Maeda CC423S-1 Operation Manual

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OPERATION MANUAL

CRAWLER CRANE

542E-OM1803-00

ＣＣ４２３Ｓ

－１

Serial No. 21001 and up

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

MAEDA has Operation Manual written in some other languages. If a foreign language manual is necessary, contact your local distributor for availability.

NOTICE

CONTENTS

Item

INTRODUCTION

1. INTRODUCTION 2

2. FOR SAFE USE OF THE MACHINE 3

3. MACHINE OVERVIEW 4

3.1 SPECIFIED OPERATIONS 4

3.2 MACHINE STRUCTURE 4

3.3 MACHINE FUNCTIONS 5

4. QUALIFICATIONS FOR OPERATION 6

4.1 QUALIFICATIONS FOR CRANE OPERATION 6

5. TERMINOLOGY 7

5.1 TERMS AND DEFINITIONS 7

5.2 DIAGRAM OF WORKING RADIUS AND LIFTING HEIGHT 8

5.3 RATED TOTAL LOAD CHART 9

6. NECESSARY INFORMATION FOR SERVICING 12

SAFETY

1. BASIC PRECAUTIONS 16

1.1 PRECAUTIONS BEFORE STARTING WORK 16

1.2 PREPARING FOR SAFE OPERATION 17

1.3 PRECAUTIONS FOR FIRE PREVENTION 19

1.4 CAUTIONS IN GETTING ON AND OFF THE MACHINE 20

1.5 OTHER PRECAUTIONS 21

2. OPERATION RELATED PRECAUTIONS 22

2.1 PRECAUTIONS ON WORK SITE 22

2.2 CAUTIONS WHEN STARTING ENGINE 25

2.3 PRECAUTIONS FOR STARTING CARRIER AND OPERATING CRANE 27

2.4 CAUTIONS DURING CRANE OPERATION 30

3. TRANSPORT PRECAUTIONS 38

4. TOWING PRECAUTIONS 39

5. MAINTENANCE PRECAUTIONS 40

5.1 PRECAUTIONS BEFORE MAINTENANCE 40

5.2 PRECAUTIONS DURING MAINTENANCE 43

6. SAFETY LABEL LOCATIONS 47

Page

Item

OPERATION

1. NAME OF EACH SECTION 56

1.1 MACHINE UNITS 56

1.2 CRANE OPERATION UNITS 57

2. EXPLANATION OF EACH EQUIPMENT 58

2.1 MACHINE MONITOR 58

2.1.1 MONITOR BASIC ACTION AND DISPLAY 60

2.1.2 WARNING DISPLAY 66

2.2 SWITCHES 67

2.3 MOMENT LIMITER (OVERLOAD DETECTOR) 71

2.3.1 CONFIGURATION OF MOMENT LIMITER 71

2.3.2 FUNCTIONS OF MOMENT LIMITER 72

2.3.3 MOMENT LIMITER OPERATION AND CANCELLING (RECOVERY) 74

2.3.4 MOMENT LIMITER FUNCTIONS 77

2.3.5 MAINTENANCE SWITCH 85

2.4 OVER-HOISTING PREVENTION DEVICE 86

2.5 OPERATION LEVERS AND PEDALS 87

2.6 LOCKING COVER 90

2.7 ENGINE BONNET 91

2.8 FUSE 93

2.9 FUSIBLE LINK 94

2.10 HOLDER FOR OPERATION MANUAL 94

2.11 GREASE GUN HOLDER 94

3. OPERATION 95

3.1 INSPECTING AND ADJUSTING BEFORE STARTING ENGINE 95

3.1.1 VISIBLE CHECKS 95

3.1.2 PRE-OPERATION INSPECTION 98

3.1.3 OPERATIONS AND CHECKS BEFORE STARTING ENGINE 108

3.1.4 INSPECTION AFTER STARTING ENGINE 109

3.2 STARTING ENGINE 112

3.2.1 NORMAL STARTING OF ENGINE 112

3.2.2 STARTING ENGINE IN COLD ENVIRONMENT 113

3.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE 114

3.3.1 WARM-UP 114

3.4 STOPPING ENGINE 116

3.5 BREAK-IN OPERATION 117

3.6 MACHINE TRAVELLING POSTURE 118

3.7 STARTING (FORWARD AND BACKWARD)/STOPPING THE MACHINE 119

3.8 CHANGING DIRECTION OF THE MACHINE 123

3.9 SLEWING THE MACHINE 125

3.10 CAUTIONS BEFORE CRANE OPERATION 126

3.11 OPERATION BEFORE CRANE WORK 128

3.12 CRANE OPERATION POSTURE 130

Page

Item

3.13 HOISTING AND LOWERING 131

3.13.1 NORMAL HOISTING AND LOWERING 131

3.13.2 HOISTING OPERATION WITH HOOK STOWAGE SWITCH 132

3.14 BOOM DERRICKING OPERATION 133

3.15 BOOM TELESCOPING OPERATION 134

3.16 SLEWING OPERATION 135

3.17 CRANE STOWAGE OPERATION 136

3.17.1 CRANE STOWAGE OPERATION AT THE TIME OF SIMPLE STOWAGE OF HOOK BLOCK

3.17.2 CRANE STOWAGE OPERATION AT THE TIME OF NORMAL STOWAGE OF HOOK BLOCK

3.18 PROHIBITED OPERATIONS DURING CRANE WORK 141

3.19 PERFORM TRAVELLING WITH HOISTED LOAD 143

3.19.1 PRECAUTIONS FOR TRAVELLING WITH HOISTED LOAD 143

3.19.2 OPERATION POSTURE DURING TRAVELLING HOIST 144

3.19.3 OPERATION OF TRAVELLING HOIST WORK 145

3.19.4 CANCEL OPERATION OF TRAVELLING HOIST OPERATION POSTURE 145

3.20 BLADE OPERATION 146

3.20.1 PRECAUTIONS WHEN USING THE BLADE 146

3.20.2 BLADE OPERATION 147

3.20.3 WORK THAT CAN BE DONE WITH THE BLADE 147

3.21 PARKING THE MACHINE 148

3.22 INSPECTION AND CHECK AFTER COMPLETING WORK 149

3.22.1 AFTER STOPPING ENGINE 149

3.22.2 LOCKING 149

3.23 CAUTIONS IN DRIVING 150

4. HANDLING WIRE ROPE 153

4.1 CRITERIA FOR WIRE ROPE REPLACEMENT 153

4.2 WINCH WIRE ROPE REEVING SYSTEM AND GROSS RATED LOAD 155

4.3 CORRECTIVE ACTIONS AGAINST TWISTED WIRE ROPE 156

5. TRANSPORTATION 159

5.1 LOADING/UNLOADING 160

5.1.1 LOADING 161

5.1.2 FIXING THE MACHINE 163

5.1.3 UNLOADING 164

5.2 HOISTING MACHINE 165

5.2.1 HOISTING MACHINE WITH BOOM LOWERED 165

5.2.2 HOISTING MACHINE WITH BOOM RAISED 167

6. HANDLING MACHINE IN COLD ENVIRONMENT 169

6.1 PREPARING FOR LOW TEMPERATURE 169

7. LONG-TERM STORAGE 172

7.1 BEFORE STORING MACHINE 172

7.2 DURING STORAGE 172

7.3 AFTER STORAGE 172

Page

136 139

iii

Item

8. TROUBLESHOOTING 173

8.1 WHEN FUEL RUNS OUT 173

8.2 PHENOMENON WHICH IS NOT A FAULT 173

8.3 WHEN BATTERY HAS DISCHARGED 174

8.3.1 BATTERY HANDLING PRECAUTIONS 174

8.3.2 REMOVING/INSTALLING BATTERY 175

8.3.3 CAUTIONS IN CHARGING BATTERY 176

8.3.4 STARTING ENGINE WITH BOOSTER CABLE 177

8.3.5 STARTING ENGINE 178

8.4 WHEN THESE PHENOMENA HAPPEN 179

8.4.1 ELECTRICAL COMPONENTS 179

8.4.2 MACHINE BODY 179

8.4.3 ENGINE 180

8.4.4 MOMENT LIMITER COMPONENTS 182

8.4.5 OVER-HOISTING PREVENTION DEVICE 182

8.5 LIST OF ERROR CODES 184

INSPECTION AND MAINTENANCE

1. PRECAUTIONS FOR MAINTENANCE 188

2. BASIC MAINTENANCE 191

3. LEGAL INSPECTION 194

4. PERIODIC REPLACEMENT OF IMPORTANT COMPONENTS 195

5. CONSUMABLES 196

6. OTHER REPLACEMENT PARTS 197

7. USE OF FUEL AND LUBRICATING OIL 198

7.1 USE OF FUEL AND LUBRICATING OIL ACCORDING TO TEMPERATURES 198

8. STANDARD TIGHTENING TORQUE 200

8.1 STANDARD TIGHTENING TORQUE LIST 200

9. INSPECTION AND MAINTENANCE LIST 201

10. MAINTENANCE PROCEDURE 203

10.1 FIRST MAINTENANCE OF NEW MACHINE 203

10.1.1 INITIAL 50 HOURS MAINTENANCE 203

10.1.2 INITIAL 500 HOURS MAINTENANCE 203

10.2 PRE-OPERATION INSPECTION 203

10.3 IRREGULAR MAINTENANCE 204

10.4 MAINTENANCE EVERY 50 HOURS 223

10.5 MAINTENANCE EVERY 100 HOURS 225

10.6 MAINTENANCE EVERY 250 HOURS 226

10.7 MAINTENANCE EVERY 500 HOURS 230

10.8 MAINTENANCE EVERY 1000 HOURS 233

10.9 MAINTENANCE EVERY 1500 HOURS 235

10.10 MAINTENANCE EVERY 2000 HOURS 236

10.11 MAINTENANCE EVERY 3000 HOURS 239

Page

187

Item

SPECIFICATIONS

1. PRINCIPAL SPECIFICATIONS LIST 242

2. SPECIFICATION DIMENSIONAL DRAWING 243

3. RATED TOTAL LOAD CHART 244

4. WORKING RADIUS/LIFTING HEIGHT 247

SEARCHER HOOK (OPTION)

1. SAFETY PRECAUTIONS 250

1.1 MOMENT LIMITER SETTINGS 250

1.2 SAFETY LABEL LOCATIONS 251

2. NAMES OF SEARCHER HOOK PARTS 253

3. MONITOR INDICATION 254

4. MOMENT LIMITER OPERATION AND CANCELLING (RECOVERY) 256

5. OPERATION 258

6. INSPECTION AND MAINTENANCE 261

6.1 CONSUMABLES 261

6.2 INSPECTION AND MAINTENANCE LIST 262

6.3 PRE-OPERATION INSPECTION 263

6.3.1 CHECKING BEFORE STARTING ENGINE 263

6.3.2 INSPECTION AFTER STARTING ENGINE 264

7. WORKING RADIUS AND RATED TOTAL LOAD 265

7.1 WORKING RADIUS AND LIFTING HEIGHT CHART FOR SEARCHER HOOK 265

7.2 RATED TOTAL LOAD CHART FOR SEARCHER HOOK 266

Page

241

249

This Page Intentionally Left Blank.

INTRODUCTION

1. INTRODUCTION 2

2. FOR SAFE USE OF THE MACHINE 3

3. MACHINE OVERVIEW 4

4. QUALIFICATIONS FOR OPERATION 6

5. TERMINOLOGY 7

6. NECESSARY INFORMATION FOR SERVICING 12

1. INTRODUCTION

Thank you for purchasing Maeda Crawler Crane CC423S-1. This manual is a guidebook for safe and effective use of this machine. This manual describes the procedures and precautions to follow for proper operation and maintenance of the machine. Many accidents are caused due to failure to observe safety precautions for operation, inspection, and maintenance. Be sure to read this manual and understand the procedures for machine operation, inspection, and maintenance thoroughly before using this machine. Failure to observe the basic precautions described in this manual may lead to serious accidents.

Improper operation of this machine can lead to serious injuries or death. Operators and maintenance personnel must always read this manual prior to operation or maintenance of this machine. Keep this manual in a designated place so that all personnel that work on this machine will read it for reference periodically.

• Avoid operating this machine before understanding this manual thoroughly.

• Keep this manual at hand so that you can read it when necessary.

• If you lose or damage this manual, contact Maeda or our sales service agency immediately to order a new one.

• This manual should always accompany this machine upon transfer of the machine to the next owner. If the machine is resold to a third party without informing us in advance, no warranty whatsoever shall be applicable.

• This manual is based on the data that was available at the time of the creation of the manual. The information of this manual, including maintenance specifications, tightening torque, pressure, measuring method, adjustment value, and illustrations, are subject to change without prior notice due to continuous machine improvement. These changes may affect the machine maintenance procedure. Always obtain the latest information from Maeda or our sales service agency before performing maintenance of this machine.

For safety instructions, refer to “2. For Safe Use of the Machine” on page 3 and “Safety” on page 15 and later.

Storage place of the operation manual Pocket behind the operator seat

2. FOR SAFE USE OF THE MACHINE

This manual classifies the risks into the following three categories for easy understanding of the safety information.

This denotes that there is an imminent hazard which will cause serious

This manual also uses the following indications to provide other precautions for handling the machine and helpful information.

CAUTION

NOTES

The operations, inspections, maintenance and safety precautions for this machine that are outlined in this manual are relevant to specified tasks. It is impossible to anticipate all situations where the machine is used. Thus, the precautions given in this manual and on this machine do not necessarily cover every safety issue. When performing the machine operation, inspection or maintenance in a situation that is not covered by this manual, be sure to take necessary measures and actions for safety on your own. Even in the above case, never attempt work or operations that this manual prohibits you to do.

injury or death. It also provides information on how to avoid such hazard.

This denotes that there is a hazard which can cause serious injury or death. It also provides information on how to avoid such hazard.

This denotes that there is a potential hazard which may cause minor or moderate injury or serious damage to the machine. It also provides information on how to avoid such hazard.

This denotes that failure to properly handle the machine may damage it or shorten its life.

This denotes helpful information.

3. MACHINE OVERVIEW

3.1 SPECIFIED OPERATIONS

This machine is to be used for the following operation(s):

• Crane operation

• Travelling hoist operation This machine is a mobile crane consisting of the upper swiveling body equipped with a boom type crane and the lower crawler type carrier. This self-propelled crane is capable of moving (travelling) in the work site and craning an object weighing up to the rated total load.

3.2 MACHINE STRUCTURE

EXTERNAL VIEW

(1) Carrier (2) Upper slewing body (3) Safety device

In this manual, the front, rear, left and right directions are defined with the basic reference direction that the operator sits on the operator’s seat with the carrier’s sprocket (A) in the rear and viewing the machine’s travelling direction (forward). For the slewing of boom (upper slewing body), the boom slewing directions (clockwise for right and counterclockwise for left) are determined as viewed from above the machine.

This machine is composed of the following units and systems:

CARRIER

Consists of the travelling system.

UPPER SLEWING BODY (CRANE)

Consists of the engine, travelling operation unit, crane operation unit, boom telescoping unit, boom derricking unit, slewing unit, hook block and winch system.

SAFETY DEVICE

Comprises the over-hoisting prevention device, over-lowering prevention device, overload preventive device, slinging rope detachment protector, hydraulic safety valve, telescoping cylinder hydraulic automatic locking device, derricking cylinder hydraulic automatic locking device, alarm buzzer, machine body inclination alarm, levelling instrument (monitor display), tri-colour revolving working status lamp, travelling crane stop, travelling automatic stop, working radius limiter function, irregular winding prevention roller, crane operation recording function.

3.3 MACHINE FUNCTIONS

CARRIER

• The carrier is of a crawler type, which facilitates running in rough terrain and soft ground.

• Operating the two travelling levers enables not only travelling direction changes (forward, backward, right and left) but also pivot turns and spin turns.

UPPER SLEWING BODY

• The upper slewing body is allowed to perform a 360 degrees slewing by slewing operation.

• Through the combined use of the telescopic boom, derrick and slewing systems besides the winch system, the crane can raise and lower the hook block to move the lifted object to the desired position within the rated total load and the specified working envelope.

4. QUALIFICATION FOR OPERATION

• A high incidence of occupational accidents in crane operation has been reported. Be aware that experienced engineers are also no exception.

• Warnings and precautions defined in this manual shall be observed for safety assurance during operation of the machine.

4.1 QUALIFICATION FOR CRANE OPERATION

Only personnel that have obtained the required license or training stipulated by laws and regulations applicable to the place of use are qualified to operate this machine. Contact the relevant government office or our sales service agency for further information.

5. TERMINOLOGY

5.1 TERMS AND DEFINITIONS

RATED TOTAL LOAD

The maximum load that can be applied according to the boom length and angle. The load includes the mass (weight) of hoisting accessories (hooks) and slinging ropes.

RATED LOAD

A load derived by subtracting the mass (weight) of hoisting accessories (hooks) and slinging ropes from the rated total load, and can be hoisted.

WORKING RADIUS

A horizontal distance between the axis of slewing and the hook centre.

BOOM LENGTH

A distance between the boom primary pin and the sheave pin at the tip of the boom.

DERRICKING ANGLE

An angle which the boom forms with the horizon.

LIFTING HEIGHT ABOVE GROUND

A vertical distance between the hook bottom end and the ground with the hook raised to the upper limit.

5.2 DIAGRAM OF WORKING RADIUS AND LIFTING HEIGHT

• The working radius/lifting height shows relationship between working radius, boom angle and lifting height above ground of this machine with no load hoisted, and deflection of the boom is not included.

• Stage “3” in the diagram of working radius and lifting height indicates that one half portion of the “

1. In the figure on the right, point A denotes a boom angle and point B denotes a lifting height above ground. The same working radius applies to point A and point B.

2. The “diagram of working radius and lifting height” shows the relationships between the working radius, boom angle and lifting height at no load, allowing for no deflection in the boom. A deflection occurs in the boom when an object is hoisted, which causes the working radius to widen slightly. The rated total load decreases with increase in the working radius. Actual crane operation requires the planning of work, allowing for sufficient clearance more than that provided in the diagram.

mark” is extruding from the 2nd stage boom.

5.3 RATED TOTAL LOAD CHART

• Rated total load chart is based on level, hard ground.

• The rated total load in the chart is based on actual working radius with deflection which occurs in the boom under load.

• When boom (2) is extended even for a minimal extent, perform the work within the capacity indicated in the column of “boom (2)”.

• When boom (3) is extended even for a minimal extent, perform the work within the capacity indicated in the column of “boom (3)”.

• When more than one-half of the “

mark” of boom (3) is exposed from boom (2), perform

the work within the capacity indicated in the column of “boom (4)”.

• If working radius exceeds the value of Working Radius column in the chart by any extent, work should be performed within the rated total load in the next column of Working Radius.

• The rated total load chart indicates the load including the mass of hoisting accessories (hook mass: 30 kg).

CC423S-1 RATED TOTAL LOAD CHART

Working

radius

(m)

(1) 3.18 m boom (2) 5.03 m boom

Stationary

hoist

Travelling

hoist

Stationary

hoist

Travelling

hoist

(3) 6.87 m

boom

Stationary

hoist

(4) 8.71 m

boom

Stationary

hoist

1.50 2930 1465 2930 1465 1870 1190

2.00 1730 865 1710 855 1710 1190

2.50 1200 600 1190 595 1190 1190

2.85 980 490 980 490 980 980

3.00 900 450 900 900

3.50 720 360 720 720

4.00 600 300 600 600

4.50 500 250 500 500

4.70 460 230 460 460

5.00 430 430

5.50 370 370

6.00 330 330

6.54 290 290

7.00 260

7.50 235

8.00 215

8.38 200

Boom angle

range (degrees)

0 – 42.9 0 – 64.2 0 – 72.3 0 – 76.5

The rated total load chart provides the maximum loads that the crane is capable of hoisting depending on boom length, for each working radius.

Boom length

The headings in the rated total load chart, “3.18 m boom (1)”, “5.03 m boom (2)”, “6.87 m boom (3)” and “8.71 m boom (4)” denote the states displayed in the following figures:

1. “3.18 m boom (1)”: All the booms are retracted.

2. “5.03 m boom (2)”: Booms (3) and (4) are retracted, with boom (2) fully extended. If boom (2) is extended even to a small extent, work should be performed in accordance with the values of this column.

3. “6.87 m boom (3)”: With boom (2) fully extended, booms (3) and (4) are in a state of intermediate extension, where half of the “

mark” is exposed from boom (2).

If booms (3) and (4) are extended even to a small extent, work should be performed in accordance with the values of this column.

4. “8.71 m boom (4)”: All the booms are fully extended. If more than half of the “

mark” of boom (3) is exposed from boom (2), work should be

performed in accordance with the values of this column.

6. NECESSARY INFORMATION FOR SERVICING

When arranging servicing of the machine, or when ordering parts, please contact the Company or our sales service agency with the following information.

Machine ID plate

This is located on the lower right part of the canopy.

Engine No. ID plate location

This is located on the upper surface of the engine.

EPA ID plate and location

This is located on the upper surface of the engine.

EPA: Environmental Protection Agency

(US Environmental Protection Agency)

Hour meter location

This is displayed on the machine monitor.

This Page Intentionally Left Blank.

SAFETY

1. BASIC PRECAUTIONS 16

2. OPERATION RELATED PRECAUTIONS 22

3. TRANSPORT PRECAUTIONS 38

4. TOWING PRECAUTIONS 39

5. MAINTENANCE PRECAUTIONS 40

6. SAFETY LABEL LOCATIONS 47

All the safety precautions defined in this manual should always be read and observed. Failure to follow the safety precautions can cause serious personal injury or death.

1. BASIC PRECAUTIONS

Incorrect operation and servicing may result in serious bodily accidents. Before starting operation and

servicing, read this manual and safety labels to observe their warnings and precautions.

1.1 PRECAUTIONS BEFORE STARTING WORK

OBSERVE THE MANUAL AND SAFETY LABELS

• Read well and understand this manual as well as the safety labels attached to various parts of this machine. Attempt to drive/operate without understanding fully may result in wrong operation that may cause personal or equipment accidents.

• Fully understand the proper use and inspection/maintenance procedures, and perform the work safely.

• Make sure this manual and the safety labels attached to various parts of this machine are legible all the time.

Whenever illegibility or loss occurs, order us or our sales service

agency and put the safety label back to the original location.

QUALIFICATION FOR OPERATION

• The operators of this machine are required to have adequate qualification.

Be sure to acquire the qualification before engage in the operation.

See “Introduction 4. Qualifications for Operation” for details of the operational qualification.

• When performing operations using this machine, be sure to carry the “mobile crane operator’s license”

or the “completion certificate of skill training course for the operation of light duty mobile cranes all the time. Also, when performing a slinging operation, always carry the “completion certificate of skill training course for slinging operation”.

• The operators are requested to receive education and training of the handling methods and other

subjects at the office, and obtain sufficient operation skills before work.

COMMIT TO SAFE OPERATION

• Follow the instructions and signs given by the manager and work supervisor, and observe safety first during work.

• Follow the crane work basics during work.

• Always make sure to carry out inspections before using this machine.

• Do not work under bad weather for instance strong wind, thunder or mist.

• Do not drive under any condition when you are overtired, under the influence of alcohol or after taking soporific drugs.

• Follow all of the workplace rules, safety regulations and operation method sequences during operations and inspection/maintenance.

• Pay attention to surrounding conditions and pedestrians all the time during operation.

Whenever pedestrian approaches unwarily, abort the operation once, and take a measure such as

issuing a warning.

• When operating, be mentally prepared for unexpected situation so that you can take measures immediately.

• Never attempt any use out of the capabilities and purposes described in this manual under any circumstances.

• Observe the designated rated total load and work range when operating.

• Never attempt inattentive driving, harsh driving or awkward operation under any circumstances.

• Pull out the key when leaving the operator’s seat.

1.2 PREPARING FOR SAFE OPERATION

PROVIDE SAFETY DEVICES FOR SURE

• Check that all guards, covers and mirrors are attached properly. Repair immediately if damaged.

• Understand how to use the safety devices well and use properly.

• Do not detach the safety devices under any circumstances. Keep control to achieve proper function all the time.

• Improper use of the safety devices may lead to serious accidents.

• Do not rely too much on the safety devices whilst operating.

PREPARE FOR ABNORMALITY

• Make sure to carry out inspections and maintenances, and make an effort to prevent accidents before happening.

• Whenever you feel an abnormality in the machine, abort the operation immediately, ensure safety and report to the manager.

• Assign in advance who takes which solution to prevent secondary accident.

• Never operate the machine when fuel or hydraulic oil is leaking from the machine. Report the manager about the abnormality, and repair the leaking point of the fuel/hydraulic oil completely before use.

The fuel for this machine is diesel fuel. Be especially careful for

the presence of fuel leak.

• Before leaving the machine, lower the hoisted load to the ground, stop the engine and pull out the starter switch key.

TEMPORARY STORAGE WHEN ABNORMALITY IS FOUND WITHIN MACHINE

In case the machine is found with an abnormality and is therefore stored temporarily waiting for service, apply following measures to notify all persons in the office that “the use is prohibited due to failure.”

• Put on warning tags on the operation lever and other applicable parts.

Write clearly the information such as abnormality contents, name

and contact of the storage manager, and the term of storage.

• Keep it immovable when parking by, for instance, putting the blocks on the rubber tracks as pawls.

• Pull out the engine key and keep it with you.

WEAR PROTECTIVE EQUIPMENT AND CLOTHES SUITABLE FOR WORK

• Always put on a helmet and safety shoes. Be sure to wear protective equipment appropriate to the work such as goggles, masks, gloves, ear protection and safety harnesses.

• Long hair that protrudes from the helmet is in danger of getting caught in the machine, so take precautions so that it will not become entangled.

• Do not wear loose garments or accessories as these may get caught on operation levers, the start switch, the emergency stop switch or other protruding parts, leading to unexpected movement of the machine.

• Check the functioning of all protective equipment before use.

USE OF MACHINE THAT WAS RENTED OR PREVIOUSLY USED BY SOMEONE ELSE

Check the following subjects in writing before using any machine that was rented or previously used by someone else. In addition, check the inspection record table for the maintenance conditions such as the periodic inspections. (1) Crane capacity (2) Crane maintenance conditions (3) Behaviors and disadvantages unique to the crane (4) Other subjects that require attention while operating

(a) Operating condition of brakes, clutch and others (b) Presence/absence and lighting condition check-up of lighting and rotating lamps (c) Operating condition of hook, winch, boom and others

ALWAYS KEEP THE MACHINE CLEAN

• If the machine remains contaminated with soil, sand, oil and grease, it may cause slipping, tripping or tumbling when getting on the machine or maintenance servicing. Thus, wipe off the soil, sand, oil and grease sticking to the machine to keep it clean all the time.

• When washing the machine with water or cleaning it with steam, prevent its electrical devices from being directly splashed with water. Water entering the electrical system is dangerous and will cause electrical devices to malfunction resulting in faulty or improper operations. If the machine malfunctions, it may behave unexpectedly, resulting in serious injury.

CLEAN AND TIDY UP THE OPERATOR’S CABIN.

• Before getting in the cabin, wipe off shoe soles to remove dirt, oil and grease. Stepping on the pedals with shoes that are contaminated with dirt, oil and grease may cause slipping, resulting in an accident.

• Do not leave parts or tools in the operator’s cabin. The parts and tools left in the cabin may cause unexpected actions, resulting in serious injury.

• Do not attach suction cups to the window glass. It may work as a lens to cause fire.

• Do not bring any dangerous substances (such as combustibles and explosives) in the cabin.

• Do not use a mobile phone during running or operating. It may disturb operations, resulting in serious injury.

PROVISION OF FIRE EXTINGUISHER AND FIRST AID BOX

Always observe the following to prepare for injuries and fires.

• To prepare in case of fire, decide on a location and install a fire extinguisher, and make sure to read the label for terms of usage.

• Decide the location to store the first aid box. In addition, inspect the first aid box periodically and replenish the contents as necessary.

• Decide the measures to take upon an injury or fire accident.

• Decide how to contact the emergency address (for instance the emergency physician, ambulance or fire department), and put up the contact address at designated position so that anyone can make the contact.

1.3 PRECAUTIONS FOR FIRE PREVENTION

WHAT TO DO IF A FIRE OCCURS

• Turn the starter switch OFF to stop the engine.

• Get out of the machine by using a handrail and steps.

• Do not jump off the machine. You may fall and get hurt.

PREVENTING FIRE

• Fire caused by fuel, oil, anti-freezing fluid, or wind-washer liquid

Attempt to let a fire approach the fuel, oil, anti-freezing fluid, or

wind-washer liquid may result in catching fire. Strictly observe the following.

• Do not smoke or use fire near the machine.

• Before refueling, be sure to stop the engine.

• Do not leave the site when replenishing the fuel or oil.

• Close and securely tighten the cap of fuel tank and hydraulic oil tank.

• Do not spill fuel on an overheated surface and parts of electric system.

• After refueling, cleanly wipe off spilt fuel and oil.

• Put rags and other combustibles smeared with oil in a safe container and store it in a safe place.

• Use incombustible cleaning oil for the objects such as the components, and do not use diesel fuel, petrol or anything else that may catch fire.

• Do not weld or gas flame-cut piping and tubing containing flammable solutions.

• Store the fuel and oil in a specified well-ventilated location and prohibit public access.

• Before performing grinding or welding of the machine, move inflammables to a safe place.

• Fire due to deposition or adherence of combustibles.

• If any of such combustibles as dead leaves, chips, paper litters, and charcoal dust is deposited on or sticking to the peripheral area of engine exhaust manifold, muffler, battery or under-cover, remove it.

• To prevent fire caused by bonfire sparks or other types of fire that can be caught, remove such combustibles as dead leaves, chips, paper litters, and charcoal dust that may be deposited on or sticking to the peripheral area of cooling units (radiator and oil cooler).

• Fire originating from electric wiring

Fire may be incurred by a short-circuit of electric system. Strictly

observe the following.

• Keep every connection of electric wiring clean and fix it securely.

• Check for any loosening or damage of electric wiring on a daily basis, and if any loosened connector or wiring clamp is found, re-tighten it and repair or replace any damaged electric wiring.

• Fire originating from piping

Check the clamps and cushions of each hose and tubing to ensure

that they are securely fixed. Any loosening may give rise to vibration during operation, rubbing with other parts to damage hose, or spouting of high pressure oil, resulting in fire or physical injury.

• Explosion triggered by lighting fixture

• When inspecting fuel, oil, battery electrolyte and coolant water, use a lighting apparatus of explosion-proof specifications.

• When disconnecting power source from the machine, follow the instructions described in this manual.

1.4 CAUTIONS IN GETTING ON AND OFF THE MACHINE

USE A HANDRAIL AND STEPS WHEN GETTING ON AN OFF THE MACHINE

When getting on and off the machine, be sure to observe the following precautions in order to prevent physical accidents such as slipping and falling or tumbling.

• Use the arrow-marked handrails and steps shown in the figure at the right when getting on and off the machine.

• When getting on and off the machine, always face the machine, allow the three parts of limbs (both feet and a hand, or a foot and both hands) to come into contact with the hand rails and steps to hold your body.

• Before getting on and off the machine, check the handrails and steps for any damage or loosening, and for any oil or dirt sticking to the machine surface. When oil or dirt is deposited, do not fail to thoroughly clean it so that the surface is not slippery. Repair any damage and re-tighten any loosened bolts.

• Do not grasp operating levers and locking levers when getting on and off the machine.

• Never step on the engine bonnet and cover that are not treated with anti-skidding coating.

• Do not get on or off the machine while holding a tool in hand.

• Do not jump on or off the machine. Also, do not get on or off the moving machine.

• Even if the machine unexpectedly begins to move unmanned, never jump on it to stop it.

CAUTIONS IN STANDING UP FROM THE OPERATOR’S SEAT OR LEAVING THE MACHINE

• Before standing up from the operator’s seat, such as to make adjustments to the operator’s seat, be sure to retract the crane, set the lock lever (1) to “LOCK” position (L) and to stop the engine.

Inadvertently touching operating levers may cause the machine to

suddenly move and invite serious injury.

• When leaving the machine, be sure to retract the crane, set the lock lever (1) to “LOCK” position (L), and stop the engine. Also apply every lock, be sure to bring the key back, and store it in a specified place.

1.5 OTHER PRECAUTIONS

CAUTION AGAINST BEING CAUGHT

In the periphery of the upper slewing body and crane unit, the clearance varies with the motion of derricking cylinder and winch. If being caught in it, serious injury may occur. Keep persons away from all rotating and telescoping sections. Never allow your body or part of it to get in the following gaps:

• Between the boom and the upper slewing body.

• Between the boom and the derricking cylinder.

• Between winch drum and wire rope.

• Between each sheave and wire rope.

REMODELING THE MACHINE IS PROHIBITED

Do not modify the machine without our written consent under any circumstances. Particularly, partial welding of the machine may damage the safety device. The modification raises a safety issue, so consult us or our sales service agency beforehand. We cannot be held responsible for any personal injury or failure caused by remodeling of the machine that was performed without consulting us.

CAUTIONS ON ATTACHMENTS AND OPTIONAL UNITS

• We cannot be held responsible for any personal injury, failures or property damage of attachments and optional units that are not recognized by us.

• Installing an attachment or optional units may give rise to safety and legal issues, and thus the customer is kindly requested to consult with us or our sales service agency beforehand.

• Depending on the combination of attachments and optional units they may cause interference with operating cabin and machine parts. Interference with the machine during operation may cause serious injury. Check to ensure that the attachments and optional units to be used would interfere with the machine, and use them within the interference-free range.

• Never fail to read the descriptions on the attachments and optional units given in the instruction manual of the installed attachment as well as this manual.

CAUTIONS ON THE CANOPY WINDOW

Due to their resin construction, when the ceiling window or right side window is scarred, visibility is impaired and the probability of breakage rises. Replace the scarred ceiling window glass at an early stage. Leaving the scars increases the risk of breakage by any object falling onto the ceiling window, resulting in injury.

CAUTIONS ON RUNNING THE ENGINE INDOORS

To prevent the risk of petrol poisoning from starting the engine/handling fuel and cleaning oil/painting indoors or at a location with bad ventilation, open the windows and exit doors. If the ventilation is insufficient even after opening the windows and exit doors, set up a ventilation fan.

2. OPERATION RELATED PRECAUTIONS

2.1 PRECAUTIONS ON WORK SITE

SURVEY AND SAFETY ASSURANCE OF WORK SITE

A number of risks that may cause serious injury are imbedded in a work site. Before starting work, check

the following matters beforehand to ensure that no danger is present at the work site:

• When working near straw-thatched roofs, dead leaves or dead grass, beware of those fire-catching object.

• Investigate the ground and road surface condition of the work site and decide the best working method. Do not operate the machine at a site where risk of landslide or rock fall exists.

• Flatten the inclination of the work site before starting work.

• When working over the roadway, enforce “keep out” by, for instance, assigning guides or surrounding the site by barriers, and ensure the safety of the traffic vehicles and pedestrians.

• Enforce “keep out” to prevent people from entering the work site and apply measures to prevent people from approaching. Attempt to approach the moving machine may result in pinching or hard collision by contact, and may result in serious accidents and deaths.

• When running on a shallow bottom stream or weak ground, examine the water depth, water flow velocity as well as ground condition and land features in advance in order to avoid hazardous place for travelling and operation.

• The ground of a zone adjacent to a cliff, road shoulder, and deep ditch is likely to be loosened, and thus it should be avoided for running and performing operation. The ground in such a zone may be collapsed by the mass and/or vibration of the machine, which may trip or fall. Be especially careful after rain, use of dynamite, or earthquakes, as the ground will be unstable.

• The ground of an area near an earth fill or in the vicinity of a dug gutter may be collapsed by the mass and/or vibration of the machine, resulting in the trip or fall of the machine. Before starting operation, take necessary measures to make the ground intact and safe.

SECURING VISION

Running and operating in places with poor visibility prevent the operator from detecting hazards around the machine and recognizing work site status, and thus may cause serious injury. When running and operating the machine in place with poor visibility, strictly observe the following:

• If adequate view cannot be secured, deploy personnel as a marshaller as required. In that case, limit the number of signaling marshaller to one person.

• In a dark place, turn on the working light and head lamps equipped with the machine, and use additional lighting devices as required to light up the work site.

• When visibility is spoiled by fog, snow, rain or sand dust, stop the operation.

• If the mirrors mounted on the machine are contaminated, clean them and adjust the field of view to secure visibility.

RECOGNISING THE SIGNAL OF MARSHALLERS AND STREET SIGNS

• To ensure the identification of weak road shoulder and ground, install sign boards. Further, for a place with poor visibility, appoint marshaller as required. In that case, limit the number of signaling marshaller to one person.

The operator should pay attention to sign boards and follow the marshaller’s instructions.

• All the personnel involved should understand the meaning of every signal, sign and sign board.

BEWARE OF ELECTRICAL CABLE ABOVE

• Do not let the machine touch the electrical cables above.

High voltage cables may also inflict electrical shock by close

proximity.

• Slinging operators are likely to suffer electrical shocks.

Always observe the following to prevent accidents.

• If the boom or the wire ropes may contact an electrical cable in the workplace, consult the electricity company and make sure that the measures (for instance placement of a guard personnel or application of wrap tubes and warning tags to the electrical cable) stipulated by the related regulations are taken before starting work.

• Put on rubber soled shoes and rubber gloves, and be careful that the body parts unprotected by rubber or other insulation do not contact the wire rope or the machine frame.

• Place a guide and let them watch so that the boom, wire rope or machine frame does not go near the electrical cable too much.

Before doing so, decide the emergency signs and other

necessities.

• Ask the electricity company for the voltage in the electrical cables at the work site.

• Keep a safe distance shown in the following table between the boom/machine frame and electrical cables.

(Distribution cable)

Low voltage

Special voltage

(Power cable)

Voltage of

Electrical Cable

100/200 V 2 m

6,600 V 2 m 22,000 V 3 m 66,000 V 4 m

154,000 V 5 m 187,000 V 6 m 275,000 V 7 m 500,000 V 11 m

Minimum Safe

Distance

MEASURES WHEN ELECTRIC CHARGE ACCIDENT OCCURS

If an electric charge accident occurs, react calmly and take measures in the following procedure.

1. Report

Immediately report to the electricity company or related management company, and receive instructions for the power transmission stop, emergency procedures and related matters.

2. Evacuation of related personnel from vicinity of machine

Evacuate all personnel, including workers, from the vicinity of the machine to prevent secondary disasters. Personnel who suffered electrical shock by holding a sling rope, guide rope or other conductor when the machine was charged should evacuate by their own effort. Do not try to help personnel affected by electric shock. Otherwise, secondary electrical shock accident will occur.

3. Emergency procedure

In the case of personnel receiving an electric shock due to the machine being electrically charged, do the following: (1) If the machine is operational, immediately move it to a safe location away from the cause of the

electrical charge. Take care not to break or disrupt the distribution power cable.

(2) Move the machine to a safe location, and after making sure the machine is not electrically

charged, take the affected personnel to the hospital.

4. Measure after accident

After the accident, do not reuse as is. Such attempt may cause unexpected accidents and enhances failures. Ask us or our sales service agency for repair.

CAUTIONS WHEN OPERATING CRANE IN LOCATION WITH HIGH OUTPUT MICROWA VE EMISSION

Operating the crane near high output microwave emission equipment such as a radar or TV/radio broadcast antenna causes the crane construction to be exposed to the microwave and generates induced current, therefore is very dangerous. In addition, the mechatronics may become haywire. Establish grounding between the machine frame and the ground when working in such location. In addition, slinging operators are requested to wear rubber boots and rubber gloves since risk of electrical shock by contacting parts such as the hook or wire exists.

BEWARE OF ASBESTOS DUST

Inhalation of asbestos dust may result in lung cancer. This machine does not contain asbestos, but asbestos may be found in the wall, ceiling or other construction locations within the work site of this machine. In addition, be careful of the following when working with a material that may contain asbestos.

• Put on designated dust free mask and/or other protection equipment where necessary.

• Do not use compressed air for cleaning.

• Spray water when cleaning to prevent airborne asbestos dust.

• Always work at windward location when operating the machine at a site that may contain asbestos dust.

• Do not allow unauthorized personnel to approach the work site.

• Strictly observe the assigned rules related to the work site and environmental standards.

2.2 CAUTIONS WHEN STARTING ENGINE

PAY ATTENTION TO WARNING SIGNS

When warning sign “DANGER. Do NOT operate” is put up, the machine is being inspected and under maintenance. Do not start the engine and refrain from touching operating levers. Disregarding the warning sign to operate the machine may give rise to the danger of involving the maintenance personnel into the rotating parts or movable parts of the machine, resulting in serious injury.

INSPECTING AND ADJUSTING BEFORE STARTING ENGINE

Prior to starting the engine at the beginning of the day, perform items under “Operation 3.1 Inspections and Adjustments Before Starting the Engine” and conduct the following inspections. Omitting these inspections may cause serious bodily accidents.

• Never fail to execute the inspection before starting work.

• Remove the contamination on the window glass surface to secure good view.

• Clean the lens surface of head lamps and working lights and ensure that they are properly lit.

• Check the coolant water level, fuel level, engine oil pan level, air cleaner for any clogging and electric wiring for any damage.

• Adjust the operator’s seat to the operator’s posture for easy work. Also, check seat belts and their mounting fixtures for any damage or abrasion.

Refer to the descriptions under “Operation 3.1.2 Pre-operation Inspection (Adjusting the Operator’s

Seat)”.

• Adjust the mirrors to the best position for commanding a good view of rear scene from the operator’s seat.

Refer to the descriptions under “Operation 3.1.2 Pre-operation Inspection (Adjustment of Mirrors)”.

• Check pedals for any dirt or foreign matter deposited on their movable parts and ensure that they can function satisfactorily.

• Check instruments to ensure that they function properly and each of the operating levers is in its neutral position.

Always repair if any result of the above is faulty.

CAUTIONS BEFORE STARTING ENGINE

• Make sure nobody is on or under the machine and in its vicinity and nobody or no hazard is found within the boom slewing range.

• Do not allow anyone other than the operator to get on the machine.

• Start the engine only when the operator is sitting on the operator’s seat.

• Check to ensure that each of the operating levers is in its neutral position.

• Check to ensure that lock lever (1) is in the “LOCK” position (L).

• Honk the horn for warning before starting the engine.

• Do not start the engine by short-circuiting the starter circuit. This may cause a fire.

CAUTIONS UNDER COLD WEATHER

• Defrost and remove snow from the slewing gear, boom and winch. Check their movements before starting work.

• Operating the machine without sufficient engine warm-up causes slow response of the machine to the operation of levers and pedals, and thus unexpected motion may occur against the operator’s will. Do not fail to execute the engine warm-up. The engine requires an adequate warm-up time especially in cold climates.

• When the battery electrolyte is frozen, do not recharge the battery or start the engine with another power source. Such act may cause the battery to catch fire or explode. De-freeze the battery electrolyte and check for fluid leak before re-charging or starting the engine by using another power supply.

• After end of the work, wipe off and put on a cover if substances such as condensation, snow or mud are stuck to the wire harness, connector (1), switches, sensors or similar part. If the infiltrated condensation and/or similar substance freeze, the machine may operate improperly upon the next use and cause unexpected accidents.

CAUTIONS WHEN STARTING UP USING BOOSTER CABLE

Wrong booster cable connection method may result in fire, so always observe the following.

• When using a booster cable for engine start, perform the 2-person operation by one person on the operator’s seat and another on the battery side.

• When starting the engine using other machine, be careful to prevent contact between the normal machine and broken machine.

• Keep the starter switch key of both the normal machine and the broken machine in “OFF” position when the booster cable is connected.

• Do not connect to wrong side [connecting (+) to (−), (−) to (+)] when connecting the booster cable.

• Start connecting from (+) terminal first, but start disconnecting from (−) terminal (ground) first.

• For the final earth connection, connect to the negative (−) terminal of the battery of the failed machine.

Refer to the description under “Operation 8.3.4 Starting Engine

with Booster Cable”.

• Avoid contact between clips of the booster cable, and contact between a clip and the machine when disconnecting the booster cable.

2.3 PRECAUTIONS FOR STARTING CARRIER AND OPERATING CRANE

INSPECTION BEFORE STARTING OPERATION

Omitting the inspections after starting the engine results in delay to discover the machine abnormalities, and may result in accidents and machine damages. Inspection should be carried out in a clear area. No unauthorized persons should be able to approach the machine.

• Ensure that movements of the machine correspond to the symbols on the controller.

• Check the operation status of devices, running status of the machine, winch wind up/down, boom derricking, and crane operating status such as telescoping and slewing.

• Inspect the sound, vibration, heat and odour of the machine, and check for instrument errors, air leaks, oil leaks, fuel leaks, water leaks and other bad factors. Be especially careful for the fuel leak.

• Always repair broken parts whenever an abnormality is found.

Attempt to use without servicing may result in unexpected accidents and/or machine failures.

CAUTIONS ON MACHINE FORWARDING/REVERSING AND SLEWING

Always observe the following to prevent serious injuries and accidental death when moving the machine.

• Set the machine to the travelling posture in the right figure.

Before travelling, be sure to stow the hook block completely.

• Before travelling, move the sprocket to the rear of the machine.

Leaving the sprocket in front of the machine causes the

direction of actual running to be in reverse of the running lever, and thus the machine may move toward undesired direction, resulting in serious bodily accidents.

• Make sure the boom is fully lowered and retracted.

• When moving the machine for a short distance, fix the hook

block in the retracting position at the tip of the boom. When moving it for a long distance, fix the hook block to the hook holder at the front end of the upper slewing body.

Refer to the descriptions under “Operation 3.6 Machine

Travelling Posture”.

• If any person is staying around the machine, they may come into contact of the machine or may be caught by it, resulting in a serious bodily accident.

Before starting to move, strictly observe the following:

• Operate the machine only when the operator is sitting on the

operator’s seat.

• Do not fail to wear the seat belt. Otherwise, the operator may be

forced to jump out of the cabin because of an emergency braking, resulting in injury.

• Make sure to check around again so that no one or no object is

in the vicinity before starting to move.

• Before starting to move, be sure to honk the horn to warn

people around the machine.

• When running, check to ensure that the travelling alarm sounds

normally.

• When there is a view-obstructing range in the rear of the

machine, appoint a marshaller to ensure that no contact accident will occur and slew the machine by paying adequate attention.

Even if the machine is equipped with mirrors and the rear

observation camera, be sure to appoint a marshaller.

CAUTIONS WHEN TRAVELLING

Always observe the following to prevent serious injuries and accidental death when moving the machine.

• Set the machine to the travelling posture in the right figure.

Refer to the preceding subsection “CAUTIONS ON MACHINE

FORWARDING/REVERSING AND SLEWING”.

• Do not attempt looking sideways or other dangerous act when driving.

• Do not over speed, start moving/stopping/slewing suddenly, or meander since such acts are dangerous.

• During travelling, keep an adequate distance from persons, structures and other machines to prevent any contact accident.

• Avoid moving over any obstacle. Travel as slowly as possible when moving over an obstacle for unavoidable reason. Since the machine tends to tumble more easily in the lateral direction rather than in the longitudinal direction, never attempt to move over an obstacle that will cause the machine to inclined to leftward or rightward.

• When travelling on a rough terrain, keep the vehicle speed at low level to avoid tumbling and also avoid any abrupt change of travelling direction. Such may cause the machine to lose balance or damage the machine or nearby object.

• When running on a bridge or crossing over a structure, check the withstand strength of the bridge or viaduct against the machine mass beforehand. Further, when running on a public road, check with the competent authorities and follow their instructions.

• When operating the machine in a place where machine height is restricted such as in a tunnel, in a building, under an overpass or cables, pay close attention to prevent the machine and crane from coming into contact of those objects and operate the machine slowly.

BE CAREFUL WHEN TRAVELLING OVER SLOPE

ALWAYS observe the following to prevent serious injuries and death accidents when travelling over a slope for unavoidable reason.

• When running on a slope, be sure to store the hook block in the hook holder at the front end of the upper slewing body to form a running posture. Any simplified fixation of the hook at the tip of boom gives rise to the risk of loosening during running.

Refer to the descriptions under “Operation 3.6 Machine Travelling

Posture” for the travelling posture of the machine.

• When running on a slope having an inclination of 10 degrees or more, climb the slope in the reverse direction and run downhill in the forward direction. Thus, always allow the machine front to face the valley when running on a slope. Climbing the slope in the forward direction and going downhill in the reverse direction cause the machine to be unstable, giving rise to the risk of tumbling or lateral skidding.

• When travelling on a slope, face the machine perpendicular to the slant face and never change the direction or travel transversely.

Practice safe travelling by for instance lowering to the plain land

and divert.

• Always keep such condition during running that the machine can stop any time when it slips or becomes unstable.

• When running downhill, lower the engine revolution and set the running lever close to the neutral position and run in a low speed.

• When running on a ground covered with grass and leaves or on a wet steel plate, keep the speed to minimal. If the ground in such condition is inclined only slightly, it is extremely slippery.

• If the engine comes to a sudden stop, immediately return each operating lever to its neutral position, and then restart it.

BE CAREFUL OF TRIPPING ON UNSTABLE GROUND

Always observe the following to prevent serious injuries and death accidents when travelling over an unstable ground for unavoidable reasons.

• Do not enter soft ground area. The machine may get stuck.

• The ground near cliff, roadside and deep gully is unstable, so avoid going near such ground as much as possible.

The machine may trip or fall when the ground loosens due to mass and/or vibration of the machine. Be

especially careful after rain, use of dynamite, or earthquakes, as the ground will be unstable.

• Avoid going near the earth fills or vicinity of dug gutter that are instable.

Crumbles caused by mass and/or vibration of the machine may cause the machine to tilt.

CAUTIONS WHEN TRAVELLING SNOW COVERED OR FROZEN GROUND

ALWAYS observe the following to prevent serious injuries and death accidents when travelling over snow covered ground or frozen road for unavoidable reason.

• The snow covered grounds and frozen roads cause slips even when the inclination is small, so decrease the speed when travelling and avoid sudden starting/stopping/slewing. Uphill and downhill are especially likely to cause slips and thus dangerous.

• Frozen ground tends to be weak with the increase of atmospheric temperature, and may cause the machine to tumble or obstruct the operator to get off. Be very careful.

• Moving into an area covered with deep snow may cause the machine to tumble or dive into the snow. Be cautious of erroneously deviating outward from the road shoulder or driving into a snow drift.

• Running on a snowbound site may encounter the risk of tumbling or collision because of an invisible road shoulder or snow-covered installations. Be very careful.

• Refrain from directly touching metal surface with your hands or fingers in cold and harsh weather conditions.

Touching metal surface may result in skin freezing to the metal surface.

• Remove snow and/or ice laid on the machine that causes the safety nameplates to be hard to read. Be especially careful to securely remove those that are on the boom and thus may fall.

CAUTIONS WHEN PARKING

• For parking, select an area with flat and solid ground.

• For parking, select an area without the risk of landslide, rock fall and water submersion.

• When parking, set the machine to the “travelling posture” as shown in the figure at the right.

• Make sure the boom is fully lowered and retracted.

• When parking the machine for a short period of time, fix the hook block in the retracting position at the tip of the boom. When parking for a long time, fix the hook block in the hook holder at the front end of the upper slewing body.

• When inevitably stopping the machine on an inclined area, strictly observe the following:

• Make sure the boom is fully lowered and retracted.

• Direct the boom toward the valley.

• To keep the machine immobile, apply a block as a chock.

• When leaving the machine, strictly observe the following:

• Set the lock lever (1) to “LOCK” position (L), and stop the engine.

• Apply all locks. Do not fail to remove the starter key to prevent the machine from operated by other personnel without approval, and keep it in a specified place.

2.4 CAUTIONS DURING CRANE OPERATION

INSPECTION BEFORE STARTING WORK

Check that the safety devices and crane operate properly.

• Operate each of the operation levers, pedals and switches under no load, and check that operations take place without any abnormality.

Repair immediately if any abnormality exists.

• Check such safety devices as the moment limiter (overload prevention device), over-hoisting prevention device and over-lowering prevention device to ensure that they function normally.

CAUTIONS WHEN HANDLING THE MACHINE MONITOR

• Use / store the machine monitor under the following ranges of ambient temperature.

Operating temperature: -30 to 60 °C Storage temperature: -30 to 80 °C

• Avoid direct sunlight so that the ambient temperature in the region of the machine monitor does not exceed the above range.

• Avoid locations with strong acid or alkaline atmosphere as much as possible. Otherwise, unexpected failures may occur.

• Do not allow external objects etc. to impact the machine monitor body.

Such attempt may damage the case and may result in failures and improper operations.

• Do not press the screen of the machine monitor with excessive force or press with sharp objects such as the tip of a screwdriver. This may damage the screen and result in failure or incorrect operation.

• Do not disassemble the machine monitor. Such attempt may result in failures and improper operations.

CAUTIONS WHEN SETTING MOMENT LIMITER

• In the moment limiter, the moment is calculated on the assumption that the machine is placed horizontally.

If crane work is performed without the machine being placed horizontally, no forecast or warning is

issued even when the rated total load is approached.

Never fail to check the inclination of the machine by using the level.

• When using the moment limiter, check to ensure that the indicators of boom angle, boom length and actual load are interlocked with the crane motion to give correct values. If the crane is used with no correct indication given, correct measurement results cannot be obtained, causing serious physical injury due to tumbling or damage of the machine.

• When using the moment limiter, be sure to check that the setting of wire falls of the moment limiter matches the wire falls of the crane. If the number of falls of wire does not match, be sure to change either the setting of number of falls of wire of the moment limiter or the number of falls of wire of the crane, to make both match with each other. If used without matching the number of wire falls, correct measurement results cannot be acquired, possibly leading to breakage of the wire rope and serious bodily injury.

• Do not change the setting carelessly during measurement with the moment limiter. Otherwise, correct measurement results cannot be obtained, causing serious physical injury due to tumbling or damage of the machine.

CAUTIONS FOR SELECTING A PLACE TO INSTALL

Always place the machine on a level, stable and solid ground. It is dangerous to install on any of the following places:

• Simple asphalt pavement

• Thin concrete pavement

• Flagstone pavement

• Areas where under the pavement surface is hollow due to water erosion and the top soil appears to be hard but soft in the ground

• Soft ground near a road shoulder or dug hole

• Slope

CAUTIONS WHEN WORKING ON A SLOPE

When inevitably perform operation on a slope, provide an earth fill (B) to create a horizontal, solid and strong footing for installing the machine in order to prevent it from tumbling. Attempting a diagonal hoisting without ensuring the horizontal installation of the machine not only disturbs the normal functioning of the moment limiter (overload prevention device), but also affect the machine with an unexpected force, resulting in tumbling or damage of the machine.

FOLLOW INSTRUCTIONS AND SIGNS WHEN WORKING

• When operating the crane, appoint a work supervisor and mutual signs beforehand, and follow the work supervisor and signs during operation.

• When operating at a operator’s blind spot, especially follow the instructions and signs of the work supervisor and operate with caution.

• When operating the crane, there is a danger of colliding with slewing boom and upper slewing body and of the gaps between movable parts of the derrick cylinder that may catch body parts such as your arm or finger.

The operator is requested to make sure no one is within the

working radius of the crane before operating.

CAUTIONS UNDER COLD WEATHER

• Defrost and remove snow from the slewing gear, boom and winch. Check their movements before starting work.

• Check the winch brake to ensure that it works properly.

For details concerning warm-up, refer to “Operation 3.3.1 Warm-up”.

• Avoid revving up the engine immediately after starting it.

• Deposited snow within the crane operation range may cause tumbling of unloaded objects or catching feet of operators around the machine. First remove snow before starting a crane operation.

• In cold weather conditions, check that the load before being hoisted is not frozen to the ground or other substance. Attempt to hoist without knowing the load is frozen and stuck to the ground or other substance is dangerous.

• At the end of the work, if substances such as condensation, snow or mud are stuck to the wire harnesses, connectors, switches, sensors or similar parts, wipe them off and put covers on them. If the infiltrated condensation and/or similar substance freeze, the machine may operate improperly upon the next use and cause unexpected accidents.

PAY ATTENTION TO WEATHER INFORMATION

• A risk of lightning exists in case of a thunderstorm, so abort operating the crane, immediately lower the load and retract the boom.

• Wind can cause the hoisted load to move back and forth, which could cause the machine to become unstable. If the hoisted load is affected, immediately lower the load and retract the boom.

• If the maximum instantaneous wind speed is 10 m/s or greater, abort operating the crane, immediately lower the load and retract the boom.

• Even when the maximum instantaneous wind speed is below 10 m/s, the bigger the hoist load, the higher the hoist load position, or the longer the boom can increase the effect from the wind. Be very careful during the work.

• When operating the extended boom, the winch wire rope and electric signal cables are prone to be blown up by winds, and thus be cautious of the operation. Similarly, the peripheral area of a high-rise building, winds blow its sides and may gather their velocity much higher, which deserve attention.

• When a load such as a steel plate that has a large area exposed to wind is being hoisted, the wind arriving from front/rear/side of the boom may cause the machine to trip or damage the boom. Be very careful during the work.

• The higher the boom is derricked, the higher the probability of tumbling backward is raised by wind blowing from ahead. Thus, adequate attention is required in the operation.

• When an earthquake occurs, abort the operation and wait until it is over.

The following table indicates approximate relation between the wind speed and wind effect. The wind

speed mentioned in the weathercast is mean wind velocity (m/s) during 10 minutes at 10 m above the ground.

Force Wind Speed (m/s) Effect On Land

0 Less than 0.3

1 0.3 or more and less than 1.6

2 1.6 or more and less than 3.4

3 3.4 or more and less than 5.5

4 5.5 or more and less than 8.0

5 8.0 or more and less than 10.8

6 10.8 or more and less than 13.9

7 13.9 or more and less than 17.2

8 17.2 or more and less than 20.8

9 20.8 or more and less than 24.5

10 24.5 or more and less than 28.5

11 28.5 or more and less than 32.7 Widespread structural damage.

Smoke rises vertically.

Wind motion visible in smoke.

Wind felt on exposed skin.

Leaves and small twigs move in constant motion.

Dust and loose paper blow up. Small branches begin to move.

Bushes with leaves start to sway. Waves form on the face of pond/swamp.

Large branches begin to move. Whistling heard in electrical wires. Use of umbrella becomes difficult.

Whole trees start to shake. Effort needed to walk against the wind.

Twigs broke from trees. Progress impeded.

Light structure damage. Slates blown off.

Trees uprooted. Considerable structural damage.

CAUTIONS WHEN SLINGING

• Check the following before hoisting a load.

Attempt to hoist the load without checking may result in serious accidents by dropping the load or

tripping.

• Observe the values in the rated total load chart.

• Hoist from the centre of gravity of the load.

• Check that the wire rope of the hook block is vertical.

• When the load leaves the ground, stop winding up the load once and check whether the load is stable.

• Before hoisting a slung load, always check whether the sling wire rope “retainer device” of the hook block is hung correctly. If the “retainer device” is not hung, the wire rope may leave the hook block and cause the load to fall resulting in a serious accident.

• Larger wire rope angle when hoisting the load increases force that applies to the wire rope even when the load weight is unchanged, thus may cause the wire rope to snip. Give due consideration to slinging operation so that excessive force is not applied to the wire rope.

• Hoist only 1 load at a time.

Attempts to hoist more than one load may cause the hoist bracket to hit and damage the other hoisted

load, or the loads move and lose balance, causing serious accidents such as tripping.

Do not hoist more than 1 load at a time even if the total combined weight is within the rated total load.

• Hoisting of lengthy load causes the load to lose balance and is dangerous.

In the case of such load, hoist vertically by using a cramp, or achieve balance of the hoisted load by

applying a rope to both ends of the load.

CAUTIONS WHEN HANDLING WIRE ROPE

• Wire ropes can wear out from constant use or old age, so be sure to inspect every time before work, and replace immediately if at or beyond the replacement standard.

At the same time, inspect the sheave at the tip of the boom and

the sheave of the hook block. Damaged sheaves accelerate the damage of the wire ropes.

• Use wire ropes specified by us.

• The operator may be injured by breaking wire strands.

• Always wear leather gloves when handling the wire rope.

• Do not use a wire rope of which any of the following applies:

• 10% or more of strands (except a filler wire) in 1 twist of a wire rope are snipped.

• The wire rope diameter abrasion is beyond 7% of the nominal diameter.

• Kinked wire rope.

• Excessively deformed or corroded wire rope.

• Affected by heat or sparks.

CAUTIONS WHEN OPERATING CRANE

• Stability of a crane is decisively critical in the transverse direction of the carrier. In the diagonal direction, although stability is increased, exceeding the rated load may result in damage of the boom or machine body. Do not turn the moment limiter (overload prevention device) off, even if operating in the diagonal direction.

• Be sure to check that the override switch is at the “OFF” (auto) position before operating the crane.

Do not attempt to operate the crane with the override switch kept set to the “ON” (cancel) position. The override switch should be at the “ON” (cancel) position only when the moment limiter is faulty or

during inspection or maintenance works.

• Perform work while paying attention to the display and warning of the monitor of moment limiter

(overload prevention device).

• Attempt to work beyond the capacity of the machine may cause serious accidents and failures caused by for instance tripping or fluctuation. Observe the rated total load chart when operating the crane.

• Perform the crane operation slowly.

Sudden use of lever or accelerator may cause risks such as shaking, dropping of the load or collision

with the surroundings. Be especially careful to be slow during the slewing operations.

• When operating the crane, appoint a work supervisor and perform the work under the supervisor’s instructions.

Follow the supervisor’s instructions on the method and procedure for the work. Determine the method

for details of mutual signs and follow the signs.

• Hoisting of lengthy load causes the load to lose balance and is dangerous. In the case of such load, apply a rope to both ends of to stabilize the hoisted load.

• Do not allow unauthorized personnel to approach the working radius or under the load because of risks of falling load and contact with load. This could cause a serious bodily accident. Also consider that the working radius increases when the load is hoisted and the boom is deflected.

• Operations requiring more than the machine performance can cause accidents or failure. Crane operations must always be carried out according to the rated total load chart.

• Be careful to prevent the wire rope and/or hoisted load from contacting an obstacle such as a tree or steel when hoisting a load.

If caught by an obstacle, do not forcibly wind up the hoist load, but untangle the caught part before

winding up.

• Do not pull laterally, pull toward you or hoist diagonally. Such attempt may cause the crane to trip or get damaged.

• It is dangerous to operate the crane under bad weather or at places where the view is not clear.

Work lamps or other lighting devices should be used in dark places. When the view is bad because of bad weather (rain, fog, snow, etc.), stop the operation and wait until

the weather recovers.

• Do not use for purpose, for instance raising a person using a crane, other than the true purpose.

• If the alarm buzzer of the over-hoist detector sounds, immediately take your hand off the winch lever. Winding-up of the hook block stops. Then, operate the winch lever “downward” (push it forward) to wind down the hook block. The hook block also rises when you attempt to extend the boom. Provide sufficient clearance between the boom and hook block when performing crane operation.

• When the boom is extended, the hook block is wound up. Operate the winch lever “downward” and extend the boom while lowering the hook block.

• If an overload is caused during work, operate the winch lever “downward” and wind down the winch to unload.

Do not raise or lower the boom suddenly. Such attempt may cause serious accidents by tumbling.

• The volume of the hydraulic oil in each of the cylinders changes depending on the temperature.

By leaving idle with a load being hoisted, as the time passes by the oil temperature drops and the

hydraulic oil volume decreases, and changes such as the boom derrick angle decrease and boom length decrease may occur.

In that case, execute boom derricking operations and boom extension operations appropriately to

correct.

• Do not leave the operator’s seat when a load is hoisted. When leaving the operating position, first unload and set the lock lever to “LOCK” position.

• When the hook block is not used, wind up the winch.

The hook block of an empty load may hit operators near the load.

• Operation while hoisting a vibro etc. or other vibration generating attachment is in principle prohibited. The winch or other unit may be damaged by the vibration of the attachment.

CAUTIONS ABOUT HIGH TEMPERATURE OIL WHEN OPERATING CRAN E

When hydraulic oil temperature exceeds 80 °C, high pressure hoses and seals can be damaged by heat, and it may cause burning to skin from oil spray. If temperature of hydraulic oil exceeds 80 °C, stop the operation and wait until the oil cools down. Hook raising/lowering operation at high lift or continuous crane operation with the accelerator pedal depressed will increase the hydraulic oil temperature. Take special care during such operation.

CAUTIONS WHEN OPERATING WINCH

• Select a suitable number of wire rope falls to the hook and boom length to the mass of hoisted load.

Refer to “Operation 4. Handling Wire Rope” for details.

• Do not allow persons to enter the area below the hoisted load.

• When hoisting a load, always stop once at the “takeoff” position where the hoisted load leaves the ground. Check subjects such as load stability and load force, then hoist up the load.

• Do not pull laterally, pull toward you or hoist diagonally. Such attempt may cause the crane to trip or get damaged.

• Over-hoisting of the hook block may result in collision with the boom, snipping the wire ropes and causing the hook block and load to fall and may lead to serious accidents. Take care not to over-hoist the hook block.

• Be careful to prevent the wire rope and/or hoisted load from contacting an obstacle such as a tree or steel when hoisting a load.

If caught by an obstacle, do not forcibly wind up the hoist load, but

untangle the caught part before winding up.

• Do not use the winch drum wire that is wound up irregularly. If wound up irregularly, not only does the wire rope get damaged and have its lifetime shortened, but it may break causing serious accidents.

Observe the following precautions to avoid wire rope from winding

up irregularly.

• Do not let the hook block tumble on the ground.

• When lowering the hook block long distances for underground work, be sure to leave 3 turns or more of wire rope on the winch drum.

• When decelerating from high-speed hoisting, ease off the accelerator pedal to lower the engine revolution, and then slowly return the right-hand side machine operation lever. A sharp returning of the right machine operation lever while leaving the revolution at a high level causes the hook to jump up due to the rapid deceleration shock, resulting in an irregular winding.

• If the wire rope is twisted and causes the hook block to turn, fully eliminate the twist before work.

Refer to “Operation 4.3 Corrective Actions Against Twisted

Wire Rope”.

CAUTIONS WHEN OPERATING BOOM

• Perform boom operation lever operation as slowly as possible.

Especially avoid sudden lever operations when the load is

hoisted, which may cause the load to waggle and give large impact to the machine, and thus may damage the crane or trip the machine.

• When the boom is lowered, the working radius increases, and the rated total load that can be hoisted decreases. When working while raising/lowering the boom, pay extra attention so that the mass of the load at the time the boom is most lowered does not cause overloading.

• Pulling of the load laterally by raising/lowering, and/or extracting/retracting the boom is prohibited. Do not attempt to do the above under any circumstances.

• When extending/retracting the boom, check raising of the winch and take sufficient care.

• When the boom is extended, the working radius increases, and the rated total load that can be hoisted decreases. When working while extending/retracting the boom, pay extra attention so that the mass of the load at the time the boom is most lowered does not cause overloading.

CAUTIONS DURING SLEWING OPERATION

• Check the safety in the vicinity and honk the horn before slewing.

• Perform the slewing lever operation as slowly as possible. Make sure to start smoothly, slew at low speed, and stop quietly.

Especially avoid sudden lever operations when the load is

hoisted, which may cause the load to waggle and cause the machine to lose balance, and thus may damage the crane or trip the machine.

• Attempts to pull the load towards the machine or let the load stand up by slewing operation are strictly prohibited. Do not attempt to do the above under any circumstances.

• Be careful to prevent the wire rope and/or hoisted load from contacting an obstacle such as a tree or steel when hoisting a load or slewing.

If caught by an obstacle, do not forcibly wind up the hoist load, but

untangle the caught part before winding up.

COOPERATIVE HOISTING IS PROHIBITED AS A GENERAL RULE

Cooperative hoisting, where two or more cranes are used to hoist a single load, is prohibited as a general rule. Cooperative hoisting is a highly dangerous operation that may invite tumbling of the machine due to deviated centre of gravity, fall of hoisted load and damage of the boom. If cooperation hoisting is required for unavoidable reasons, discuss and establish a work scheme under the responsibility of the user, let the worker fully acknowledge the work method and procedures, and only proceed under the direct leadership of the work supervisor. Also, observe the following cautions:

• Use the cranes of same model.

• Choose the machine model that can handle sufficiently larger load than the load to be hoisted.

• Make sure only 1 person gives signals.

• Limit the crane operations to single operations as a rule, and do not attempt any slewing operation.

• Appoint 1 responsible sling operator who is most experienced.

CAUTIONS FOR WORK AT WORKPLACE WHERE LIFT BELOW GROUND LEVEL IS PERFORMED

• When lowering a wire rope for work underground, leave at least 3 turns of wire rope on the winch drum.

• Make sure to give signals.

• Perform crane operation with extra care.

CAUTIONS ON TRAVELING WITH HOISTED LOAD

Hoisted load travelling operation is in principle forbidden, because it is extremely unstable and dangerous. When inevitably performing a travelling with a hoisted load, observe the following. Negligence of the precautions may cause serious bodily accident.

• Strictly observe the precautions described in the instruction manual.

Refer to the descriptions under “Operation 3.19.1 Precautions for Traveling with Hoisted Load”.

• Carefully observe the precautions on the operation details for the working posture prescribed in the instruction manual.

Refer to the descriptions under “Operation 3.19.2 Operation Posture During Travelling Hoist”.

• As to the hoisted load, limit its weight within an allowance and assure its clearance above ground.

• For a travelling operation, appoint marshallers.

• Remove any obstacle on the operation path and allow no operator to trespass the path.

• Operating for a distance exceeding the specified boom length is prohibited.

• Since the rated total load refers to the maximum value, suppress the load to a safe level in accordance with operating situation.

• To perform travelling operations with a hoisted load, keep the engine revolution to low idling (low speed) and operate gently at a low travelling speed so that the load will not swing. Refrain from actions which may cause the load to swing such as suddenly starting, stopping, or operating the speed-up pedal while in motion.

• When travelling with a hoisted load, swivel operations and crane operations are not possible.

3. TRANSPORT PRECAUTIONS

CAUTIONS DURING TRANSPORT

When transporting the machine, there is a risk of inviting a serious bodily accident incurred by an accident during transportation.

• Strictly observe the following when transporting the machine.

• Depending on the type of crane installed, the mass, height and total length of the machine are varied, and thus check these details.

• When travelling on a bridge or passing over a structure, check in advance the bridge and viaduct to ensure that they can withstand the mass of the trailer and the machine, and firm up the transportation route.

• When travelling on a public road, notify the competent authority to receive permission for the transportation.

• The machine may require disassembled transportation in accordance with related regulations (such as the enforcement ordinance of the Road Traffic Act). Contact us or our sales service agency when conducting the transportation.

CAUTIONS WHEN LOADING OR UNLOADING

Pay particular attention to the loading or unloading operation of the machine, which may invite such an accident as tumbling or falling of it. When conducting a loading or unloading of the machine, strictly observe the following precautions:

• Select an area with horizontal and solid ground for setting the machine. In addition, keep enough distance from the roadside.

• Use the ramps under 15° or smaller angle. In addition, decide the clearance between ramps to meet the centre of the crawler.

• Use the ramps that have fully strong width, length and thickness, and that enable safe loading/unloading.

Reinforce with blocks or other substances if the ramps deflect much.

• Remove the mud and other substances from the footing to prevent the machine from skidding over the ramps. Remove the substances stuck on the ramps such as grease, oil or ice, and keep clean.

Be especially careful on the rainy days when slips may easily occur.

• When loading or unloading the machine, be sure to set the machine to a travelling posture and fix the hook block to the machine body by using wire ropes.

Refer to the descriptions under “Operation 3.6 Machine

Travelling Posture”.

• When loading or unloading, set the engine rotation to low idling (low speed rotation) and operate slowly by low speed travels.

• Be sure to load the machine on to the truck by driving in reverse. Loading by driving forward may cause the machine to overturn.

• Do not operate any other lever than travelling levers (forward/reverse travelling) on the ramp boards.

• Never change direction on the ramp. Temporarily leave the ramp before correcting the direction.

• Across the border of ramp and loading deck, the centre of gravity of the machine rapidly moves and thus the machine becomes unstable. Accordingly, pass the border particularly slowly.

• When unloading the machine and placing the load onto an earth fill or platform, secure sufficient width, strength and inclination of the ground or the platform.

• Set the machine to a travelling posture and be slow when operating to change the direction on the trailer platform where the footing is unstable.

• After loading the machine, apply the wood blocks so that the machine does not move, and securely fix with wire ropes or other means.

Refer to “Operation 5. Transportation”. Refer to “Operation 5.1 Loading/Unloading”.

4. TOWING PRECAUTIONS

TOWING PRECAUTIONS

When towing, errors in the choice of wire rope, inspection methods, towing methods etc. may result in serious injury or death.

• Be sure to check that the wire rope for towing and the towing rod have sufficient strength for the weight of the machine being towed.

• Wear leather gloves when handling the wire rope.

• Never enter between the towing machine and the object being towed during the towing process.

• Do not, under any circumstances, attempt towing on slopes.

• Wire ropes with broken strands (A), kinks (B) or sections with reduced diameter (C) are at risk of breaking and should not be used under any circumstances.

5. MAINTENANCE PRECAUTIONS

5.1 PRECAUTIONS BEFORE MAINTENANCE

PUT UP A WARING SIGNBOARD DURING INSPECTION/MAINTENANCE

• When the warning sign, “DANGER. Do NOT operate”, is in place, the machine is being inspected or under maintenance. Do not start the engine and refrain from touching operating levers. Disregarding the warning sign to operate the machine may give rise to the danger of involving the maintenance personnel into the rotating parts or movable parts of the machine, resulting in serious injury.

• Put up additional warning signs around the machine as required.

Part number of warning signboard: 585-4714400 When this warning signboard is not used, store it in a tool box. If

no tool box is available, keep it in a holder for the instruction manual.

TIDY UP WORKPLACE

• Clean and maintain by tidying away tools, hammers and other things that obstruct the working area and by wiping away slippery substances such as grease and oil to assure safe operations.

An untidy workplace may cause safety hazards and result in injuries to personnel.

• Organic glass (polycarbonate) is used for roof windows. When cleaning the roof windows, please use water and not organic solvents. If organic solvents such as benzene, toluene, methanol etc. are used, chemical reactions such as dissolution or decomposition will occur, degrading the polycarbonate.

SELECTING A WORKPLACE

• For inspection and maintenance, select an area with flat and solid ground.

• Select such a place where no risk of landslide, rock fall or flooding is feared.

KEEP AWAY UNAUTHORIZED PERSONNEL

During maintenance servicing of the machine, never allow any personnel except the required persons. Appoint monitoring personnel as required.

FOLLOW SUPERVISOR’S INSTRUCTION DURING TEAMWORK

Appoint a person who supervises the work and follow his/her instructions in case of machine repair or installing/uninstalling a work device. Unexpected accidents due to misunderstood communication between workers may occur during teamwork.

KEEP ENGINE STANDING STILL DURING INSPECTION AND MAINTENANC E

• Before starting inspection and maintenance servicing, be sure to retract the crane and stop the engine.

• Turn the starter switch to the “OFF” position and set the lock lever (1) to the “Lock” position (L).

• Operate the left and right travelling levers full strokes forward and backward 2 to 3 times to relieve the pressure remaining in the hydraulic circuits.

After turning the starter switch OFF, wait for approximately 1

minute and push the horn switch to check that the horn does not sound.

• Apply pawls to prevent crawler from moving.

WORK BY AT LEAST TWO PERSONS DURING MAINTENANCE WITH ENGINE RUNNING

To prevent accidents, do not attempt maintenance when the engine is running. Always observe the following in case of maintaining with the engine running for unavoidable reason.

• One person should sit at the operator’s seat. Keep checking each other while ensuring that the engine can be stopped at any time.

• When working near such rotating parts as fan, belt, and winch drum, keep the operator’s body and any object that can be readily caught away from these parts.

• Never allow any object or tool to fall on or insert into the rotating parts of fan, belt and winch drum. Such an object may hit the rotating part or spring back from it, and thus it is dangerous.

• Do not touch operation levers. If it is unavoidable to use the operation levers, always give a sign to the other person and let him/her evacuate to a safe place.

• Relieve the pressure remaining in the hydraulic circuits and set the lock lever (1) to the “Lock” position (L).

Refer to “Inspection and Maintenance 2. Basic Maintenance

(Hydraulic Equipment Handling)” for details.

• Do not touch operation levers and pedals. If it is unavoidable to use the operation levers and pedals, always give a sign to the other person and let him/her evacuate to a safe place.

USE APPROPRIATE TOOLS

Use proper tools and handle them in correct manners. Using a damaged or deformed tool and using it for any purpose other than its intended application may giving rise to a serious bodily accident.

PRECAUTIONS FOR WORKING AT HIGH ELEVATION

Secure scaffolding by using a workbench with the stairs when working at high elevation.

CAUTIONS WHEN WORKING UNDER THE MACHINE AND CRANE

• For lifting up the machine, use a hoist or hydraulic jack in good condition and having enough strength to withstand the weight of components. Note that the hydraulic jack should not be used for lifting any part that is damaged, bent or twisted. Further, the wire rope to be used for hoisting shall not include broken wires, be reduced in diameter or kinked. Do not use a hook that is bent or damaged.

• When unavoidably going under the lifted machine to perform inspection and maintenance servicing, securely support the machine by using blocks and stays that are sturdy enough to withstand the machine weight. Failure to support the machine securely may cause falling of the machine, resulting in a serious bodily accident.

• Do not use concrete blocks for supporting the machine. A concrete block may readily be broken even under a light load.

CLEAN BEFORE INSPECTION OR MAINTENANCE

• Before starting an inspection or maintenance, clean the machine and prevent rubbish from entering the machine and make sure the safety will be ensured during maintenance.

• Attempt to inspect or maintain the machine still dirty not only lessens chance of locating faulty part, but may cause rubbish or mud entering your eye, or slipping and tripping that result in injury.

• Always observe the following when washing the vehicle.

• Use anti-slip shoes to prevent slips and trips caused by wet foothold.

• Put on protective equipment when using a high pressure steam car washer. Avoid an accident from high pressure water which causes skin laceration or mud or other substance to fly to eyes.

• Do not directly spray water onto the electrical system (sensors, connectors (1), controllers, machine monitor). Water entering the electrical system is dangerous and will cause faulty or improper operations.

• Do not spray water directly in the area of operator’s seat or its underside.

5.2 PRECAUTIONS DURING MAINTENANCE

CAUTIONS DURING WELDING REPAIR

Conduct welding operation in a location with good facility, and, only authorized personnel are permitted to be engaged in the welding work. Unauthorized personnel are strictly prohibited since risks such as gas generation, fire and electrical shock are present when welding.

CAUTIONS WHEN HANDLING BATTERY

For inspecting and handling the battery, turn the starter switch to the “OFF” position and disconnect the power supply circuit to prevent unexpected startup during servicing. Because the battery produces hydrogen gas, sparks around the battery can cause an explosion. Moreover, the battery solution contains diluted sulfuric acid. Wrong handling of it may cause a bodily accident, explosion and fire, and therefore always observe the following precautions:

• AVOIDING THE RISK OF BATTERY EXPLOSION

• If the battery fluid level decreases to the LOWER LEVEL or

further below, do not use the battery or recharge it. Otherwise,

an explosion may occur. Never fail to conduct the regular inspection of battery fluid level and refill purified water (such as battery replenisher available on the market) to the UPPER LEVEL.

• Do not smoke or use fire near the battery.

• During recharging the battery, it generates hydrogen gas that is flammable.

Before recharging it, dismount if from the machine and conduct the recharging in a well ventilated place. During the recharging process, remove the battery cap.

• Securely tighten the battery cap afterwards.

• WARNINGS CONCERNING DISCONNECTION OF THE BATTERY CABLE DURING ENGINE OPERATION

Never remove the battery cable while the engine is running. Surge voltages may be generated and destroy electronic circuitry.

• AVOIDING THE RISK OF DILUTED SULFURIC ACID

• Always wear protective glasses and rubber gloves before

handling the battery.

• If the battery fluid enters your eyes, wash immediately with

water and see a doctor as soon as possible.

• If the battery fluid contacted clothing or skin, immediately wash

away by huge quantity of water.

• DISCONNECT BATTERY TERMINAL

Before starting the repair work of electric system and performing a welding operation, first turn the starter switch OFF, wait for about one minute, and then disconnect the battery terminals to interrupt the flow of electric current.

• DANGER OF SPARKING

To prevent sparking, strictly observe the following precautions:

• Never allow such a metallic object as a tool to come in contact

with battery terminals. Do not leave tools or other object around the battery.

• When removing the battery, be sure to disconnect the

grounding (−) end terminal first. Conversely for mounting it again, first connect the positive (+) end terminal and fix the grounding end (−) terminal finally.

• Fix the battery terminal securely.

• Fix the battery body to the specified position securely.

BEWARE OF CHIPS WHEN WORKING WITH HAMMER

Working with a hammer may cause a serious bodily accident because of springing off of a pin or littering of metallic chips. Strictly observe the following.

• Hitting a pin or the like may give rise to shattering of broken chips

to hurt people nearby. Before starting such a work, make it sure that no one is staying around you.

• Knocking a pin off with a strong force may cause the pin flying out

to hurt a person nearby. Do not allow anyone to stay around.

• When knocking such a hard metallic part as pin or bearing, there

is a risk of causing a serious bodily accident by flying objects. Be sure to wear protective equipment such as goggles, gloves and helmet.

BE CAUTIOUS OF HEATED COOLANT

When checking or discharging the coolant, ensure that the radiator cap has been cooled down so that it can be touched by bare hand in order to prevent a burn injury because of the spewing hot water or steam. When removing the cap, first loosen it slowly to relieve radiator internal pressure, and then take it off.

BEWARE OF OIL AT ELEVATED TEMPERATURES

When checking or discharging oil, ensure that the radiator cap and plug have been cooled down so that they can be touched by bare hand in order to prevent a burn injury because of the spewing hot oil or coming in contact with parts heated at high temperatures. When removing cap and plug, first loosen it slowly to relieve radiator internal pressure, and then take it off.

BEWARE OF OIL UNDER HIGH INTERNAL PRESSURE

The hydraulic system is constantly subjected to an internal pressure. Thus, when checking or replacing the piping and hoses, failure to ensuring that the internal pressure of the circuit has been relieved gives rise to a serious bodily accident. Strictly observe the following.

• Never replace piping or hoses while the hydraulic circuit is

subjected to an internal pressure. Be sure to relieve the pressure of the hydraulic circuit.

Refer to “Inspection and Maintenance 2. Basic Maintenance

(Hydraulic Equipment Handling)” for details.

• If an oil leakage is taking place, the piping, hoses and their

periphery are wet. Check to ensure that the piping is free from fissures and the hoses have no cracking or swelling.

Be sure to wear protective equipment such as goggles and gloves

during the inspection work.

• High pressure oil leaking through a small hole may puncture the

skin or destroy eyesight upon direct contact. If this happens, wash away with flowing clean water and see the doctor as soon as possible.

BEWARE OF FUEL UNDER HIGH INTERNAL PRESSURE

In the engine fuel piping, an internal pressure is generated during engine operation. Before starting the inspection and maintenance servicing of fuel piping, wait until its internal pressure is relieved. After stopping the engine, wait for 30 seconds or more before starting the work.

HANDLING HIGH PRESSURE HOSE AND PIPING

If fuel leaks from a hose or piping, there occurs a risk of fire and malfunction leading to a serious bodily accident. When leakage of oil or fuel is detected at a loosened joint or mounted spot of hoses or piping, immediately stop the work and re-tighten them with a specified tightening torque. Also, when recognizing a damage or deformation of hoses and piping, consult with us or our sales service agency. If any of the following conditions is found, replace the faulty parts:

• Damage of a hose or deformation of sleeve

• Scratch or truncation of the covering layer, or exposure of wire

reinforcement layer

• Covering layer is partially swollen

• Indication of twist or collapse on a movable part of hose

• Foreign object buried in coating

BEWARE OF HIGH VOLTAGE

During or at immediately after stopping an engine operation, the inside of engine controller and around the engine fuel injector are under a high voltage, and thus an electric shock may occur. Never touch the inside of engine controller and engine fuel injectors. If there is a need for touching these parts, consult with us or our sales service agency.

BEWARE OF NOISE

Use ear protection or ear plugs during long-term noise exposure, such as engine maintenance servicing. Large noise in the surroundings may cause hearing difficulty or deafness.

WHEN ADJUSTING CRAWLER TENSION, BEWARE OF HIGH PRESSURE GREASE

• The grease inside the crawler adjusting unit is under high

pressure.

Conducting the adjustment in an unauthorized procedure may

cause the grease discharging plug (1) to jump out, resulting in a serious bodily accident.

• When loosening the grease discharging plug (1) to loosen the

tension of crawler, do not rotate it more than 1 turn. Also, loosen the grease discharging plug (1) slowly.

• Do not allow your face, limbs and body to come closer to the

grease discharging plug (1).

NEVER DISASSEMBLE THE RECOIL SPRING

Under no circumstances, refrain from disassembling the recoil spring assembly. In the recoil spring assembly that is intended for buffering the idler, a strong spring is installed. An inadvertent disassembling it causes the spring to jump out, inviting a serious bodily accident. Contact us or our sales service agency if its disassembling is required.

BE CAUTIOUS OF COMPRESSED AIR

When using the compressed air for cleaning, there is a risk of serious bodily accident because of scattering waste objects. Be sure to wear goggles, dust mask and gloves.

CAUTIONS WHEN TREATING WASTE

In respect of the environment protection, pay sufficient attention to the treatment of waste matters.

• Be sure to use drums and tanks to hold the discharged waste

liquid. Never allow waste liquid to flow on the ground, into river, drainage, sea or lake.

• Observe the applicable legal regulations and rules when

disposing of this machine as well as harmful substances such as oil, fuel, solvent, filter or battery.

PERIODIC REPLACEMENT OF IMPORTANT COMPONENTS

• To assure the prolonged and safe use of the machine, be sure to conduct the periodic replacement of

parts that are particularly related to safety such parts as hoses and seat belts. Materials of these parts tend to change their properties with elapse of service time and will degrade, abrade and show fatigue with repeated services, and thus may cause a serious bodily accident. Also, it should be noted that their service life can hardly be determined by inspecting their appearance.

Refer to the descriptions under “Inspection and Maintenance 4. Periodic Replacement of Important

Components”.

• If any abnormality is observed in a critical part by appearance, replace it even if it has not reached the

time for regular replacement.

6. SAFETY LABEL LOCATIONS

Keep safety labels clean and visible at all times.

If lost, replace immediately or apply for a new one.

There are other labels than safety labels shown below and treat them in the same manner.

SAFETY LABEL LOCATIONS (1/2)

SAFETY LABEL LOCATIONS (2/2)

(4) Fuel Caution (CL000280200) (5) Hydraulic Oil Injection Port Warning (542-4782600)

(6) Trapping Risk / No Entry When Slewing

(7) Belt Entanglement Caution (CL000080010)

(CL000180012)

(8) Do Not Step On (584-4581700) (2 places) (9) Plug Ejection Caution (CL000190010) (2 places)

(11) Hoisting Position Warning (584-3437800)

(12) Burn Injury Caution (CL000170005) (15) Hook Block Winding Caution

(553-4267400) (2 places)

(16) Winch Winding Caution (553-4267500) (23) Caution for lifting machine (541-3472400)

(21) Warning (541-4614900)

(24) Machine Mass (542-4773100)

(28) Working Radius / Rated Total Load Chart (542-3582200)

(30) Safe Operation (557-3494500)

(31) Operating the Moment Limiter (542-2250000)

(32) Lever Operating Patterns (556-3368100)

(34) Cautions on override switch

(35) Number of Falls Switching Warning (585-3555500)

(585-4739200)

(36) Warnings on Operation, Inspection and Maintenance (584-3469700)

(38) Washing Caution (300-4213900) (3 places) (39) Driving Prohibited Tag (585-4738300)

(47) Trapping Risk (553-4267600) (48) Boom Operation Caution (542-4774400) (2 places)

(49) High-Pressure Washing Around Operator’s Seat

Prohibited (542-4774900)

(50) High-Pressure Washing Within Cover Prohibited

(CL000240110)

(52) Warning for blade operation (556-4575300)

OPERATION

1. NAME OF EACH SECTION 56

2. EXPLANATION OF EACH EQUIPMENT 58

3. OPERATION 95

4. HANDLING WIRE ROPE 153

5. TRANSPORTATION 159

6. HANDLING MACHINE IN COLD ENVIRONMENT 169

7. LONG-TERM STORAGE 172

8. TROUBLESHOOTING 173

1. NAME OF EACH SECTION

1.1 MACHINE UNITS

(1) Hook

(2) Hook block

(3) Wire rope

(4) Boom

(5) Derricking cylinder

(6) Winch

(7) Crawler

(8) Sprocket

(9) Track frame

(10) Idler

(11) Tri-colour revolving working status lamp

(12) Override switch

(13) Working lamp

(14) Headlight

1.2 CRANE OPERATION UNITS

(1) Operator’s seat

(10) Levelling instrument

(2) Light switch

(3) Lock lever

(4) Left work equipment operation lever

(5) Travel lever

(6) Accelerator pedal

(7) Horn switch

(8) Right work equipment operation lever

(9) Machine monitor

(11) Starter switch

(12) Speed-up pedal

(13) Buzzer canceling switch

(14) Maintenance switch

(15) Emergency stop switch

(16) Glow lamp

(17) Foot light

2. EXPLANATION OF EACH EQUIPMENT

2.1 MACHINE MONITOR

[1] STARTING SCREEN

• When the starter switch is turned “ON”, the starting screen is displayed.

• If operation lock password entry is activated then after the startup screen is displayed, the operation

lock password screen will display.

• Next, a standby screen appears before switching to the home screen.

NOTES

When the engine is started, the battery voltage can suddenly decrease depending on the temperature and battery condition. In such a case, the machine monitor display can temporarily disappear, but this is normal.

[2] HOME SCREEN

(1) User mode switch

(2) Hook stowage switch

(3) Travel mode selector switch

(4) Fuel gauge

(5) Hour meter display

(6) Time display

(7) Working mode display

(8) Travel 1st speed/2nd speed display

Refer to “Operation 2.3.4 Moment Limiter Functions” for the name of the moment limiter parts.

2.1.1 MONITOR BASIC ACTION AND DISPLAY

[1] USER MODE SWITCH

When the user mode switch (1) is pressed on the home screen, the user mode is displayed.

(1-1) Hook sling number change

(1-2) Working mode change

(1-3) Software version check

(1-4) Consumables display

(1-5) Monitor brightness adjustment

(1-6) Time setting

(1-7) Language setting

(1-8) Error history display

(1-9) Switch operation sound ON/OFF change

(1-10) Home switch

(1-11) Display page change

[1-1] HOOK SLING NUMBER CHANGE

When the switch (1-1) is pressed and held, the hook sling

number can be changed.

• 4 falls

• 2 falls

• Single fall

When the sling number is changed, the number on the hook

part of the moment limiter part changes and rated total load

changes.

Be sure to match the displayed number with the actual hook

sling number.

[1-2] WORKING MODE CHANGE

When switch (1-2) is pressed, the working mode can be

changed.

• S: Standard mode

• E: Eco mode (low revolution mode)

When the working mode is changed, the working mode display

(8) on the home screen changes.

In the eco mode, the upper limit of the engine revolution is

restricted and high output power operation is prevented.

[1-3] SOFTWARE VERSION CHECK

The controller software version can be checked.

[1-4] CONSUMABLES DISPLAY

When switches (1-4) are pressed, the list of consumables can

be viewed.

When exchanging consumable items, select the consumable

items replaced with ▲ or ▼ of adjustment switch (1-4A). After

selecting a consumable item, press and hold the replacement

switch (1-4B) to update the replacement time. When updating,

the number of exchanges is incremented once and the

remaining time is reset.

NOTES

• When replacing engine oil or the engine oil filter, “Did you

perform engine exchange?” is displayed, so select “Yes / No”.

• When replacing oil in winch reduction gear case, “Did you

perform winch reduction gear exchange?” is displayed, so select “Yes / No”.

When “always display” or “display at startup time” is selected for

the consumables icon display selection (1-4C), remaining times

of 30 hours or 3 days is displayed in yellow characters with an

outlined icon on the home screen; and remaining times of 0

hours or 0 days display in red characters with a solid-red icon on

the home screen.

Promptly replace such parts because danger is involved or the

machine body is adversely affected if they are used as they are.

NOTES

The setting “always display” is recommended for the consumables icon display selection (1-4C). Always display: When the replacement time approaches or

passes, the consumables icon is always displayed on the home screen.

Display at startup: When the replacement time approaches or

passes, the consumables icon is displayed on the home screen for only 30 seconds after startup.

None: When the replacement time approaches or

passes, the consumables icon is not displayed on the home screen.

[1-5] MONITOR BRIGHTNESS ADJUSTMENT

When switch (1-5) is pressed, the monitor brightness can be

adjusted.

Make adjustments with ◄ or ► of adjustment switch (1-5B).

The screen returns to the previous user mode screen with the

home switch (

1-5A).

[1-6] TIME SETTING

When switch (1-6) is pressed, time setting, 24/12 hour display

and summer time ON/OFF can be changed.

• Time setting

• 24/12 hour display change

• Summer time ON/OFF

[1-6-1] TIME SETTING

Select the date and time desired to be changed with ◄ or ► of

the adjustment switch (1-6A) and press the check mark (1-6B).

(The part whose background is white is selected.)

When the word colour turns red, editing becomes possible.

Make adjustments with ◄ or ► of the adjustment switch (1-6A)

in this condition.

When the check mark (1-6B) is finally pressed, editing is

completed.

[1-6-2] 24/12 HOUR DISPLAY CHANGE

When the switch (1-6C) is pressed, time display can be

changed to either 24 hour display or 12 hour display.

[1-6-3] SUMMER TIME ON/OFF

When the switch (1-6D) is pressed, ON or OFF of summer time

can be selected.

• ON: Time display is moved up by one hour.

OFF: Originally set time is displayed.

•

[1-7] LANGUAGE SETTING

When the switch (1-7) is pressed, the display language can be

changed.

[1-8] ERROR HISTORY DISPLAY

When switch (1-8) is pressed, the error history can be viewed.

Faults occurring at the present time are displayed in red

characters.

For details about the contents of the display, refer to “Operation

2.1.2 Warning Display”.

[1-9] Switch operation sound ON/OFF change

When switch (1-9) is pressed, switch operation sound ON/OFF

can be changed.

• OFF: No operation sounds are heard when switches are

operated.

• ON: Operation sounds are heard when switches are

operated.

[1-10] HOME SWITCH

• Short press: Returns one page.

Long press: Returns to home page.

•

[1-11] DISPLAY PAGE CHANGE

Each time the switch is pressed, the page changes: “page 1/2 to

page 2/2 to page 1/2”.

[2] HOOK STORAGE SWITCH

• The hook stowage switch is used to cancel the automatic stop function of the over-hoisting

prevention device.

When storing the hook block, carefully operate the right work equipment operation lever and

pay due attention not to allow the hook block to crash against the boom.

• Use the hook storage switch only when performing simple storage of the hook block into the

boom tip.

While continuing to press switch (2), operate the right work

equipment operation lever toward the “Hoisting” side. The hook

block is hoisted and is stored in the storage section of the boom

tip.

When the switch is released, the automatic stop function of the

over-hoisting prevention device turns into an operating state.

NOTES

• While this switch is pressed, the red lamp of the tri-colour revolving working status lamp illuminates.

• When the winch is hoisted while this switch is pressed, the

hoisting speed becomes slow, which is not a fault.

[3] TRAVEL MODE SELECTOR SWITCH

Travel with a lifted load is in principle prohibited because it is very unstable and involves danger. When there is no alternative but to perform travelling with hoisted load, refer to “Operation 3.19 Travelling With Hoisted Load” and strictly observe the rated total loads, operation methods and travel postures for travelling with hoisted load. Unless these precautions in travelling with a lifted load are observed, serious physical injury may be caused.

When switch (3) is pressed, the mode can be changed from

stationary mode to travel mode enabling travel with a lifted load.

The machine body illustration display on the home screen

changes.

[4] FUEL GAUGE

The fuel gauge (4) indicates the quantity of fuel in the fuel tank.

When the indicator comes near the red colour of the meter,

check the fuel quantity in the fuel tank and replenish fuel.

NOTES

Although the indicator may not point to the correct position for a while after the starter switch is turned “ON”, this is normal.

[5] HOUR METER DISPLAY

Displays the hour meter.

[6] TIME DISPLAY

Displays the set time.

[7] WORKING MODE DISPLAY

Displays the working mode currently set.

[8] TRAVEL 1ST SPEED/2ND SPEED DISPLAY

The display will be “1” under normal conditions.

The display changes to “2” only when pressing the speed-up pedal.

2.1.2 WARNING DISPLAY

[1] WARNING DISPLAY AND ERROR CODE DISPLAY

If the warning monitor illuminates in red, immediately stop work and stop the engine, or set it to low idle. Then, immediately inspect the applicable part and take action for it.

Emergency stop items are those to which you have to pay attention during engine running and when an

abnormality occurs, items for which immediate action must be taken are displayed. When an abnormality

occurs, the monitor of the abnormal part illuminates in red and the buzzer sounds.

(1) Consumables display

(2) Charge capacity abnormality

(3) Hydraulic oil temperature abnormality

(4) Engine coolant temperature abnormality

(5) Engine oil pressure abnormality

(6) Engine system abnormality

(7) Error code display

If warning and/or error code is displayed, check the warning content and error content.

If an error code is displayed, please contact us or our sales and service agency.

2.2 SWITCHES

(1) Starter switch

(2) Horn switch

(3) Light switch

(4) Buzzer canceling switch

(5) Maintenance switch

(6) Emergency stop switch

(7) Override switch

[1] STARTER SWITCH

Always turn the starter switch to the “OFF” position at the end of work.

Use this switch to start and stop the engine.

• OFF

The key can be inserted and removed, the electrical system

current is turned off except to the lights and the engine is

stopped.

• ON

Electricity flows through the charging circuit and lights circuit.

Keep the switch at this position while the engine is running.

• START

A position where the engine starts. Keep the key at this position during cranking and when the engine

has started, immediately release your hand from the key. The key automatically returns to the “ON”

position.

The engine of this machine has the automatic remaining heat

function. If the engine does not crank when it is cold, AUTO

GLOW lamp illuminates. When the lamp illuminates, wait until the

lamp goes out and then, turn the switch to the START position to

start the engine.

NOTES

The engine does not start unless the lock lever is at the lock (L) position. Check that the lock lever is at the lock (L) position before operating the starter switch.

[2] HORN SWITCH

When the switch on the centre of the knob of the right work

equipment operation lever is pressed, the horn sounds.

[3] LIGHT SWITCH

This switch lights the work lights, the headlight and the foot light.

Position 1: The foot light lights up

Position 2: The foot light, work light and headlights light up

OFF position: Lights are OFF

[4] BUZZER CANCELING SWITCH

For your safety, set the switch to the normal position for work.

• (a) Cancel position:

The warning buzzer sound is stopped.

• (b) Normal position:

The warning buzzer tone sounds.

NOTES

The buzzer tone which can be cancelled is limited to the buzzer tone when a fault code is displayed. Other warning sounds are not cancelled.

[5] MAINTENANCE SWITCH

This switch is not used for crane operations.

It is a maintenance switch for servicing.

[6] EMERGENCY STOP SWITCH

This switch is used to stop the machine immediately in case

of an error in the machine.

• ON: Press the switch. The engine stops and

“EMERGENCY STOP” is displayed at the upper

right of the home screen.

• OFF: Turn the switch clockwise (in the arrow direction on

the right illustration).

The switch returns to the original position.

NOTES

When restarting the engine after an emergency stop, be sure to turn the engine emergency stop switch to the “OFF” position before starting the engine.

[7] OVERRIDE SWITCH

The maintenance switch has the function of disabling the moment limiter function. While this switch is at the “ON” (cancel) position, the crane does not automatically stop by the moment limiter, falling into very dangerous conditions. Any crane operation in such conditions will result in dropping of hoisted load, breakage of crane boom, and/or machine tipping, and may cause a serious accident resulting in death or serious injury. Use this switch only when the moment limiter, which detects the crane conditions, failures or when a load test of the crane is conducted. Key for the switch must be detached during normal operations. In particular, never use in the following ways.

• When lifting a load, do not hoist the hook while turning this switch to the “ON” (cancel)

position.

Even if a load of hoisted load exceeds the rated total load, the moment limiter cannot detect

it, resulting in dropping of hoisted load, boom breakage and machine tipping due to cutting of the winch wire rope.

• After the moment limiter detects that the rated total load is exceeded during crane operation

and automatically stops the operation, do not perform hoisting operation, boom lowering operation and boom extension operation while turning this switch to the “ON” (cancel) position. Such operations cause boom breakage and machine tipping.

• Use the hook storage switch when storing the hook. If the override switch is used when

performing hook hoisting operation, automatic stop is not made even in an over-wind condition.

Use this switch only when the moment limiter fails or a load

test of the crane is conducted.

• ON (Cancel): Insert the key into the switch. Turn the

key clockwise and retain the key at that

position. The activation stop function is

canceled while the key is maintained at

the ON position.

The key automatically returns to the

“OFF” (Automatic) position when you

release your hand.

• OFF (Automatic): The operation stop function is enabled

at this position and the key can be

inserted and removed.

NOTES

If this switch is placed in the “ON” (Cancel) position, the red lamp of the tri-colour revolving working status lamp turns on.

2.3 MOMENT LIMITER (OVERLOAD DETECTOR)

2.3.1 CONFIGURATION OF MOMENT LIMITER

(1) Boom length meter (left side of boom)

(2) Boom angle meter (left side of boom)

(3) Pressure sensor (derricking cylinder section) (2 pieces)

(4) Over hoist detector (side of boom tip)

(5) Tri-colour revolving working status lamp

(A) Red revolving working status lamp (warning lamp when load factor is 100% or more)

(B) Yellow revolving working status lamp (alarm lamp for a load capacity ratio between 90 and less

than 100%)

(6) Moment limiter display (machine monitor)

(7) Maintenance switch

(8) Override switch

2.3.2 FUNCTIONS OF MOMENT LIMITER

• Do not remove, disassemble, or repair the detector. In addition, do not reposition the detector

from the original location to another.

• When an object hits the detector or damage is found on it, be sure to check the operating

condition of the automatic stop. If an abnormality occurs during automatic stop operation due to a failed detector, be sure to repair it.

• The slewing operation does not stop automatically when the crane is overloaded. When

overloaded, do not perform slewing operation.

• When the boom is approaching the stop position while in operation, be sure to lower the

operation speed of the boom. Operating the boom at high speeds may result in a serious accident, such as death or serious injury. The boom may fail to stop at the predetermined position, causing the machine to overturn.

• The override switch has the function of disabling the

moment limiter function. While this switch is at the “ON” (cancel) position, the crane does not automatically stop by the moment limiter, falling into very dangerous conditions. Any crane operation in such conditions will result in dropping of hoisted load, breakage of crane boom, and/or machine tipping, and may cause a serious accident resulting in death or serious injury. Use this switch only when the moment limiter fails or a load test of the crane is conducted. Key for the switch must be detached during normal operations.

The moment limiter is a safety device for preventing accidents arising from overload, such as dropping

hoisted loads, damaging the boom or overturning the machine.

Before starting crane operations, be sure to inspect operation of the moment limiter to make sure that

there is no abnormality.

MECHANISM OF MOMENT LIMITER

The moment limiter knows the current posture by the boom angle

meter and boom length meter and calculates “Rated total load” in

the current condition by further knowing the number of wire falls

(input by an operator).

When the load is actually hoisted at this time, the moment limiter

calculates the “actual load” (hoisted load) according to the

pressure value from the pressure sensor of the derricking

cylinder section. The moment limiter makes comparison and

calculation on “Rated total load” and “Actual load” (hoisted load)

that were calculated in the current figure. Then, it issues an alarm

if the result is as follows: “Rated total load / Actual load = 90 –

100%”.

If the calculation result is “Rated total load / Actual load = 100% or

more”, the moment limiter issues an alarm and at the same time

automatically stops the boom operation.

The overload stop accuracy satisfies the stop accuracy of the

following formula by slowly lowering the boom.

Stop accuracy =

Where, A: Total weight of suspended load + hook + hoisting attachment

B: Rated total load of working radius (actually measured radius) where the boom stopped due

to overload

A - B

× 100 < +10%

MOMENT LIMITER ERROR MESSAGE DISPLAY

The moment limiter displays an error code on the machine monitor to notify the operator if an abnormality

occurs in the boom angle meter, boom length meter or pressure sensor, if wiring is cut, if connectors

come off etc.

If any error code is displayed, immediately stop using crane.

For error codes, causes of abnormalities and remedial action refer to “8.5 List of Error Codes”.

2.3.3 MOMENT LIMITER OPERATION AND CANCELLING (RECOVERY)

The moment limiter is a device that is provided for measures available for an emergency case. In actuality,

any operations relying on the device will incur danger.

Pay sufficient attention during operations so that the crane will not stop automatically.

[1] PROHIBITED OPERATIONS AFTER AUTOMATIC STOP

If the crane has stopped automatically due to overload, the following crane operations are prohibited. Disobeying this rule may cause critical danger due to tipping of the machine or breakage of the boom, for example.

• Boom lowering operation • Boom hoisting operation • Boom extending operation

• Hook hoisting operation

[2] RECOVERY OPERATION FROM AUTOMATIC STOP

When an automatic stop occurs, recovery cannot be performed unless you lower the load capacity ratio to the safe region of less than 90% (tri-colour revolving working status lamp: green). If the moment limiter displays the load factor of 90% or more, be sure to perform crane operations carefully by turning the engine speed to low speed. Performing crane operations at a high engine speed could cause critical danger; in this case, the hoisted load will waggle resulting in overload, which could lead to tipping of the machine or breakage of the crane, for example.

When load factor is “less than 90%”

When the hoisted load is less than 90% of the rated total load, the

green colour of the rotating warning lamp which shows a normal

use condition turns on.

For a load capacity ratio: 90% or more and less than 100%

In the case of lifting loads being 90% (warning alarm) of the

Rated Total Load, the illuminated green revolving working status

lamp turn yellow, and an alarm goes off intermittently to notify

operators or people around that the lifting load is approaching the

Rated Total Load.

For a load capacity ratio: “Greater than 100%”

If the hoisted load exceeds 90% (prediction alarm) of the rated

total load and the hoisted load becomes 100% or more of the

rated total load by further continuing crane operations, the

tri-colour revolving working status lamp changes from the yellow

colour to the red colour, the alarm sounds continuously and

subsequent crane action stops automatically.

• Hook hoisting • Boom extension • Boom lowering • Boom hoisting

RECOVERY OPERATION FROM AUTOMATIC STOP

To recover from the overload condition, perform one of the following so as to operate the crane in reverse

order when it is automatically stopped.

(1) Unwind the wire rope to lower the hook, and place the suspended load on the ground.

(2) Retract the boom.

[When recovering by boom hoisting operation]

In the case of an automatic stop, when hoisting of the boom

is unavoidable, the boom hoist operation is possible only

while keeping the maintenance switch in the “ON” position.

To return to the “OFF” position, also return the boom

hoisting lever.

Only use this switch when an automatic stop has occurred through entry into the overload region while lowering or extending the boom. Do not use under normal conditions or when lifting clear from the ground. If you use this switch when lifting from the ground, there is a risk of serious accidents such as the machine being damaged or overturning.

NOTES

While the maintenance switch is “ON”, the machine operates as follows.

• The engine speed decreases.

• The continuous buzzer tone sounds.

• The tri-colour revolving working status lamp illuminates in red.

2.3.4 MOMENT LIMITER FUNCTIONS

[1] MONITOR DISPLAY OF MOMENT LIMITER

(1) Load capacity ratio display

(2) Actual load/rated total load display

(3) Boom angle display

(4) Working radius/rated working radius display

(5) Boom length display

(6) Lifting height display

(7) Number of wire falls display

(8) Boom angle lower limit display

(9) Boom angle upper limit display

(10) Working radius upper limit display

(11) Lifting height upper limit display

(12) Lifting height upper limit switch

(13) Boom angle upper limit/lower limit switch

(14) Working radius upper limit switch

(15) Setting check/canceling switch

[2] EXPLANATION OF MOMENT LIMITER DISPLAY

1. Actual load display

Continually displays the actual load of the hoisted load during crane operations. The actual load equals the total weight of the hook, hoisting attachment, and hoisted load. When no load is applied, the normal indication becomes “0.0” to “0.1”. If the indication does not fall within the above range, contact us or our sales service agent.

NOTES

• Due to the structure of load detection, a numerical value of actual load display changes when the boom is raised and lowered. Although the numerical value of the actual load changes on a higher side when boom raising operation is performed, this is not a fault.

• When the crane stops, the numerical value of actual load

display changes if there is swing of load.

2. Rated total load display

The rated total load (i.e. total weight of hook, hoisting attachment, and hoisted load) which the crane can currently hoist is displayed. It is calculated according to the conditions including the number of wire falls of the hook and the working radius.

3. Actual working radius display

The current actual working radius is continually displayed during crane operations. The actual working radius refers to the horizontal distance from the centre of slewing of the crane to the centre of the hook. The deflection amount of the boom due to load is not included.

4. Rated working radius display

The current rated working radius is continually displayed during crane operations. The rated working radius refers to the maximum working radius calculated from the boom length and actual load.

5. Boom length display

Continually displays the current boom length during crane operations. The boom length refers to the straight-line distance from the boom foot pin to the sheave pin at the front end of the boom.

6. Lifting height display

Continually displays the maximum lifting height of the current

boom state during crane operations.

Lifting height refers to the vertical distance from the ground to the

bottom of the hook.

7. Boom angle display

Continually displays the current boom angle during crane

operations.

The boom angle refers to the angle between the boom and

horizontal line.

8. Over-hoisting display

If the hook falls into an over-hoisting state during crane

operations, the mark flashes in red to give over-hoisting warning

and automatically stops hook hoisting and boom extension

actions.

During hook storage operation, the mark flashes in red in a hook

stored state. However, this is not an abnormality.

9. Over-lowering display

If the hook falls into an over-lowering state during crane

operations, the mark flashes in red to give over-lowering warning

and automatically stops the hook lowering action.

10. Load capacity ratio display

The load factor state of the moment limiter load is illuminated on

the bar according to the load factor change.

• Load capacity ratio display 100 – 110 (load capacity ratio

“greater than or equal to 100%”): red

• Load capacity ratio display 90 (load capacity ratio “90% or

more and less than 100%”): yellow

• Load capacity ratio display 0 – 80 (load capacity ratio “less

than 90%”): green

[3] OVERLOAD ALARM

A. Safety area (“Actual Load” is less than 90% of “Rated

Total Load”)

• The tri-colour revolving working status lamp illuminates in

green.

B. Prediction alarm (“Actual Load” is 90 – less than 100%

of “Rated Total Load”)

• The tri-colour revolving working status lamp illuminates in

yellow.

• The alarm generates intermittent sound “peep”.

C. Limit alarm (the Actual Load is greater than or equal to

100% of the Rated Total Load)

• The tri-colour revolving working status illuminates in red.

• The alarm generates continuous sound “peep”.

• Operation of the boom’s danger side stops automatically.

• When the load factor is 110% or more, “Load factor 110%” LED (red) turns on.

D. Resetting Limit Alarm Automatic Stop

When an automatic stop occurs, immediately recover from the overload.

For recovery operations, refer to “Operations 2.3.3 [2] Recovery Operation from Automatic Stop”.

[4] WORKING RANGE LIMIT DEVICE

When the boom is approaching the predetermined working range limit, the alarm goes off to alert the

operator and people around the machine.

The set values for the working range limit will remain memorized even after the starter switch is set to the

“OFF” position.

When the working range limit is specified, the machine

operation is as follows:

A. Safety area

• The applicable working range limit display illuminates in

orange.

• The tri-colour revolving working status lamp illuminates

in green.

B. Warning alarm

• The applicable working range limit display flashes in

orange.

• The announcement is given and the alarm generates

intermittent sound “peep”.

The alarm buzzer is activated only when the operation

lever is turned on.

• The tri-colour revolving working status lamp illuminates

in green.

C. Limit alarm

• The applicable working range limit display flashes in

orange.

• The tri-colour revolving working status lamp illuminates

in yellow.

• The announcement is given and the alarm generates

continuous sound “peep”.

The alarm buzzer is activated only when the operation

lever is turned on.

• Operation of the boom’s danger side stops automatically.

1. Lifting height upper limit switch

Use this switch to set or reset the upper limit value for the lifting

height.

While the lifting height limit is imposed by detecting the boom tip

height, the display panel displays the lifting height when the hook

is hoisted up to the over-hoisting detected state.

[Setting]

Set the boom to the desired lifting height in a condition in which

no upper limit value is set, and press and hold the switch.

The monitor display changes to the orange color and the lifting

height is set as the upper limit value.

NOTES

• Before performing a practical operation, be sure to check if the boom automatically stops when it reaches the specified lifting height limit. If the boom does not stop, set the upper limit for the lifting height again by repeating the above procedure.

• When the boom is in the warning alarm zone or upper limit stop state, an alarm sounds intermittently only if raising operation or extension operation is performed.

• The set value is memorized when the starter switch is turned to the “OFF” position.

When the boom is in the prediction zone or upper limit stop state in a condition in which the lifting height is

set, the monitor display illuminates in orange.

[Resetting]

Press and hold the switch in a condition in which the upper limit value is set. The monitor display changes

to the black colour and the upper limit value setting is cancelled.

2. Boom angle upper limit/lower limit switch

Use this switch to set or cancel the boom angle upper limit value

and lower limit value.

[Setting]

Set the boom to the desired angle in a condition in which no

upper limit value and lower limit value are set, and press the

switch. The green display appears and the upper limit and lower

limit can be selected. Each time the switch is pressed, the upper

limit and lower limit change. After selecting the one you wish to

set, press and hold the switch.

The upper limit value on the monitor display changes to the

orange colour and the boom angle is set as the upper limit value

or lower limit value.

NOTES

• Before performing a practical operation, be sure to check if the boom automatically stops at the specified angle. If the boom does not stop, set the boom angle again by repeating the procedure mentioned above.

• An alarm sounds intermittently when the boom, which is in the upper limit, is in the prediction zone or upper limit stop state and only if the raising operation is performed, and when the boom, which is in the lower limit, is in the prediction zone or lower limit stop state and only if the lowering operation is performed.

• The set value is memorized when the starter switch is turned to the “OFF” position.

When the boom is in the prediction zone or upper limit stop state in a condition in which the boom angle

upper limit or lower limit is set, the monitor display illuminates in orange.

[Resetting]

Press the switch in a condition in which the upper limit value or lower limit value is set. The orange display

section can be selected in white frame. Each time the switch is pressed, the selection changes. After

selection, press and hold the switch. The monitor display changes to the black colour and the upper limit

value or lower limit value setting is canceled.

3. Working radius upper limit switch

Use this switch to set or reset the upper limit for the working

radius.

[Setting]

Set the boom to the desired working radius in a condition in which

no upper limit value is set, and press and hold the switch.

The upper limit value on the monitor display changes to the

orange colour and the working radius is set as the upper limit

value.

NOTES

• Before performing a practical operation, be sure to check if the boom automatically stops at the specified working radius. If the boom does not stop, set the working radius again by repeating the above procedure.

• When the boom is in the prediction alarm zone or upper limit stop state, an alarm sounds intermittently only if lowering operation or extension operation is performed.

• The set value is memorized when the starter switch is turned to the “OFF” position.

When the boom is in the prediction zone or upper limit stop state in a condition in which the working radius

upper limit is set, the monitor display illuminates in orange.

[Resetting]

Press and hold the switch in a condition in which the upper limit value is set. The monitor display changes

to the black colour and the upper limit value or lower limit value setting is canceled.

4. Setting check/cancelling switch

(1) Setting check

Use this switch to check all the set values set in the above steps 1

- 3.

• Press this switch.

All the set values set in the above steps 1 - 3 are displayed for

about 5 seconds.

The boom angle upper limit is displayed in the boom length.

(2) Setting cancel

Use this switch to cancel all the set values set in the above steps

1 - 3.

• Press and hold this switch.

All the set values set in the above steps 1 - 3 are cancelled.

[5] OVER-HOISTING PREVENTION DEVICE

CAUTION

When raising the hook, be careful of clearance between the hook and boom. When the boom is extended, the hook is also wound up. Perform boom extension operation while always checking the hook height.

If the hook height becomes excessively high while it is hoisted or

the boom is extended, the following occur:

• The hook displayed on the monitor flashes in red.

• When hook hoisting or boom extension operation is performed,

the alarm issues an intermittent sound “peep”.

• Hook hoisting and boom extension actions stop automatically.

When an automatic stop occurs, immediately recover from the stop.

For recovery operation, perform hook lowering operation and boom

contraction operation.

[6] EXCESSIVE UNWIND DETECTOR

When the hook is lowered and length of wire rope in the winch

drum becomes short:

• The winch displayed on the monitor flashes in red.

•

When hook lowering operation is performed, the alarm issues

an intermittent sound “peep”.

•

The hook lowering action is automatically stopped.

When an automatic stop occurs, immediately recover from the

stop.

For recovery operation, perform hook hoisting operation.

[7] NUMBER OF WIRES FALLS CHANGE DISPLAY

• Before changing the number of wire falls with the switch for changing the number of wire falls, be sure to stop the ongoing crane operation.

Doing this during crane operation may result in unexpected accidents.

• Before starting a crane operation, make sure that the number of wire falls set for the moment limiter agrees with the actual number. Mistaking the number of wire falls may cause serious accidents to occur.

A safety load per one wire rope is specified.

The number of wire falls must be determined according to the

maximum load to be lifted.

Always make sure that the number of wire falls indicated on the

monitor agrees with the actual number.

This machine is equipped with a hook that can be used for both

two and four wire ropes hung as the standard specifications.

The set value for the number of wire falls will remain memorized

even after the starter switch is set to the “OFF” position.

For changing the number of wire falls, refer to “Operation 2.1.1

[1-1] Hook Sling Number Change”.

[8] BOOM LOWER LIMIT DETECTION

When the boom length is “3.3 m” or longer, the boom lowering action stops automatically so that the boom

does not fall below the horizontal line.

[9] STATIONARY AND TRAVEL MODE CHANGE DISPLAY

Travel with a lifted load is in principle prohibited because it is very unstable and involves danger. When there is no alternative but to perform travelling with hoisted load, refer to “Operation 3.19 Perform Travelling With Hoisted Load” and strictly observe the rated total loads, operation methods and travel postures for travelling with hoisted load. Unless these precautions in travelling with a lifted load are observed, serious physical injury may be caused.

When travelling with a lifted load, use this to change from the

stationary mode to the travel mode.

• Press and hold the switch. The rated load setting changes to

“Travel mode” and the monitor display changes.

• Press and hold this switch again. The rated load setting

changes to “Stationary mode” and the monitor display

changes.

NOTES

When the boom length is “5.1 m” or longer, travel is prohibited and travel mode cannot be set. When setting the mode to the travel mode, set the boom length to “5.0 m” (two stage boom) or less.

2.3.5 MAINTENANCE SWITCH

For details concerning the switch, refer to “Operation 2.2 [5] Maintenance Switch”

2.4 OVER-HOISTING PREVENTION DEVICE

CAUTION

When raising the hook block, be careful of clearance between the hook block and boom. Also, the hook block can be raised when the boom is extended. Perform boom extension operation while always checking the hook block height.

(1) Hook block

(2) Over-hoisting detector

(3) Weight

(4) Boom

The over-hoisting prevention device, when hoisting the hook

block (1) or extending the boom (4), automatically stops hook

block (1) hoisting and boom (4) extension actions and prevents

any further action, if the hook block (1) nears the boom (4) tip

and pushes up the weight (3). At the same time, only when the

hook hoisting and boom extending operations are performed,

the over-hoisting prevention device sounds the buzzer

intermittently to warn over-hoisting.

When the warning buzzer sounds, immediately operate the

right work equipment operation lever to the “Lowering” side

(pushing forward) or the left work equipment operation lever to

the “Contraction” side (pulling toward you) to lower the hook

block (1).

2.5 OPERATION LEVERS AND PEDALS

(1) Lock lever

(5) Travel lever

(2) Left work equipment operation lever

(3) Right work equipment operation lever

(4) Accelerator pedal

(6) Speed-up pedal

(7) Levelling instrument

[1] LOCK LEVER

• When standing up from the operator’s seat, place the lock lever securely in the lock position.

If the lock lever is not in the lock position, and inadvertent contact is made with the operation levers and operation pedals, serious physical injury may result.

• When pulling up or pushing down the lock lever, be careful not to contact the operation lever of the work equipment.

This lever (1) locks crane operation and travelling.

When the lever is pulled up, the lever stand springs up and

enters the lock position (L).

Since this lock lever is of hydraulic lock type, the work

equipment operation levers will move even when set to the

lock position (L), but the crane and travelling motor will not

move.

NOTES

The engine cannot be started when the lock lever is in the free position (F). Set the lock lever to the lock position (L) and then operate the starter switch.

[2] LEFT WORK EQUIPMENT OPERATION LEVER

[3] RIGHT WORK EQUIPMENT OPERATION LEVER

• The operation pattern is set according to the standard operation method. If you desire to change the operation pattern, please request us or our sales service agency.

• When the operation pattern is changed, the operation nameplate needs to be replaced with

the one which matches the machine movement.

Operate the revolving upper structure and the boom

extension/contraction with the left work equipment operation

lever.

Slewing operation

• (a) Right slewing: Pull the lever in the right direction.

• (b) Left slewing: Push the lever in the left direction.

Expansion and contraction operation of boom

• (c) Contraction of boom: Pull the lever rearward.

• (d) Expansion of boom: Push the lever forward.

• (N) Neutral: Release your hand from the lever.

The revolving upper structure and boom length retain their positions as they stop.

Use the right work equipment operation lever to perform

winch operation and boom derricking operation.

Winch operation

• (e) Hoisting: Pull the lever rearward.

• (f) Lowering: Push the lever forward.

Boom derricking operation

• (g) Lowering of boom: Push the lever in the right direction.

• (h) Raising of boom: Pull the lever in the left direction.

• (N) Neutral: Release your hand from the lever.

The hook block and boom angle retain their positions as they stop.

[4] ACCELERATOR PEDAL

Be aware of swinging loads etc. when using the accelerator pedal. Do not use when travelling with a hoisted load as there is a risk of overturning. Excessively raising the output power for operation may lead to operational errors, causing serious physical injury.

Use this lever to adjust the engine speed or output during .crane

operation.

• (a) Low idling: Release your foot from the pedal.

(b) Full rotation: Depress the pedal fully.

•

CAUTION

When E mode is selected, full rotation does not occur even if the pedal is depressed to position (b).

[5] TRAVEL LEVER

When the track frame is facing backwards, the forward and backward driving operations will be reversed. When operating the travel lever, check whether the track frame is facing forwards or backwards. (When the sprocket (a) side is at the rear, the track frame faces forward.)

This lever is used to drive the machine.

• (a) Forward motion: lever pushed forward

(b) Rearward motion: lever pulled towards the operator

•

(N) Neutral: the machine is stopped.

•

[6] SPEED-UP PEDAL

The vehicle speed will increase when this pedal is

depressed.

[7] LEVELLING INSTRUMENT

If crane operation is performed with the machine tilted, tripping may be caused. Search a place, while looking at the levelling instrument, where the machine body is in a level state before starting crane operation. If work is unavoidably performed on a slope, place planking or lay earth on the ground to make the ground level.

This equipment (9) displays the inclination status of the

machine.

The inclination and direction of the machine can be

determined from the position of the air bubbles.

Use this to check whether the machine body stopped on the

work site is in a level condition.

2.6 LOCKING COVER

Use the starter switch key to open and close the locking

cover.

Method of opening and closing the locking cover

Securely insert the key to its root (A) before turning.

If the key is turned when not fully inserted, it may be broken.

When opening

1. Insert the key.

2. Turn the key and the cover can be opened.

When locking

1. Close the cover.

2. Turn the key and pull it out.

2.7 ENGINE BONNET

• When inspecting and servicing the inside of the engine bonnet, open the bonnet to its upper extent and be sure to fix the bonnet with the stopper.

• If the boom is raised while the engine bonnet (A) is open, there is a risk of damaging the engine bonnet. When it is necessary to raise the boom, open engine bonnet (B) only.

• When closing the engine bonnet (A), take care not to trap your hands with the counterweight.

CAUTION

Be sure to keep the bonnet locked except when opening it. The locking state can be confirmed by the direction of the key groove on the opening knob.

1. Turn the key in the engine bonnet release knob (1) or

knob (2) to (O) and push it to release the lock.

Use according to the inspection and maintenance

circumstances.

• (O): Open

• (L): Lock

2. Push up the bonnet (3) completely. The stopper (4)

functions and the bonnet (3) is fixed.

3. To close the bonnet (3), pull the bonnet support stopper

(4) to the free position (F), gently lower the bonnet and

push the bonnet to the lock position (L).

Maeda CC423S-1 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual