before moving the machine, sound t he horn to warn the per-

sons standing or working in the area.

• There are blind spots behind the machine, which cannot be

seen through the rear -view mirrors and where someon e may be standing. It is necessar y to make sure that there is no one behind th e machine before travelling in reverse. On request the machine may be equipped with an acoustic alarm (1) to be used in case of reversal. If the machine is equipped with this acoustic alarm (1), before any reversal make sure that it functions correctly. See “3.3.6 pos. 1 REVE RSING GEAR LEVER” to check the functionality of the alarm.

PRECAUTIONS TO BE TAKEN WHEN WORKING

RWA00340

2.4.4 MOVING THE MACHINE

• When moving the machine, position the front bucket at about

30÷40 cm from the ground; this pos ition makes it possible to evaluate the space required for the movements more precisely and at the same time ensures the stability of the machine.

• If the front bucket control lever is to be used during travel,

avoid moving it abruptly; sudden mano euvres cha nge the a ttitude of the machine and make driving difficult.

• When travelling on rough ground, keep the speed low and

avoid sudden movements of the bucket arm.

• If the machine has to travel over an obstacle, keep the front

equipment as close to the ground as possible and travel at low speed, in order not to strain the axles and tyres.

RWAB0630

RWA00350

30÷40 cm

PRECAUTIONS TO BE TAKEN WHEN WORKING

2.4.5 WORKING ON SLOPES

• Operations on slopes and on river or lake banks with damp

ground may result in the tipping over or slipping of th e machine.

• Do not work with the bucket downward with respect to the trac-

tor.

• On hills, banks or slopes, keep the bucket very close to the

ground (20÷30 cm from the ground) and in case of emergency quickly lower it to the ground to help the machine stop.

• Do not change direction and avoid travelling obliquely when

working on slopes. It is advis able to go down or up to a flat place to perform these operations.

• Do not travel on wet grass or thick layers of leaves: if the ma-

chine moves obliquely in these conditions, it may slipi.

• Before working on a s lope, always check the efficienc y of the

brakes, engage a low gear and the four-wheel drive.

• Do not travel down slopes in neutral; you may lose control of

the machine and cause serious injuries and even death.

• Avoid disengaging the gearshift with the push button posi-

tioned on the loader control lever.

• When travelling down a slope, engage a low gear, so that the

braking action of the engine is us ed to hold the machi ne, with no need to strain the brakes.

RWA00360

20÷30 cm

WRONG

RWA02240

• When the fuel level indicator reaches the red reserve area dur-

ing work on a slope, immediately provide for refuelling; due to the inclination of the ma chine, the engi ne may suck in air and suddenly stop, which repr esents a grave risk for the safety of the operator and of the persons before the machine.

• If the engine should s top all of a sudden, immediately lower

the bucket to the ground, brake and apply the parking brake.

CORRECT

RWA02350

2.4.6 PREVENTING ELECTROCUTION

• Digging operations near overhead electric lines are extremely

dangerous and they may also caus e death due to electrocution; for this reason, when working near overhead electrical lines always respect the minimum safety distanc es presc ribed by the competent authorities and by the accident-prevention rules in force.

• As far as underground long-distanc e lines are concer ned, the

minimum distance depends on the covering of the ducts in which the cables are laid.

• The basic safety precautions to b e taken to prevent this risk

are the following: 1 - Wear shoes with thick rubber or leather soles. 2 - Request the ai d of anothe r person who can war n you if the

machine gets too close to the electric line. 3 - Operate at low speed. 4 - Learn what is to be done first in case of electrocution. 5 - Keep the phone number of the electr icity company and of

the nearest first aid station at hand.

• If the work equipme nt gets accidentally entangled in th e ca-

bles, the operator must not leave the cab until the electricity company has insulated the line.

PRECAUTIONS TO BE TAKEN WHEN WORKING

RWA04900

• When carrying out this kind of operations, warn everyone

standing in the work area to keep at the minimum distance prescribed from the machine and the work equipment.

• Ask the electrici ty com pany what ar e the voltage of th e cables

and the minimum safety distance in advance.

DANGER

• The minimum distances from overhead lines can vary in the different countries, according to the cli-

mate and to the humidity percentage in the air. Indicatively, the distances indicated in the table should be respected.

Cable volt ag e Min. safety

distance

1.0 kV (distribution line) 5 m

6.6 kV (2÷3 insulators) 5.2 m 33 kV (min. 3 insulators) 5.5 m 66 kV (min. 6 insulators) 6 m

154 kV (min. 10 insulators) 8 m 275 kV (min. 19 insulators) 10 m

PRECAUTIONS TO BE TAKEN WHEN WORKING

2.4.7 VISIBILITY

• Switch on the road or working lights as soon as visibility decreases.

• If visibility decreas es due to mist, smoke or heavy rain, s top the machine in a safe position and wait for the

weather to improve until visibility becomes acceptableità.

2.4.8 WORKING ON ICY OR SNOW-COVERED SURFACES

• If the ground is icy or c overed with snow, the response of the m achin e to the movements of the steering wheel

may not be precise. To limit the risks deriving from reduced directionality, proceed as follows:

1 - Engage the four-wheel drive. 2 - Travel using the accelerator smoothly and gradually. 3 - Brake smoothly and only after having slowed down by using the engine deceleration as much as possible. 4 - Avoid any sudden braking, rapid acceleration and abrupt steering with reduced steering radius.

• If the machine is used to clear snow or as snowplough on roads (installing the specific optional equipment and

even chains, if necessary), be careful to the road shoulders and to any object/obstacle buried in the snow (wayside posts, milestones, signs just above the asphalt, etc.).

2.4.9 PREVENTING DAMAGE CAUSED BY THE WORK EQUIPMENT

• When working in tunnels, gall erie s, under ele ctri c cables or other duc ts (air, telephone lines) and wher ever the

height is limited, proceed with the greates t care to prevent the bucket or arms and th e backhoe bucket from causing any damage.

2.4.10 WORKING ON LOOSE GROUND

• Avoid operating the machine too close to the edge of cliffs, overhangs and deep ditches.

These areas may collapse, mak ing th e machi ne fall down or tip over and this could resu lt in ser io us in jur ies or death. Remember that after heavy rain or earthquakes these dangerous conditions usually get worse.

• The earth laid near ditches is loose and can easily collapse due to the weight or vibrations of the machine.

Be extremely careful: always close the cab doors and fasten the safety belt.

PRECAUTIONS TO BE TAKEN WHEN WORKING

IMPORTANT

☞

2.4.11 PARKING THE MACHINE

• Park the machine on firm and level ground. If this is not poss i-

ble and it is necessar y to park on a slope, position the machine with the front bucket directed downwards and carry out the following operations:

1 - While keeping the machine stoppe d with the brakes, apply

the parking brake.

2 - Dump the front bucket to the unloadi ng position and lower

the arms until the teeth are driven into the ground. 3 - Carry out the same operations with the backhoe bucket. 4 - Stop the engine. 5 - Put wedges or safety blocks under the front and rear

wheels.

• Always rest the work equipment on th e ground; if it is neces-

sary to par k with ra ised ar ms, make sure that the s afety locks are engaged.

• Always engage the control lever safety locks.

• If the machine is equipped with backhoe servo controls,

always engage the control locking safety device by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27.

RWA00370

RWA00380

• When leaving the machine, apply the parking brake, make

sure that the cab windows ar e closed, rem ove the ignition key and finally lock the doors.

• If it is necessar y to par k on public roads, pr ovide for signall ing

the presence of the machine according to the local regulations in force (signalling fires, fences, road works ahead, alt ernate d direction and direction signs, etc.) .

RWA25630

RWA34880

RWA34810

TRANSPORTING THE MACHINE ON MOTOR VEHICLES

2.5 TRANSPORTING THE MACHINE ON MOTOR VEHICLES

2.5.1 LOADING AND UNLOADING

• Loading and unloadi ng the machine on/from a motor vehicle

always involves potential hazards. Proceed with extreme care.

• Perform loading and unloading on firm, level ground. Maintain

a safety distance from the edges of ditches or from road sides.

• If the vehicles used have not been appositely equipped, put

support blocks under the ramps, in order to avoid any bending.

Ramps

• Always lock the wheels of the transpor ting vehicle with wedg-

es.

• Always use ramps that are sufficiently wide and can s upport

the weight of the machine. The lon gitudinal axes of the ramps must be parallel to each other and perpendicular to the loading side board and their di stance mus t be suitable for the tread of the machine.

• Make sure that the ramps are securely positioned and fas-

tened to the loading board and that they ha v e the same length.

• Position the ramps with a maximum inclination of 15°.

• Make sure that the ramp surface is clean an d th er e is no trace

of grease, oil, soil and ice; remove dir t fr om the wheel s before starting to load the machine on the vehicle.

• The machine must be loaded on the vehicle with the bucket di-

rected forwards, that is, in the dire ction o f ad vancement of th e vehicle.

• Do not correct the trajector y of the machine on the ramps. If

necessary, get down the ramps and start the operation again.

• After loading the machi ne, block its wheels with wedges and

secure it with tie-downs or chains that p revent even any sideward shift (see “3.9 TRANSPORTING THE MACHINE ON MOTOR VEHICLES”).

Max.15˚

Blocks

RWA00240

2.5.2 TRANSPORT

CAUTION

• During transport, the machine must be secured to the vehicle with closed doors and windows.

• Define the route to be followed, taking in consideration the width, height and weight of the transport means and

of the machine. Make sure that the dimensions o f the machine are compa tible with the road and any galler y, subway, bridg e, electric and telephone lines, etc.

• Keep to the regulations in force regarding the permis sible width, height, weight of the machi ne and the trans-

port speed .

2.6 BATTERY

2.6.1 PREVENTING RISKS THAT MAY BE DUE TO THE BATTERY

• Electrolytic batteries contain sulphuric acid that can quickly

burn the skin and corrode clothes making holes in the fabric. If you spill acid on yourself, immediately ri nse the involved area with plenty of water.

• Battery acid may cause blindness if splashed into the eyes.

If acid gets accidentally into your eyes, flush them immediately with plenty of water and consult a doctor without delay.

• If you accidentally swallow some acid, drink a large quant ity of

water or milk, beaten egg white or vegetable oil and in any case antiacid substances like magnesia, bicarbonate, etc.;. call a doctor or a poisoning prevention center immediately.

• When handling batteries, always wear safety goggles.

• Batteries generate hydrogen. Hydrogen is highly explosive

and can be easily ignited with small sparks or naked flames.

• Before working with batter ie s, sto p th e e ngi ne a nd remove the

ignition key.

BATTERY

RWA01060

WRONG

• Avoid short-circuiting the batter y term inals through accidenta l

contact with metal objects or tools or through the inversion of the terminals.

• Tighten the battery terminals securely. Loose terminals may

generate sparks and even cause the explosion of the battery.

2.6.2 STARTING WITH BOOSTER CABLES

• When starting the machine with booster cables, always wear

safety goggles.

• When star tin g the en gin e by means of ano ther machi ne, avoid

any contact between the two machines.

• Be sure to connect the positive cable (+) first and then the neg-

ative or earth cable (-) when connecting the booster cables. Disconnect first t he negative or earth (–) cable and then the positive cable (+) after the start.

• Connect the batteries in parallel: positive to positive and nega-

tive to negative.

• When connecting the ea r th cable to the frame of the machin e

to be started, operate as far as possible from the battery. (See "3.15.3 IF THE BATTERY IS DOWN").

RWA01080

RWA01180

RWA01190

• Do not attempt to star t the engine by causing a short-circuit

with the termina ls of the star ter ( see “2.8.14 PRECAUTIONS REGARDING THE STARTER”).

PRECAUTIONS FOR THE REMOVAL

2.7 PRECAUTIONS FOR THE REMOVAL

• The draw hooks must be used only for the first ai d and not for

towing the machine.

• Before moving the machine, make sure that the gea r shift l ever

is in neutral and disengage the four-wheel drive.

• Incorrect manoeuvres may result in serious injuries or even

death.

• To move the machine, use prop erly dim ensioned steel cables;

do not use worn cables or cables with broken strands (A), twisted cables (B), deformed cables (C).

• During the removal, no one can be allowed to get near the ma-

chines or the cable.

• Do not get astride the cable.

• Remove the machine only as much as necessary to permit the

required repairs.

• Do not remove the machine in any way other than that indicat-

ed in paragraph “3.15.1 HOW TO REMOVE THE MACHINE”.

RWA01920

CAUTION

• The maximum applicable force for each draw hook is

F = 6200 kg.

• Use cables having the same length and draw continuosly

and constantly, without jerks.

• The drawing force must be parallel to the machine axis

(advancement direction), in such a way as to avoid the application of sideward forces on the draw hooks.

RWA01930

RWA05380

2.8 PRECAUTIONS FOR MAINTENANCE

2.8.1 WARNING PLATES

• Before starting any maintenance operation, position the ma-

chine on firm an d level ground, engage the safety locks of the equipment and of the contr ols, stop the engine and apply th e parking brake.

• If another person starts th e engine and operates the controls

while the operator is p roviding for ser vice, this may result in serious injuries or even death.

• To avoid these risks, alwa ys attach warning plates to the steer-

ing wheel, to the control levers and to the ignition key before performing any maintenance operation; if necessary, attach additional warning tags also around the machine and in particular on the cab door handles.

2.8.2 TOOLS

• Use only the tools provided with the machi ne and hi gh-quality

tools suitable for the tasks to be performed.

PRECAUTIONS FOR MAINTENANCE

DO NOT

START

ENGINE

RWA01210

• Do not use worn, da maged, low-quality tools or tools that are

not suitable for the tasks to be performed, in order to avoid any personal injuryti.

• After use, always clean the tools carefully an d put them i n the

appropriate compartment positioned inside the seat support. After use, carefully clean th e tools and put them in the compartment obtained inside the seat support. If the operator plans to keep on the machine som e tools whose dimensions exceed those of the compar tment positioned under t he seat, he can store them in an appropr i ate tool box positioned on the rear outer part of the cab. See “3.5.11 ADDITIONAL TOOL BOX (if provided).”

RWA01310

RWA02860

2.8.3 PERSONNEL

• Any maintenance opera tion must be carr ied out exclusively by author ized and duly trained per sonnel; s pecific

and personal prote ction me asur es must be ad opted w hen gr inding , weld ing an d when usin g sle dges or h eavy hammers.

• When assemblying the equ ipment or cylinder connection pins, us e wooden, plastic or in any case not exces-

sively hard tools to check the centering of the holes. Do not use your fingers, since you run the risk of cutting them.

PRECAUTIONS FOR MAINTENANCE

2.8.4 EQUIPMENT

• The normal or spec ia l equipment that must be instal le d o n th e

machine or that have been removed must be stored in safe places, preventing them from falling down. If they fall on someone, they can cause serious bodily harm.

• When assemblying or removing any equipment, make sure

that the ropes and the lifting h ook are in goo d conditions and properly dimensioned for the load to be lifted.

2.8.5 WORKING UNDER THE MACHINE

• Always lower the work equipment to the ground or in a ny cas e

to their lowest position before performing service or repairs under the machine.

• Always lock the machine tyres securel y.

• Do not work under the mac hine, if this is not sufficiently s up-

ported.

RWA01320

2.8.6 CLEANING THE MACHINE

• Spilled oil or grease, scattered tools or broken pieces are dan-

gerous, because they may cause someone to slip or t rip. Always keep the machine and the work site clean and tidy.

• To clean th e machine, use a pressurized jet of warm water or

steam and the appropriate detergents available on the market. Do not use gas oil, oil or solvents, since the former leave an oily coat that favours the sticking of dust, whi le the la tter (even if weak) damage the painted sur faces and therefore facilitate rusting.

• While cleaning the machine, keep the pressurized jet at a min-

imum distance of approx. 60 cm in order not to dam age the warning plates and the pictograms. If the plates are damaged, request Komlatsu Utility or your Komlatsu Utility Dealer to sen d you spare plates and chang e them.

• Water into the electric al system provokes the oxidation of the

contacts and may hinder the start of the machine or even make it start suddenly and abruptly. For this reason, never use water or steam jets to cl ean sensor s, connecto rs or the ins ide of the operator’s cab.

RWA02520

RWA01330

PRECAUTIONS FOR MAINTENANCE

IMPORTANT

☞

2.8.7 USE OF THE ENGINE DURING MAINTENANCE OPERATIONS

• During maintenanc e operations, let the engine run onl y when it is absolutely necessar y. If the engine must be

running (for example, when checking the functionality of the alter nator), it is advisable that someo ne remains seated in the driving position, so that the engine can be stopped whenever necessary.

• During maintenance operations with running engine, never move the control locking devices from the “lock” po-

sition or change the position of the gearshift lever. Service personnel must not move any control lever.

• If the machine is equipped with backhoe servo controls, always engage the control locking safety de-

vice by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27.

• When carryin g out maintena nce operations, do no t touch the moving pa r ts of the mac hine and avoid wearing

large and loose clothes.

2.8.8 PERIODICAL CHANGE OF THE PARTS THAT ARE CRITICAL FOR SAFETY

• Periodically change the following components, which are important for safety and fire prevention:

Fuel supply system: fuel delivery and return pipes. Hydraulic system: main delivery pipes of the hydraulic pump. Hydraulic system: work circuit pipes from the distributor to the hydraulic cylinders. Safety belt

• Even if they seem to be in good conditions, these components must be periodically changed with new ones.

In fact, these components tend to deteriorate over time.

• If one of these parts is defective, change or repair it even if the change interval has not elapsed yet. (See “4.6

PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY).

PRECAUTIONS FOR MAINTENANCE

IMPORTANT

☞

2.8.9 STOP THE ENGINE BEFORE CARRYING OUT ANY MAINTENANCE OPERATION OR INSPECTION

• Stop the machine only o n firm and level ground and stop the

engine before carryi ng out any maintenance operation or inspection.

• If it is necessary to have the engine running during mainte-

nance, engage the safety LOCKS of the equipment c ontrol levers, apply the parking brake and carr y out any maintenance operation with the help of another person; an operator must remain on board and the words to be used dur ing the operation must be agreed upon.

• If the machine is equipped with backhoe servo controls,

always engage the control locking safety device by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27.

RWA02000

• The person who carr ies out the maintenance operation must

be very careful not to touch any moving part of the engine.

RWA25630

RWA34810

RWA34880

2.8.10 RULES TO BE FOLLOWED DURING FUEL OR OIL TOPPING UP

• Spilled fuel or oil make the ground slippery and may cause ac-

cidents; clean any dirty area immediately and carefully.

• Always tighten the fuel tank and hydraulic circuit oil safety

caps securely.

• Do not use fuel to clean any part of the machine that m ay be

dirty with oil or dust.

PRECAUTIONS FOR MAINTENANCE

• Always top up the fuel and oil tanks in properly ventilated place

and avoid smoking.

• When refuelling, hold the fuel gun firmly and keep it constantly

in contact with the filler until you have finished, in order to avoid sparks due to static electricity.

• Do not fill the tank completely, in order to leave room for the fu-

el to expand.

2.8.11 CHECKING THE COOLANT LEVEL IN THE RADIATOR

• Let the engine and the radiator cool down, before checking the

coolant level in the radiator.

RWA00970

RWA00980

• If it is necessary to r emove the cap with hot engine, wear suit-

able clothes and prot ections and loo sen the cap s lowly, in order to gradually release the pressure.

2.8.12 USING LAMPS

• When checking the fuel , oil, coolant o r batter y electrolyte l ev-

els, always use homologated explosion-proof lamps. If such lighting equipment is not used, there is danger of fire or explosion.

RWA01340

RWA01350

PRECAUTIONS FOR MAINTENANCE

IMPORTANT

☞

2.8.13 PRECAUTIONS CONCERNING THE BATTERY AND THE ALTERNATOR

• When repairing the electrical system , disconnet the batte ry in

order to stop the flow of current.

• Disconnect first the negative earth cable (-) and then the

positive cable (+). At the end of the operation, reconnect first the pos itive cable (+) and then the negative cable (-).

• If electrical welding operations are to be carried out on the ma-

chine, it is necessary to disconnect the battery and also the alternator.

REMOVAL

RWA01370

2.8.14 PRECAUTIONS CONCERNING THE STARTER

• Start the engine only when correctly seated in the driving posi-

tion.

• Do not attempt to star t the engine by causing a short-circuit

with the terminal s of the starter. This may cause fires, serious injuries and even death in cas e o f s udd en o r ac ci den tal movements of the machine.

RWAA0040

RWA04890

RWAA0850

PRECAUTIONS FOR MAINTENANCE

2.8.15 HANDLING HIGH-PRESSURE PIPES

• Do not bend high-pressure pipes or rub them with abrasive or cutting objects.

Do not use any bent or cracked pipes or ho se s that were previously rejected because of l eak s or fastening defects, since they may burst during use.

• Always repair or replace any loose or faulty fuel or oil pipe. Any leakage of fuel or oil may cause fires.

2.8.16 PRECAUTIONS T O BE TAKEN WHEN HANDLING HIGH-PRESSURE OIL

• Do not forget that the work equipment circu its are always un-

der pressure; for this reas on, when it is necessar y to add or drain hydraulic oil or to perform maintenanc e operations or inspections on the hydraulic circuit, it is advisable to lower the equipment to the ground and completely release the pressures and the residual pressure present in the tank. Small leakages from pipes under pressure and the resulting jets are extremely dangerous, since they can perforate the skin and penetrate in the blood circulation or injure the eyes. For this reason, always wear goggles and thick gloves durin g the inspections and use a piece of cardboard or a sheet of plywood to check for oil leakages. If you are hit by a jet of high-pressur e o il or ar e inj ur ed, even if slightly, immediately consult a docto r.

DANGEROUS!

RWA01480

CORRECT

RWA01580

2.8.17 PRECAUTIONS FOR MAINTENANCE OPERATIONS AT HIGH TEMPERATURES AND HIGH PRESSURE

• When the machine is stopped at the end of operations, the en-

gine coolant, the oil an d all the components are hot and the hydralic circuits are under pressure. In these conditions, if the coolant, the hydraulic oil and the engine oil are to be drained in order to change them or the filters, there are serious risks of damage and burns. Wait for the temperature to lower within the nor mal operating range (40÷45) before carrying out the maintenance operations in accordance with the procedures indicated in the relevant sections of this manual.

RWA00990

PRECAUTIONS FOR MAINTENANCE

2.8.18 COOLING FAN AND BELT

• Be careful to the revolving par ts and do not allow anyone to

get too close to these par t s, since cloth es or pa rts of the body may get caught into them.

• If hands, clothes, or tools touch the fan blades or the belt, they

may be cut, torn or s eriously dama ged; for this reason, avoid touching the revolving parts.

2.8.19 WASTE MATERIALS

• Do not dispose of used oil in the sewer system, rivers, etc.

• Always put used oil in containers. Never drain the oil directly

onto the ground.

RWA01660

• Keep to the laws and regulation s in force when disposing of

harmful su bstanc es s uch as oil, fuel, solvents, used filters and batteries.

2.8.20 PRECA UTIONS TO BE T AKEN WHEN INFLATING TYRES

• When being inflated, the tyres may explode and come off, thus

causing serious accidents.

• Before inflating the tyres, always check the conditions of the

rims and the outer condi tions of the tyres themselves, in order make sure that there are no dents, cuts, torn plies or ot her defects.

• It is advisable to have these checks and main tenance opera-

tions carried out by a specialized technician.

• Inflate the tyres using a protection str ucture and a pneuma tic

inflating gun with extension comp lete wit h contr olling pres sure gauge.

RWA01670

RWA01680

• Before starting thi s operation, make sure that there is no on e

in the vicinity and position yourself in front of the tread.

• Do not exceed the inflation pres s ur es pr es cr i bed for the singl e

types of tyre and make sure that all t he tyres have the same pressure.

2.8.21 PRECAUTIONS FOR THE INSTALLATION OF THE EXHAUST SYSTEM TAILPIPE

PRECAUTIONS FOR MAINTENANCE

• When the machine is stopped a t the end o f work, the exhaust

pipe (1) and the tailpipe (2) are ver y ho t. In these c ond iti ons, if any maintenance operation has t o b e c arried out, the operator runs the risk of being burned or injured. Carry out any maintenanc e operation only w hen the temperature of these parts is normal and in any cas e always use thick gloves.

• Be part icularly careful when reasse mbling the tailpipe (2) on

the exhaust pipe (1). The tailpipe (2) must be pos i tio ned in the cor rec t d ir ec tio n an d respecting the angles indicated in the figure (A). By following the procedure indicated above, you prevent the exhaust gases from being di r ec ted towards the cab a nd therefore towards the operator.

RWA33380

60˚

RWA33390

2.8.22 PRECAUTIONS FOR THE USE OF THE SYNTHETIC BIODEGRADABLE OIL TYPE HEES

• It is not possible to mix the synthet ic biodegradable oil type HE ES with or dinar y hydraulic oils, since when the

temperature increases insoluble compounds are generated, which are depos ited on the filters and c log them (the maximum concentration of ordinary oil cannot exceed 1% of the total quantity of oil).

• The biodegradable oil can be used only in the hydraulic sy stem; it canno t be used for the endothe r mic engin e,

the transmissions, the braking system, etc.

• Before introducing the synth etic biodegradable oil in the hydraulic system, empty the s ystem completely, dis-

connecting the cyl inders an d all the p ar ts t hat may contain or dinar y oi l, and r eplace the drain filter with a new one. Start the engine and let i t idle without using the work equipm ent , wait unti l the oi l rea ches a temperatur e of at least 40°C, then start moving the e quipment, so tha t all the parts of the system are filled wit h oil. Stop the engine and check the oil level (see “4.7.3.e CHECKING THE HYDRAULIC SYSTEM OIL LEVEL”).

THIS PAGE WAS INTENTIONALLY LEFT EMPTY

THE MACHINE AND ITS OPERATIONS

SAFETY LOCKS

IMPORTANT

☞

3.1 S AFETY LOCKS

DANGER

• If it is necessary to carry out maintenance operations or

to stop the machine with raised loader arm, always engage the mechanical safety lock and the control lever lock.

• When travelling on roads, always engage the mechanical

lock, lock the control lever in order to keep the front bucket in a stable position and use the front bucket antirotation lock and the teeth protection.

• When travelling on roads or when the backhoe is not be-

ing used, always connect the boom to the safety lock , f old the arm and the bucket completely and lock both the swing and the control lever. If the machine is equipped with backhoe servo controls, always engage the control locking safety device by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27. Non-compliance with these rules may cause serious damage in case of accidental lowering or rotation of the equipment.

3.1.1 FR ONT LOADER LOCKS

The loader ar m is provided with two safety locks tha t have two distinct essential functions:

a) SAFETY LO CK (1): for the position of the arm when th e

machine is subjected to maintenance on the engine unit and inspection of the hydraulic system equipmen t and of the auxiliary equipment housed in the engine compartment and in any case to the inspe ctions and m aintena nce operations that must be carried out with raised arm (A).

b) SAFETY LO CK (2): for the position of the arm when th e

machine is travelling on roads (B).

It is important to remember that in work conditions the safety lock (1) must be positi oned agai nst the a rm (C) and secure d in that position by means of the s afety pin (3), whil e th e s afety lock (2) must be put in th e t ool c omp artment positioned in the op erator’s cab, under the seat support.

RWA04350

• The safety locks (1-2) must always adhere to t he ste ms of

the hydraulic cylinders on whose eyes they are applied.

• The safety locks must be positioned definitively by bring-

ing the contact surfaces against each other with a sl ow and continuous movement, in such a way as not to damage the cylinder head surfaces.

• When the safety locks are in their definitive position, fas-

ten them with the safety pins (3).

RWA04360

SAFETY LOCKS

The other applications of the safety locks concern:

a) Installation of the front bucket swing lock (1). b) Engaging of the front loader (2) control lever lock. c) Installation of the teeth protection casings (3).

RWA04370

RWAA0770

RWA03640

RWA26210

SAFETY LOCKS

IMPORTANT

☞

3.1.2 BACKHOE LOCKS

The backhoe is held c ompletely raised by a s ingle cou pling th at does not permit the lowering of th e boom. The other safety device regards the swing, which is locked, either in the central and in the folded position, by means of a pin.

To lock the boom, proceed as follows:

1 - Fold the bucket and arm completely. 2 - Raise the safety lo ck (1) b y pr es sin g th e c on t ro l switch (l ed

on) positioned on the side dashboard (See “3.3.2 pos. 20”).

3 - Ra ise th e boo m co mpl ete ly and enga ge the safety lock (1)

by pressing the switch again (led off). 4 - Rotate the boom and insert the antirotation pin (2). 5 - Install the safety chains (5) for the stabilizers. 6 - Stop th e eng ine a nd s hift th e levers (3) to s ettle the s afety

locks. 7 - Engage the control lever lock (4).

RWAA0780

• If the machine is equipped with backhoe servo controls,

always engage the control locking safety device by pressing the relevant switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)”, pos. 27.

RWAB0090

RWAB0080

RWA34830

RWA03650

3.2 GENERAL VIEWS

3.2.1 FRONT GENERAL VIEW

RWA30480

GENERAL VIEWS

RIGHT

FORWARD

1 - Front bucket 2 - Bucket dumping cylinder 3 - Bucket lifting arm 4 - Cab

LEFT

5 - Rear axle 6 - Fuel tank 7 - Lifting cylinder 8 - Front axle

GENERAL VIEWS

3.2.2 BACKHOE GENERAL VIEW

RWA02130

RIGHT

FORWARD

1 - Bucket 2 - Buc ket cylinder 3 - Arm 4 - Boom 5 - Arm cylinder 6 - Boom cylinder 7 - Hydraulic oil tank

8 - Stabilizers

9 - Backhoe sliding guides 10 - Backhoe locking cylinders 11 - Boom swing cylinders 12 - Sliding plate 13 - Revolving support

LEFT

3.2.3 CAB INSIDE GENERAL VIEW

3.2.3.1 CAB INSIDE GENERAL VIEW (Standard version)

GENERAL VIEWS

RWA02550

1 - Reversing gear control lever 2 - Steering wheel 3 - Front dashboard 4 - Direction selector - dimmer switch 5 - Gearshift lever 6 - Front loader control lever 7 - Accelerator pedal 8 - Brake pedals

9 - Side dashboard 10 - Hand accelerator 11 - Parking brake 12 - Arm and swing control lever

(Standard version “ISO system controls”)

- Boom and swing control lever (On request “Komatsu and “X” system controls”)

13 - Boom and bucket control lever

(Standard version “ISO system controls”)

- Arm and bucket control lever (On request “Komatsu and “X” system controls”)

14 - Right stabilizer control lever 15 - Left stabilizer control lever 16 - Steering wheel adjustment lock (if provided)

RWA34940

RWA16620

RWA34840

INSTRUMENTS AND CONTROLS

RWA02550

3.2.3.2 CAB INSIDE GENERAL VIEW (Version with servcontrols available on request)

RWA37740

9 - Side dashboard 10 - Hand accelerator 11 - Parking brake 12 - Arm and swing control lever

(Standard version “ISO system controls”)

- Boom and swing control lever (On request only with “Komatsu system contr ols” Patt er n Change)

13 - Boom and bucket control lever

(Standard version “ISO system controls”)

- Arm and bucket control lever (On request only with “Komatsu system contr ols” Patt er n Change)

14 - Left stabilizer control switch 15 - Right stabilizer control switch 16 - Steering wheel adjustment lock (if provided)

RWA16620

RWA37750

3.3 INSTRUMENTS AND CONTROLS

3.3.1 FRONT INSTRUMENTS

RWA31470

INSTRUMENTS AND CONTROLS

1 - Transmission oil temperature warning

light

2 - Engine coolant temperature warning

light

3 - Four-wheel drive engageme nt warning

light 4 - Low fuel warning light 5 - Direction indicator warning light 6 - High beam warning light 7 - Parking brake and brake oil level warn-

ing light 8 - Differential locking warning light 9 - Direction selector, dimmer switch, horn,

blinking

10 - Four-wheel drive swit 11 - Front windshield wiper / washer switch 12 - Front working light switch 13 - Emergency switch (HAZARD) 14 - Electric safety valve switch (if installed)

1 - TRANSMISSION OIL TEMPERATURE WARN-

ING LIGHT

This warning l ight comes on, together with the acoustic alarm, when the transmission oil exceeds the maximum temperature allowed; when it comes on, immediatel y stop the machine, selec t the neutral gear and let it cool down with the engine runnin g at about 1200 rpm until the warning light goes out. If this inconvenience occurs repeatedl y, have the machine checked and if necessary repaired by an authorized repair shop.

2 - ENGINE COOLANT TEMPERATURE WARN-

ING LIGHT

This warning l ight comes on, together with the acoustic sig nal, when the engine c oolan t exceeds the maxi mum tem peratur e allowed; when it comes on, let the engine idle with minimum acceleration (1200 rpm) until the warning light goes out. If this inconvenience occurs again, make sure that the radiator is clean.

3 - FOUR-WHEEL DRIVE ENGAGEMENT WARN-

ING LIGHT

It comes on when the four-wheel drive is engaged.

RWA02580

4 - LOW FUEL WARNING LIGHTE

This warning light comes on when abou t 17 l. fuel are le ft in the tank and therefore it is necessary to refuel as soon as possible.

INSTRUMENTS AND CONTROLS

5 - DIRECTION INDICATO R WARNING LIGHT

This warning light comes on in termitten tly when the l ever (9) or the emergency switch - pos. 13 - are operated.

6 - HIGH BEAM WARNING LIGHT

It comes on when the high beam is operated through the dimmer switch - pos. 9.

7 - P ARKING BRAKE AND BRAKE FLUID LEVEL

WARNING LIGHT

This warning light indicates t hat the park ing brake has been applied or that the brake fluid l evel is low; if it comes on for the latter cause, stop the machine and top up the brake fluid. If this occurs repeate dly, check the braking syste m in order to eliminate any leakage.

8 - DIFFERENTIAL LOCKING WARNING LIGHT

It comes on when the differential is locked by means of the push button positioned on the loa der contr ol lever (See “3.3.6 pos. 11 DIFFERENTIAL LOCKING PUSH BUTTON).

RWA02590

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

IMPORTANT

☞

9 - DIRECTION SELECTOR, DIMMER SWITCH,

HORN, BLINKING

This is a combi ned switch that is positioned under the steer ing wheel, on the right side, and controls the direction indicators, the headlights and the h orn. By rotating it one click cl ockwise it is possible to switch on the parking lights and the in stru ment lighting, while with two clicks the low beam comes on. It is possible to switch over from low beam to high beam by pushing the lever downwards (position D), wh ile the lights blink when the lever is pushed upwards (position E). Push the lever forward (position A) to si gnal left, pull the lever backward (position B) to signal right. Press (C) to sound the horn.

10 - FOUR-WHEEL DRIVE SWITCH

This is a two-position switch. When it is pressed, it remains pressed, lights up and engages the four-wheel drive. In this position also the warning light pos. 3 comes on. When the switch is pressed again, it r eturn s to its ini tial posi tion and disengages the four-wheel drive while the machine automatically returns to the normal drive.

RWA02600

• When travelling at high speed and on roads, disengage

the four-wheel drive.

• The four-wheel drive is automatically connected by press-

ing the brake pedals, only with the 4th gear engaged.

11 - FRONT WINDSHIELD WIPER / WASHER

SWITCH

With the first click it operates the windshield wiper, while with the second click (with automatic return to the first) it operates the windshield washer.

12 - FRONT W ORKING LIGHT SWITCH

This switch enables the front working light circuit.

• When travelling on roads, turn off the working lights.

RWA31480

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

13 - EMERGENCY SWITCH

This switch simultaneously ope rates all the direction lights an d must be during road travel whenever the machine is temporari ly stopped on the roadway or however in anomalous positions.

14 - ELECTRIC SAFETY VALVE SWITCH

(if installed)

This is a two-position switch. When pressed, it remains in the low position, the relevant red led comes on and the safety valves installed on th e cylinde rs of th e front loader are deactivated. When released, it returns to its original position, the safety valves are activated and at the same time the red led goes out.

• Always deactivate the electric safety valves when the load

stabilizer system “LSS” is operated. For further information regarding the “LSS”, see “6.11 LOAD STABILIZER SYSTEM (LSS)”.

13 14

RWA31490

3.3.2 SIDE INSTRUMENTS

3.3.2.1 SIDE INSTRUMENTS (Standard version)

RWA34850

INSTRUMENTS AND CONTROLS

1 - Fuel level indicator 2 - Revolution counter - Hour meter 3 - Engine coolant temperature indicator 4 - Air cleaner clogging warning light 5 - Engine oil pressure warning light 6 - Glow plug preheating warning light 7 - Generator warning light 8 - Engine coolant temperature warning

light 9 - Available for optional equipment warn-

ing lights

10 - Acoustic alarm 11 - Rear working light switch 12 - Rear windshield wiper / washer switch 13 - Revolving light switch 14 - Rear horn 15 - Air conditioner switch (if provided) 16 - Load stabilizer system switch (if p rovid-

ed)

17 - Ignition switch 18 - Fan switch 19 - Backhoe speed control button 20 - Backhoe boom lock switch 21 - Backhoe sliding lock switch

INSTRUMENTS AND CONTROLS

3.3.2.2 SIDE INSTRUMENTS (Version with servo controls available on request)

1 - Fuel level indicator 2 - Revolution counter - Hour meter

RWA37760

3 - Engine coolant temperature indicator 4 - Air cleaner clogging warning light 5 - Engine oil pressure warning light 6 - Glow plug preheating warning light 7 - Generator warning light 8 - Engine coolant temperature warning

light

9 - Available for optional equipment warn-

ing lights 10 - Acoustic alarm 11 - Rear working light switch 12 - Rear windshield wiper / washer switch 13 - Revolving light switch 14 - Rear horn 15 - Air conditioner switch (if provided) 16 - Load stabilizer system switch (if p rovid-

ed) 17 - Ignition switch 18 - Fan switch 19 - Backhoe speed control button 20 - Backhoe boom lock switch 21 - Backhoe sliding lock switch 22 - Backhoe control locking switch (only in

the version with servo controls) 23 - Left stabilizer control switch (only in the

version with servo controls) 24 - Right stabilizer control switch (only in

the version with servo controls)

INSTRUMENTS AND CONTROLS

1 - FUEL LEVEL INDICATOR

It indicates the fuel level in the tank; this indicat ion is given only when the ignition key is in position «I» (see pos. 17).

2 - REVOLUTIO N COUNTER - HO UR METER

This is a combine d inst rument th at indica tes the eng ine r unnin g speed with a pointer, while the number of operating hours appears on the lower displays. The reading is to be co nsidered valid for the calculation of the maintenance intervals.

RWA02620

RPM x 100

electronic

RWA02630

RPM x 100

electronic

3 - ENGINE COOLANT TEMPERATURE INDICA-

TOR

It indicates the engine coolant temperature, which normally must be included between 80 and 85°C.

RWA02640

RPM x 100

electronic

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

4 - AIR CLEANER CLOGGING WARNING LIGHT

This warning light comes on when the engine air filter needs cleaning.

5 - ENGINE OIL PRESSURE WARNING LIGHT

This warning l ight comes on, together with the acoustic alarm, when the engine i s n ot running and the starting circuit is op erated and goes out as soon as the engine lubrication circuit is pressurized. If it does not go out or c omes on when the engine is runn ing, stop the machin e immediately and try to find the cause of the failure.

6 - GLOW PLUG PREHEATING WARNING LIGHT

It comes on when the ignit ion key is tur ned to position «» for the cold start of the engine (see “3.6.2.2 STARTING WITH COLD ENGINE OR IN COLD CLIMATES”).

RWA02650

RPM x 100 electronic

7 - GENERATO R WARNING LIGHT

This warning l ight comes on, together with the acoustic alarm, when the starting circuit is energized and goes out when the engine exceeds the idling rpm; if this warning light remains on even when the engine is r unning at the nor mal operating speed, t his means that the alter nator is not working and th e battery is not charged correctly.

• If the warning light does not come on when the ignition

key is turned to position «I», this means that the alternator is faulty or broken; in this case the engine does not start even if the gears are in neutral.

8 - ENGINE COOLANT TEMPERATURE WARN-

IMPORTANT

☞

ING LIGHT

This warning l ight comes on, together with the acoustic alarm, when the engine c oolan t exceeds the maxi mum tem peratur e allowed; in this case, let th e e ngi ne idl e (approx. 1200 rpm) until it stops. If this inconvenience occurs again, make sure that the radiator is clean.

9 - AVAILABLE FOR OPTIONAL EQUIPMENT

WARNING LIGHTS

RPM x 100 electronic

RWA02660

INSTRUMENTS AND CONTROLS

OPT OPT OPT

10 - ACOUSTIC ALARM

This alarm starts when the ci rcuits are energized by means of the ignition switch (by tur ning it to position “I”) and is automatically disconnected when the engine starts. The sounding of the alarm when the machine is wor kin g sign als the following anomalies:

• Insufficient engine oil pressure

• Overheating of the engine cooling circuit

• Overheating of the transmission oil

• Faulty alternator or worn belt

• Incorrect position of the seat while the machine is moving.

11 - REAR WORKING LIGHT SWITCH

This switch enables the rear working light circuit.

• When travelling on roads, turn off the working lights.

12 - REAR WINDSHIELD WIPER / WASHER

SWITCH

With the first click it operates the windshield wiper, while with the second click (with automatic return to the first) it operates the windshield washer.

RWA02720

RPM x 100

electronic

13 - REV OLVING LIGHT SWITCH

This switch must be operated when it is necessary to travel on roads and after connecting the light to the outlet (See “3.3.5 pos. 2”).

RWA02670

INSTRUMENTS AND CONTROLS

14 - REAR HORN

It serves to warn the persons in the surrounding area before starting work and in case of danger when working with the backhoe.

15 - AIR CONDITIONER SWITCH (if provided)

When this switch is pressed, the r elevant green led comes on and the air conditioner is started. For further informa tion on the operation of the air condi tioning system, see “3.3.5 AIR CONDITIONER”.

16 - LOAD STABILIZER SYSTEM SWITCH (if pro-

vided)

When this switch is pressed , the green led comes on and the load stabilizer system is operated. To recharge the battery and to keep the pressure constant, press the switch. For further information on the LSS system, see "6.11 LOAD STABILIZER SYSTEM (LSS)".

17 - IGNITION SWITCH

The ignition switch is a rotary key switch with four positions marked with the following symbols: «» - (OFF) - I - «» (START). For further details on the use of this switch see “3.6.2 STARTING THE ENGINE”).

RWA33740

RPM x 100

electronic

18 - FAN SWITCH

It is a three-speed switch and operates the fan motor. Tur n the switch clockwise to increase the fan speed. If operated after the opening of the tap instal led on the heater, it ensures the circulation of war m air and serves as heating switch (see “14.3 VENTILATION AND HEATING”). The temperature of the air delivered by the heater is adjus ted through th e knob (T). Tur n the knob cl ockwise to increase the temperature and counterclockwise to reduce it. If the machine is provided with air conditioning system, the three knobs (T), (18) and (R ) can be used to adjust the air flow and therefore to choose the temperature inside the cab. For further information, see “3.3.5 AIR CONDITIONER”.

RWA31210

RWA34870

19 - BACKHOE SPEED CONTROL BUTTON

IMPORTANT

☞

IMPORTANT

☞

IMPORTANT

☞

This button permits the selection of the oil delivery of the hydraulic pump. Whenever restarted, the machine automatically selects the POWER mode (LED on), even if when it stop ped the sele cted mode was ECONOMY. Th is pos iti on ma kes it possible to use the maximum oil delivery and is indispe nsable for a correct use of the backhoe. When the button is pressed (LED off), the ECONOMY operation mode is selected. To return to the POWER mode (LED on), press the button again. The machine passes automatically from the POWER to the ECONOMY operation mode when the forward or the reverse gear are engaged (inverter control lever forward or backward). To return to the POWER operation mode, shift the lever back to the neutral position

POWER

INSTRUMENTS AND CONTROLS

RWA31230

• If the machine is equipped with backhoe servo controls, the

switch (19) is positioned on the upper part of the side dashboard, as shown in Fig. A.

20 - BACKHOE BOOM LOCK SWITCH

This switch is used to couple the safety lock with the boom when the backhoe is not u sed o r wh en t ravelling. The sa fety lock is e ngaged when the switch is off (led off), while its disengagement takes place when th e switch is on (le d on ). (S ee “3.3.6.1 pos. 8”).

• If the machine is equipped with ba ckhoe servo controls, the

switch (20) is positioned on the upper part of the side dashboard, as shown in Fig. A. The specific function of the switch (20) can be disabled through the control locking switch (22). For further information, see “22 - CONTROL LOCKING SWITCH (Version with servo c ontrols)”.

21 - BACKHOE SLIDING LOCK SWITCH

This switch has the function to release the backhoe unit from the sliding guides, i n such a way as to make it possible to change the position of the backhoe with respect to the machine. The backhoe unit is generally locked on the guides a nd the switch is not operated (led off). When pre ssed, the switch comes on and releases the unit from the guides, thus allowing th e backhoe to slide; once the desired position has been reached, press the switch again to lock the backhoe unit (led off).

POWER

RWA37770

• If the machine is equipped with ba ckhoe servo controls, the

switch (21) is positioned on the upper part of the side dashboard, as shown in Fig. A. The specific function of the switch (21) can be disabled through the control locking switch (22). For further information, see “22 - CONTROL LOCKING SWITCH (Version with servo c ontrols)”.

INSTRUMENTS AND CONTROLS

22 - BACKHOE CONTROL LOCKING SWITCH

(Version with servo controls only)

This switch has the speci fic function to disable all the backhoe controls and this function must always be activated when the backhoe is not used or when travelling on roads. To activate the control locking function, press the switch (22). The actual locking of the controls is indicated by the co ming on of the correspo nding warning light. To deactivate this function, press the switch (22) again until the cor responding warning light goes out. The backhoe control locking function is automatically activated at each start of th e machine and is signalled by the coming on of the corresponding war ning light. For further informat ion on the operation of this switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)” pos. 27.

RWA37780

23 - LEFT STABILIZER CONTROL SWITCH

(Version with servo controls only)

This switch controls the lifting and lowering of the left stabilizer.?Push the switch (23) towards the outside of the cab to lower the left stabilizer. To lift the stabilizer, pull the switch (23) towards the inside of the cab. The function of the switch (23) can be disabled by means of the backhoe control l ocking switch (22). For further information on the operation of the stabilizers, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)” pos. 18.

24 - RIGHT STABILIZER CONTROL SWITCH

(Version with servo controls only)

This switch controls the lifting and lowering of the right stabilizer. Push the switch (24) towards the outside of the cab to lower the right stabilizer. To lift th e stabilizer, pull the switch (24) towards the inside of the cab. The function of the switch (24) can be disabled by means of the backhoe control l ocking switch (22). For further information on the operation of the stabilizers, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)” pos. 19.

INSTRUMENTS AND CONTROLS

3.3.3 PUSH BUTTONS ON THE FRONT LOADER CONTROL LEVER

1 - DECLUTCH PUSH BUTTON

This push button is us ed to transform all the engine p ower into hydraulic power for the lifting of materials. (See “3.3.6 pos. 10 DECLUTCH CONTROL”).

2 - DIFFERENTIAL LOCKING PUSH BUTTON

This push button must be used with low gears and reduced speed only when it is necessary to make the rear driving wheels integral with each other in case of slipping. (See "3.3.6 pos. 11 DIFFERENTIAL LOCKING PUSH BUTTON").

3 - 4IN1 BUCKET OPENING PUSH BUTTON

Press the push button to open the bucket; when the push button is released, the bucket stops. (See “3.3.6 pos. 12 4IN1 BUCKET OPENING CONTROL”).

4 - 4IN1 BUCKET FOLDING PUSH BUTTON

Press the push button to fold the bucket; when the push button is released, the bucket stops. (See “3.3.6 pos. 13 4IN1 BUCKET FOLDING CONTROL”).

5 - FRONT LOADER SPEED CONTROL PUSH

BUTTON

The front loader movement speed can be increased by means of this push button.

RWA02750

3.3.4 PUSH BUTT ON ON THE GE ARSHIFT LEVER

1 - DECLUTCH PUSH BUTTON

This push button is used to shift gears when the machine is travelling. (See “3.3.6 pos. 15 DECLUTCH CONTROL”).

RWA02760

RWA02770

INSTRUMENTS AND CONTROLS

3.3.5 ELECTRICAL ACCESSORIES

1 - OVERHEAD LAMP

The overhead lamp is used to check the instr um ents an d the inside of the cab when visibility is scarce.

2 - ELECTRIC OUTLET

The electric outlet is a 12V outlet in compliance with the ISO 4165-1979 standa rd. It is used for the connection o f the revolving light and of the inspectio n lamp when maintenance operations are to be carried out and visibility is scarce and for the connection of the emergency light. The outlet is powered with the r evolving light switch. (Se e “3.3.2 pos. 13”).

RWAA0230

3 - CIGARETTE LIGHTER OUTLET

The outlet (3) is positioned on the lower par t of the side dashboard and is powered by a 12V supply. It is used to for the insertion of the cigarette li ghter and is perfectly compatible with the cigarette lighters available on the ma rket. The same outlet can also be used to recharge mobile phones; before using it, remove the safety plug (A).

4 - BATTERY DISCONNECTION SWITCH

(if installed)

The battery disconnection switch (4) is positioned on the left side of the machine, inside the engine compartment and to reach it it is necessary to open the engine hood (see "3.5.1 ENGINE HOOD"). It is possible to inter rupt the passage of current fro m the battery to the e lectric syste m of the machine by rotating the switch anticlockwise and removing it. Al ways interrupt the passage of current be fore carr ying out any operati on on the ba tter y or the electric system and be fore carr ying ou t any welding ope ration on the machine. To restore the electr ic contact, put back the switch and rotate it clockwise.

RWAA0240

RWA38190

RWA37790

3.3.6 MACHINE CONTROLS

3.3.6.1 MACHINE CONTROLS (Standard version)

RWA37800

RWA34950

INSTRUMENTS AND CONTROLS

1 - Reversing gear lever 2 - Brake pedals 3- Accelerator 4 - Front loader control le ver 5 - Gearshift leve 6 - Parking brake 7 - Hand accelerator 8 - Backhoe boom lock control switch

9 - Backhoe sliding lock control switch 10 - Declutch push button 11 - Differential locking push button 12 - 4in1 bucket opening control push button 13 - 4in1 bucket folding control push button 14 - F ront loader speed control push button 15 - Declutch push button 16 - Left backhoe control lever 17 - Right backhoe control lever 18 - Left stabilizer control lever 19 - Right stabilizer control lever 20 - Steering wheel adjustment locking lever

RWA02800

RWA02810

RWA34980

INSTRUMENTS AND CONTROLS

RWA37800

3.3.6.2 MACHINE CONTROLS (Version with servo controls available upon request)

RWA37810

1 - Reversing gear lever 2 - Brake pedals 3- Accelerator 4 - Front loader control le ver 5 - Gearshift leve 6 - Parking brake 7 - Hand accelerator 8 - Backhoe boom lock control switch

9 - Backhoe sliding lock control switch 10 - Declutch push button 11 - Differential locking push button 12 - 4in1 bucket opening control push button 13 - 4in1 bucket folding control push button 14 - F ront loader speed control push button 15 - Declutch push button 16 - Left backhoe control lever 17 - Right backhoe control lever 18 - Left stabilizer control switch 19 - Right stabilizer control switch 20 - Steering wheel adjustment locking lever

RWA02800

RWA02810

INSTRUMENTS AND CONTROLS

21 - Left joystick locking lever

(only with servo control system)

22 - Right joystick locking lever

(only with servo control system)

23 - Left support adjusting knob

(only with servo control system)

24 - Right support adjusting knob

(only with servo control system)

25 - Left joystick stroke adjusting knob

(only with servo control system)

26 - Right joystick stroke adjusting knob

(only with servo control system)

27 - Backhoe control locking switch

(only with servo control system)

28 - Offset boom left swing control push button

(if installed and only with servo control system)

29 - Offset arm right swing control push button

(if installed and only with servo control system)

30 - Horn push button

(only with servo control system)

31 - Telescopic arm extension control push button

(if installed and only with servo control system)

32 - Telescopic arm retraction control push button

(if installed and only with servo control system)

33 - Hammer control push button

(if installed and only with servo control system)

34 - Pattern change control lever

(if installed and only with servo control system)

RWA37820

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

1 - REVERSING GEAR LEVER

DANGER

• When it is necessary to park or leave the machine even if temporarily, shift the lever to position (N) and

always apply the parking brake.

• The machine is equipped with an acoustic alarm that is activated if the operator, with the engine run-

ning, moves the reversing gear lever (1) to position F or R with the seat rotated in any position different from the correct driving position. This is a danger signa l, since it is absolutely forbidden to carry o ut any movement with the machine while working with the ba ckhoe equipmen t or in any case w ith th e seat rotat ed by 180° with respect to the regular driving position. Remember that the operator must carry out any movement of the machine while seated in the correct driving position, with locked seat and fastened safety belt.

• Non-compliance with these rules may cause serious accidents.

• Operate the lever only when the engine is running at low speed.

• The engine can be started only with the lever in neutral position (N).

• If the operator deems it necessary, the machine may also be equipped with an acoustic alarm for move-

ments in reverse. This device can be installed on an apposite area on the rear part of the frame (see 2.4.3 CHECKS FOR TRAVELLING IN REVERSE) and before carrying out any movement in reverse it is recommended to make sure that this device is functioning perfectly. To check the functionality of this acoustic alar m, proceed as follows:

- Start the machine (see “3.6.2 STARTING THE ENGINE”)

- Press the brake pedals.

- Shift the reversing gear lever (1) to the reverse position R. If the alarm doesn’t work, have the machine checked by your Komatsu Utility Dealer.

By raising this lever and rotating it on the vertical axis, it is possible to select:

F - the forward travel, if the lever is shifted FORWARD R - the reverse, if the lever is shifted BACKWARD

RWA02820

2 - BRAKE PEDALS

IMPORTANT

☞

INSTRUMENTS AND CONTROLS

DANGER

• The brake pedals must always be connected in 3rd and

4th gear and when the machine travels on roads.

• Non-compliance with this r ule may result in serious acci-

dents.

The machine is provid ed with two split brake pedals that m ake it possible to turn shar ply in small work areas with many obstacles; with the right pedal it is possible to make sharp turns to the right, with the left ped al it is possible to m ake shar p tur ns to the left. When the pedals (2) are used individually, reduce the speed and keep the bucket as low as possible. The pedals must a lways be connected with each other by means of the connecti on pin (A) when using the higher gears and travelling on roads.

• When the machine is running at high speed and only with

the 4 the automatic connection of the four-wheel drive.

gear engaged, t he b rakin g p ower is incr eas ed wit h

RWA13950

RWA13960

3 - ACCELERATOR

Use the accelerator with c are, especially when the machine is under strain or is working in dif ficult conditions. Avoid any useless acceleration to reduce consumption and extend the life of either the engine and the machine.

RWAA10760

INSTRUMENTS AND CONTROLS

4 - FRONT LOADER CONTR OL LEVER

DANGER

• Before carrying out any operation with this lever, the oper-

ator must be sitting in the driving position with fastened seat belt.

• If the loader control lever has to be used during travel,

avoid any abrupt and quick movement that may affect the balance of the machine and make it difficult to drive.

• If it is necessary t o leave the machine on a slope , take a ll

the precautions aimed at preventing any uncontrolled movement of the machine itself. (See “3.7 PARKING THE MA CHINE”).

• Before leaving the operator’s seat, lower the bucket to the

ground and engage the safety lock before stopping the engine.

The front loader con trol lever (4) is positioned on the ope rator’s right and contro ls the raising and lowering of the arm a nd the folding and dumping of th e bucket according to the orthogonal movements listed below. If the machine is properly equipped, the shifting of the lever to position E (defined by a click) sets the loader to a free, or floating position, that is, to a pos ition in w hich it ca n au tomati cally follow the undulation of the ground. Furthermore, when the lever (5) is shifted by 45° towards the axis of the machi ne in posi tion F, the “return to dig” device is con- nected, which lowers the ar m and at the same ti me moves the bucket back in loading position. As soon as th e bucket touches the ground, the device is automatically disconnected and the machine returns to its normal position.

RWA02830

N - Neutral A - Bucket folding B - Arm lowering C - Bucket dumping D - Arm raising

Only with the appropriate equipment:

E - Free (floating) arm F - Self-leveling (return to dig)

RWA33710

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

CAUTION

If the lever is operated in directions that are inclined with respect to the machine axes, simultaneous movements propo rtional to the angle of inclinati on are obt ained, since the two hydraulic distributors correspondi ng to each single function are engaged at the same time.

N - Neutral A - Arm lowering - Buck et folding B - Arm lowering - Bucket dumping C - Arm raising - Bucket dumping D - Arm raising - Bucket folding

• All the movements are locked when the safety pin is en-

gaged. (See "3.1.1 FRONT LOADER LOCKS").

• Always insert the safety pin when travelling on roads.

RWA00550

RWA25630

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

5 - GEARSHIFT LEVER

DANGER

• Since no mechanical connection is provided between the

gearshift and the engine, if the machine is parked on a slope it can move freely even with engaged gears; for this reason, always apply the parking brake, in order to avoid any damage.

• Engage the gears only with the engine running at low

speed.

• Avoid shifting up when using the machine for heavy-duty

applications.

• Always shift the lever to the neutral position (N) when

parking or leaving the machine, even if temporarily.

By means of the lever (5) it is possible to engage o ne of the four available gears, which are arranged according to the diagram. The choice of the gear to be engaged is up to th e operator ; it is advisable to use the low gears for heavy-duty applications and to use the high gears for mov ements on flat surfaces or high-speed travelling. This precaution serves to protect the converter unit from dangerous overheatings.

RWA03260

RWA03270

• During normal travel, the gears can be shifted up or down

with the declutch push button (15) on. (See “3.3.6 pos. 15 DECLUTCH PUSH BUTTON”).

• Before shifting down, decelerate by putting on the brakes.

6 - PARKING BRAKE

CAUTION

• The parking brake must be applied whenever it is neces-

sary to leave the driving position, even if temporarily.

• The machine must be parked with the rear wheel firmly

resting on a flat surface. If one of the rear wh eels is unstable or rests on a small obstacle, the machine may move.

• Periodically check the brake efficiency.

Non-compliance with these rules may cause serious accidents or even death.

• The parking brake must be released if the machine breaks

down and it is necessary to remove it.

Braking is obtained by pulling the lever completely upwards, until the safety device is coupled; re lea se is obta ine d by pres sin g th e lower safety device while releasing the lever, which automatically returns downward.

INSTRUMENTS AND CONTROLS

RWA34990

• The warning light 7 positioned on the front dashboard

(see «3.3.1 pos. 7 FRONT INSTRUMENTS») signals that the parking brake has been applied.

• In order to ensure safety, when the parking brak e is ap-

plied the functions of the reversing gear lever are locked (See «3.3.6 pos. 1 REVERSING GEAR LEVER»).

RWA35000

INSTRUMENTS AND CONTROLS

7 - HAND ACCELERATOR

DANGER

• The use of the hand accelerator is allowed only under the

conditions indicated; use in any other condition may cause serious accidents.

The hand accelerator can be used only when the engine is warming up and succ essively only when it is necessar y to work with the backhoe; it can also be used for cer tain maintenance operations.

Idling position: pull the lever completely backward. Max. speed position: push the lever completely forward.

CAUTION

• The maximum speed position corresponds to 1900-2000

rpm.

If possible, avoid using the machine with the lever completely pushed forward, since in this way consumptions will be considerably reduced and the life of either the engi ne and the machine will be longer. For a correct use of the l ever, keep to the indications given on the plate (1) applied i nside the right dashboard. The plate (1) is characterized by two coloured areas, the green area “A” and the red area “B”, referring to different engine rotation speeds:

• Green area “A”: this area indi cates an engin e rotation speed

of 1700 rpm, which is the value recommended to the operator.

RWA34930

• Red area “B”: this area indicates an engine rotation speed up

to 1900 50 rpm, which i s the maximum speed al lowed for the use of the backhoe. The engine speed can b e checked on the revolution counter positioned on the right dashboard. See “3.3.2 pos. 2 REVOLUTION COUNTER – HOUR COUNTER”.

RWA33150

8 - BACKHOE BOOM LOCK CONTROL

IMPORTANT

☞

SWITCH

DANGER

• Always engage the boom safety lock when the backhoe is

not used and when travelling on roads.

This is a two-posi tio n switch and is u sed to connect the boom to the safety lock (A). In the rest position (led o ff) the backhoe is free and can move without any interference with the lock. The switch is in this position even when the boom is conne cted to the safety lock. To engage the safety lock, proceed as follows: Select the uncoupling position by pressing the switch (8) (led on), fold the arm and the bucket, raise the boom co mpl ete ly an d engage the lock by pressing the switch again (led off). Before moving the machine, make sur e that the lo ck is proper ly positioned in its seat.

INSTRUMENTS AND CONTROLS

RWAB0100

• If the machine is equipped with backhoe servo controls,

the switch (8) is positioned on the upper part of the side dashboard, as shown in Fig. B. The switch (8) can be disabled by means of the switch (27). For further information, see “BACKHOE CONTROL LOCKING SWITCH pos.27”.

RWAB0110

RWA03280

RWA37830

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

9 - BA CKHOE SLIDING LOCK CONTR OL

SWITCH

The switch (9) has the function to release t he pressure necessary to lock the backhoe uni t, so that the backhoe can slide on the guides. With released switch (led off) the backhoe unit is locked on the guides. With pressed switch (led o n) the un it i s released and can slide on the guides.

• If the machine is equipped with backhoe servo controls,

the switch (9) is positioned on the upper part of the side dashboard, as shown in Fig. B. The switch (9) can be disabled by means of the switch (27). For further information, see “BACKHOE CONTROL LOCKING SWITCH pos.27”.

CAUTION

• Before starting any operation, make sure that the backhoe

is locked on its guides.

RWA03290

10 - DECLUTCH PUSH BUTTON

DANGER

• Do not use this button for more than 15÷20 seconds.

• Do not use this button during travel on normal roads and

especially when travelling downhill, since this function releases the clutch and sets the machine in neutral.

The push button (10) is used when the machine is used as a loader; the declutch function serves to change all the engine power into hydraulic power, which is necessar y to lift the machine.

RWA37840

RWA03300

11 - DIFFERENTIAL LOCKING PUSH BUTTON

IMPORTANT

☞

INSTRUMENTS AND CONTROLS

• The locking of the differential is possible only with the 1

or 3rd gear engaged, either forward and reverse. The

2 connection in 4

• Before locking the differential, lower the speed as much

as possib l e, in order t o re d uc e t h e i mp a c t l o ad s o n the axle.

The locking of the differential must be used onl y when it is ne cessary to en gage the re ar driv ing wheels, in c ase of skid ding or if the mach ine is stuck in sand or mud. The locking of the differential is ob tained by sim ply pressin g the button (11) and only with the gears engaged (1 The locking is automati cally disconnected when th e wheels return to two-wheel drive.

gear has been inhibited.

, 2nd or 3rd).

12 - 4 IN1 BUCKET OPENING PUSH BUTTON

On the machines provided with the 4i n1 bucket, the distributor for the opening of the bucket is controlled throu gh the pus h button (12) positioned on the loader control lever. Press the button to open the bucket; when the button is released, the bucket movement stops.

RWA03310

13 - 4 IN1 BUCKET FOLDING PUSH BUTTON

On the machines provided with the 4i n1 bucket, the distributor for the folding of the bucket is controlled through the push button (13) positioned on the loader control lever. Press the button to fold the bucket; when the button is released, the bucket movement stops.

RWA03320

RWA03330

INSTRUMENTS AND CONTROLS

14 - FRONT LOADER SPEED CONTROL PUSH

BUTTON

The use of the push button (14) makes it possible to exploit the maximum oil delivery from the hydraulic pump when the machine is under load. Press the push button to increa se the delivery; when the push button is released, the oil delivery returns to the standard operating values. It is advisable to use the push button without i nterruption for no more than 5-6 seconds.

15 - DECLUTCH CONTROL PUSH BUTTON

RWA03340

DANGER

• Do not use this push button f or more than 15÷20 s econds.

• Do not use this push button when travelling downhill,

since this function releases the clutch and sets the machine in neutral.

The push button (15) is us ed to sh ift gears when the mac hine is moving. (See “3.3.6 pos. 5 GEARSHIFT LEVER”).

RWA03350

16/17 - BACKHOE CONTROL LEVERS

(Standard version)

DANGER

• Before carrying out any manoeuvre with these levers, the

operator must be sitting in the working position, that is, with the s eat rotated by 180° with resp ect to the driving position and with fastened safety belt; before any manoeuvre, take all the precautions indicated in section “3.13 USING THE MACHINE AS AN EXCAVATOR”.

• The machine is equipped with an acoustic alarm that is

activated if the operator, with the engine running, moves the reversing gear lever (1) to position F or R with the seat rotated in any position different from the correct driving position. This is a danger signal, since it is absolutely forbidden to carry out any movement with the machine while working with the backhoe equipment or in any case with the seat rotated by 180° with respect to the regular driving position. Remember that the operator must carry out any movement of the machine while seated in the correct driving position, with locked seat and fastened safety belt.

INSTRUMENTS AND CONTROLS

RWA35010

• Before leaving the working position, lower the equipment

to the ground and do not stop the engine if the safety loc is not engaged.

• When travelling on roads, always lock the levers by

means of the safety lock.

The backhoe control levers can be equipped with different boom, arm and bucket controls according to three different systems:

1 - ISO SYSTEM CONTROLS (Standard) 2 - KOMATSU SYSTEM CONTROLS (On request) 3 - X-SYSTEM CONTROLS (On request)

No movement can be carried out when the safety lever is shifted upwards (See “3.1.2 BACKHOE LOCKS”). The following diagrams show the basic an d combined mano euvres that can be performed with these three systems:

RWA02820

RWA34810

INSTRUMENTS AND CONTROLS

16/17 - BACKHOE CONTROL LEVERS (Version

with servo controls available on request)

DANGER

• Before carrying out any manoeuvre with these levers, the

• The machine is equipped with an acoustic alarm that is

• Before leaving the driver’s seat, lower the equipment to

the ground, always engage the safety device to lock the backhoe controls by pressing the switch (27) and raise both joysticks (16-17) towards the rear of the machine.

• Before starting to use the controls, check the control pat-

tern by carrying out short manoeuvres in order to make sure the all the movements corresponds to those shown on the decals.

RWA02820

RWA37850

• When travelling on roads, always engage the safety de-

vice to lock the backhoe controls by pressing the switch (27).

If the operators deems it necessary, the machine can be equipped with backhoe servo controls. This optional feature is particularly useful, in fact less effort is required to shift the controls and this reduces the stress to wh ich the operator is subje cted, as well as the time requ ired to carry out the various operations. All the backhoe controls can be disabled by pressing the switch (27) positioned on the upper part of the side dashboard. The locking of the controls is confi rmed by the coming on of the corresponding warning light. To enable the backhoe controls, press the switch (27) again and keep it pressed until the warning light goes out. For further information on the backhoe control locking switch, see “3.3.6.2 MACHINE CONTROLS (Version with servo controls)” pos. 27.

RWA37860

To use the backhoe control levers correctly , proceed as follows: 1 - With the ma chi ne at re st and th e en gi ne off, seat on the driv-

er’s seat and rotate it by 180° with respect to the driving position.

2 - Press the joystick locking levers (21-22) and lower both joy-

sticks (16-17) until reaching the desired operating position. Once they have reached the desired position, release both the locking levers (21-22) in order to lock the joysticks.?For further information, see (21-22) JOYSTICK LOCKING LEVERS. The position of the joysticks in operating condi tions can be adjusted by means of the relevant knobs (25-26 ) positioned on the cab floor. For the correct adjustment pr ocedure, keep to the instructions given in paragraph (25-26) JOYSTICK STROKE ADJUSTING KNOB.

3 - Adjust the height of the sup por t s (A ) by means o f th e adju st-

ing knobs (23-24) , until finding the position that is most suitable to your physical characteristics. For the correct adjustment procedure, keep to the in str uctio ns g iven in paragraph (23-24) SUPPORT ADJUSTING KNOB.

4 - Once the correct operating position of both joysticks has

been found, fasten the safety belt and sta rt the machine by proceeding as described in “3.6.2 STARTING THE ENGINE”. Disengage the backhoe control locking device by pressing the switch (27). The release of the controls is indicated by the going out of the relevant warning light.

5 - At the end of work, if possible, lower the equipment to the

ground and engage the control locking device by pressing the switch (27) again. The locking of the co ntrol s is conf ir me d by the coming on of the relevant warning light.

6 - Before rotating the seat to the driving position, pr ess the le-

vers (21-22) and at the same ti me raise the joysticks (16- 17) to bring them in vertical position. Once the desired p osition has bee n reached, rel ease the levers (21-22) in order to lock the j oysticks, respecting a given safety distance from the rear window. If it is necessary to adjust the stroke of both joysticks, turn the adjusting scr ews positioned on the front part of the same according to the procedure described in paragraph (25-26) JOYSTICK STROKE ADJUSTING KNOB.

The control lever (16) is positioned on the operator’s left and controls the ar m and the swing, while the con tr ol l ever (17) positioned on the operator’s right controls the boom and the bucket. On request of the operator, the machine can be equipped with two different control patterns at the same time, more precisely:

1 - ISO SYSTEM CONTROLS (Standard) 2 - KOMATSU SYSTEM CONTROLS (Optional) The choice of the desired co ntrol pattern is up to the operator ;

for the selection of the pa ttern desired, see paragraph (34) PATTERN CHANGE CONTROL LEVER (on request). The patterns illustrated below show the bas ic manoeuvres and the combined manoeu vres that ca n be carri ed out with the two systems.

INSTRUMENTS AND CONTROLS

RWA37870

RWA37880

INSTRUMENTS AND CONTROLS

ISO STANDARD CONTROLS

LEVER 16 (BASIC MANOEUVRES)

N - Neutral A - Boom swing to the left B - Arm opening C - Boom swing to the right D - Arm folding

LEVER 17 (BASIC MANOEUVRES)

N - Neutral A - Bucket folding B - Boom lowering C - Bucket opening D - Boom raising

RWA00600

RWA00610

If the levers are operated in directions that are inclin ed with respect to the machine axis, simultaneous movements propor tional to the angl e of inclination ar e obtained, sin ce the two hydraulic distributors corresp onding to each single function are engaged at the same time.

LEVER 16 (COMBINED MANOEUVRES)

N - Neutral A - Arm opening - Boom swing to the left B - Arm opening - Boom swing to the right C - Arm folding - Boom swing to the right D - Arm folding - Boom swing to the left

LEVER 17 (COMBINED MANOEUVRES)

N - Neutral A - Boom lowering - Bucket folding B - Boom lowering - Bucket opening C - Boom raising - Bucket opening D - Boom raising - Bucket folding

RWA00630

RWA00620

KOMATSU SYSTEM CONTROLS

INSTRUMENTS AND CONTROLS

LEVER 16 (BASIC MANOEUVRES)

N - Neutral A - Boom swing to the left B - Boom lowering C - Boom swing to the right D - Boom raising

LEVER 17 (BASIC MANOEUVRES)

N - Neutral A - Bucket folding B - Arm opening C - Bucket opening D - Arm folding

RWA00560

RWA00570

LEVER 16 (COMBINED MANOEUVRES)

N - Neutral A - Boom lowering and swing to the left B - Boom lowering and swing to the right C - Boom raising and swing to the right D - Boom raising and swing to the left

LEVER 17 (COMBINED MANOEUVRES)

N - Neutral A - Arm opening - bucket folding B - Arm opening - bucket opening C - Arm folding - bucket opening D - Arm folding - bucket folding

RWA00590

RWA00580

INSTRUMENTS AND CONTROLS

“X” SYSTEM CONTROLS

LEVER 16 (BASIC MANOEUVRES)

N - Neutral A - Boom swing to the left B - Boom lowering C - Boom swing to the right D - Boom raising

LEVER 17 (BASIC MANOEUVRES)

N - Neutral A - Arm opening B - Bucket opening C - Arm folding D - Bucket folding

RWA00650

RWA00640

LEVER 16 (COMBINED MANOEUVRES)

N - Neutral A - Boom raising and swing to the left B - Boom lowering and swing to the left C - Boom lowering and swing to the right D - Boom raising and swing to the right

RWA00660

LEVER 17 (COMBINED MANOEUVRES)

N - Neutral A - Arm opening - bucket folding B - Arm opening - bucket opening C - Arm folding - bucket opening D - Arm folding - bucket folding

RWA00670

18/19 - STABILIZER CONTROL LEVERS

IMPORTANT

☞

IMPORTANT

☞

(Standard version)

• Before moving the machine, make sure that the stabilizers

are completely raised.

INSTRUMENTS AND CONTROLS

• When travelling on roads, raise the stabilizers comple tely

and engage the safety locks.

These levers control the lowering and raising of the machine stabilizers during digging operations.

18/19 - STABILIZER CON TROL SWITCHES

(Version with servo controls)

• Before moving the machine, make sure that the stabilizers

are completely raised.

• When travelling on roads, withdraw the stabilizers com-

pletely and engage the safety locks. Engage also the backhoe control locking device by pressing the switch (27).

RWA35150

RWA37890

These lever switches are positioned on the upper part of the side dashboard and control the lowering and lifting of the machine stabilizers during digging operations. Push the switches (18) and (19) towards the outside of the cab in order to lower both stab ilizers. To lift them, pull the switches (18) and (19) towards the inside of the cab. Both the switches (18) and (19) can be disabled by means of the backhoe control lo cking switch (27). For the con trol locking procedure, see “27. BACKHOE CONTROL LOCKING SWITCH”.

RWA37860

INSTRUMENTS AND CONTROLS

IMPORTANT

☞

20 - STEERING WHEEL ADJUSTMENT LOCKING

LEVER

DANGER

• Adjust the steering wheel while seated in the driving posi-

tion. The machine must be completely still and the engine must be off.

• Before using the machine, make sure that both the steer-

ing wheel and the adjusting lever are completely locked. Non-compliance with thes e instructions may lead to se rious accidents.

This lever is positioned on the left side of the steering wheel and allows the latter to be adjusted according to the physical characteristics of the operator. It is possible to choose among di fferent positions ; for the adjustment, proceed as follows:

1 - After stopping the machine and the engine, turn the lever

(20) anticlockwise to release the steering wheel (see Fig. A).

2 - Adjust the steeri ng whee l by movin g i t forward and backward

until finding the de sired position (s ee Fig. B).?Turn the lever (20) clockwise to lock the steer ing wheel in the des ired position (see Fig. C).

RWA37910

RWA38590

• If the stroke of the lever (20) isn’t sufficient to lock the

steering wheel compl etely, pull the lever (20) as indicated by the arrow (D). At this point, shift the lever (20) to its original position by repeating the operation and turning it clockwise or anticlockwise.

RWA37900

Komatsu WB91R, WB91-93, WB93R, WB93R-2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.1 FOREWORD

1.2 INFORMATION ON SAFETY

1.3 INTRODUCTION

1.3.1 INTENDED USES

1.3.2 IMPROPER OR UNAUTHORIZED USES

1.3.3 MAIN CHARACTERISTICS

1.3.4 RUNNING-IN

1.4 PRODUCT IDENTIFICATION

1.4.1 MACHINE SERIAL NUMBER

1.4.2 MACHINE IDENTIFICATION PLATE

1.4.4 FRONT AXLE SERIAL NUMBER

1.4.5 REAR AXLE SERIAL NUMBER

1.4.6 TRANSMISSION SERIAL NUMBER

1.4.7 CAB SERIAL NUMBER

1.4.8 CANOPY SERIAL NUMBER (if provided)

1.4.9 SERIAL NUMBERS AND DEALER’S ADDRESS

TABLE OF CONTENTS

2.1 SAFETY, NOISE AND VIBRATION PLATES

2.1.1 POSITION OF THE SAFETY PLATES

2.1.2 PICTOGRAMS AND RELEVANT MEANINGS

2.1.4 POSITION OF THE NOISE PLA TES ON MACHINES WITH CAB (model WB93R-2)

2.1.5 VIBRATIONS TO WHICH THE OPERATOR IS SUBJECTED

2.2 GENERAL PRECAUTIONS

2.2.1 GENERAL SAFETY RULES

2.2.2 SAFETY DEVICES AND GUARDS

2.2.4 UNAUTHORIZED MODIFICATIONS

2.2.5 LEAVING THE OPERATOR’S SEAT

2.2.8 PREVENTING FIRES DUE TO FUEL AND OIL

2.2.9 PREVENTING BURNS

2.2.11 PREVENTING D AMAGE CA USED BY THE WORK EQUIPMENT

2.2.12 FIRE EXTINGUISHERS AND FIRST AID KIT

2.2.13 PRECA U TIONS CONCERNING THE CAB STRUCTURE

2.2.14 PRECAUTIONS CONCERNING THE EQUIPMENT

2.3 PRECAUTIONS TO BE TAKEN BEFORE STARTING THE ENGINE

2.3.1 SAFETY ON THE WORK SITE

2.3.2 FIRE PREVENTION

2.3.4 ROOM VENTILATION

2.3.5 CLEANING WINDOWS, MIRRORS AND LIGHTS - CHECKING THE WINDSHIELD WIPER BLADES AND THE BULBS

2.4 PRECAUTIONS TO BE TAKEN WHEN WORKING

2.4.1 STARTING THE ENGINE

2.4.2 RULES FOR ROAD TRAVEL

2.4.4 MOVING THE MACHINE

2.4.5 WORKING ON SLOPES

2.4.6 PREVENTING ELECTROCUTION

2.4.7 VISIBILITY

2.4.8 WORKING ON ICY OR SNOW-COVERED SURFACES

2.4.9 PREVENTING DAMAGE CAUSED BY THE WORK EQUIPMENT

2.4.10 WORKING ON LOOSE GROUND

2.4.11 PARKING THE MACHINE

2.5 TRANSPORTING THE MACHINE ON MOTOR VEHICLES

2.5.1 LOADING AND UNLOADING

2.5.2 TRANSPORT

2.6 BATTERY

2.6.1 PREVENTING RISKS THAT MAY BE DUE TO THE BATTERY

2.7 PRECAUTIONS FOR THE REMOVAL

2.8 PRECAUTIONS FOR MAINTENANCE

2.8.1 WARNING PLATES

2.8.2 TOOLS

2.8.3 PERSONNEL

2.8.4 EQUIPMENT

2.8.5 WORKING UNDER THE MACHINE

2.8.6 CLEANING THE MACHINE

2.8.7 USE OF THE ENGINE DURING MAINTENANCE OPERATIONS

2.8.8 PERIODICAL CHANGE OF THE PARTS THAT ARE CRITICAL FOR SAFETY

2.8.10 RULES TO BE FOLLOWED DURING FUEL OR OIL TOPPING UP

2.8.11 CHECKING THE COOLANT LEVEL IN THE RADIATOR

2.8.12 USING LAMPS

2.8.13 PRECAUTIONS CONCERNING THE BATTERY AND THE ALTERNATOR

2.8.14 PRECAUTIONS CONCERNING THE STARTER

2.8.15 HANDLING HIGH-PRESSURE PIPES

2.8.16 PRECAUTIONS T O BE TAKEN WHEN HANDLING HIGH-PRESSURE OIL

2.8.18 COOLING FAN AND BELT

2.8.19 WASTE MATERIALS

2.8.20 PRECA UTIONS TO BE T AKEN WHEN INFLATING TYRES

THIS PAGE WAS INTENTIONALLY LEFT EMPTY

3.1 S AFETY LOCKS