Multiquip HHXD5 User Manual

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OPERATION MANUAL

SERIES

MODEL HHXD5

RIDE-ON TROWEL

(B & S VANGUARD DM 950 DT DIESEL ENGINE)

Revision #2 (05/04/12)

To ﬁnd the latest revision of this

publication, visit our website at:

www.multiquip.com

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

PN: 23323

PROPOSITION 65 WARNING

Engine exhaust and some of its constituents, and some dust created by power sanding, sawing, grinding, drillingandotherconstructionactivities contains chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. Some examples of these chemicals are:

Leadfromlead-basedpaints. Crystallinesilicafrombricks. Cementandothermasonryproducts. Arsenicandchromiumfrom chemically treatedlumber.

Your risk from these exposures varies, dependingonhowoftenyoudothistype of work. To reduce your exposure to these chemicals: work in aALWAYS well ventilated area, and work with

approved safety equipment, such as

dust masks that are specially designed to filter out microscopic particles.

PAGE 2 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

SILICOSIS/RESPIRATORY WARNINGS

WARNING

SILICOSIS WARNING RESPIRATORY HAZARDS

Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give off dust or mists containing crystalline silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Repeated and/or substantial inhalation of airborne crystalline silica can cause serious or fatal respiratory diseases, including silicosis. In addition, California and some other authorities have listed respirable crystalline silica as a substance known to cause cancer. When cutting such materials, always follow the respiratory precautions mentioned above.

WARNING

Grinding/cutting/drilling of masonry, concrete, metal and other materials can generate dust, mists and fumes containing chemicals known to cause serious or fatal injury or illness, such as respiratory disease, cancer, birth defects or other reproductive harm. If you are unfamiliar with the risks associated with the particular process and/or material being cut or the composition of the tool being used, review the material safety data sheet and/or consult your employer, the material manufacturer/supplier, governmental agencies such as OSHA and NIOSH and other sources on hazardous materials. California and some other authorities, for instance, have published lists of substances known to cause cancer, reproductive toxicity, or other harmful effects.

Control dust, mist and fumes at the source where possible. In this regard use good work practices and follow the recommendations of the manufacturers or suppliers, OSHA/NIOSH, and occupational and trade associations. Water should be used for dust suppression when wet cutting is feasible. When the hazards from inhalation of dust, mists and fumes cannot be eliminated, the operator and any bystanders should always wear a respirator approved by NIOSH/MSHA for the materials being used.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 3

TABLE OF CONTENTS

HHXD5 Ride-On Trowel

Proposition 65 Warning ........................................... 2

Silicosis/Respiratory Warnings ................................ 3

Table Of Contents .................................................... 4

Training Checklist .................................................... 6

Daily Pre-Operation Checklist ................................. 7

Safety Information ..............................................8-13

Dimensions/Speciﬁcations ................................ 14-15

General Information ............................................... 16

Controls And Indicators .................................... 17-19

Engine Components (Diesel) ................................. 20

Setup ..................................................................... 21

Inspection .............................................................. 22

Operation .......................................................... 23-25

Maintenance ..................................................... 26-44

Decommissioning Trowel ....................................... 45

Fuel System Diagram ............................................ 46

Wiring Diagram (Engine) .................................. 48-49

Troubleshooting ................................................ 50-53

NOTICE

Speciﬁcations and part numbers are subject to change without notice.

PAGE 4 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

NOTES

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 5

TRAINING CHECKLIST

This checklist will list some of the minimum requirements for machine maintenance and operation. Please feel free to detach it and make copies. Use this checklist whenever a new operator is to be trained or it can be used as a review for more experienced operators.

Training Checklist

No, Description OK? Date

3 Fuel system, refueling procedure.

4 Operation of spray and lights.

7 Emergency stop procedures.

9 Maintaining a hover.

10 Maneuvering.

11 Pitching.

12 Matching blade pitch. Twin-Pitch™

Read operation manual

completely.

Machine layout, location of

components, checking of engine

and hydraulic oil levels.

Operation of controls (machine

not running).

Safety controls, safety stop switch

operation.

Startup of machine, pre-heat,

engine choke.

13 Concrete ﬁ nishing techniques.

14 Shutdown of machine.

15 Lifting of machine (lift loops).

16 Machine transport and storage.

PAGE 6 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

DAILY PRE-OPERATION CHECKLIST

Daily Pre-Operation Checklist

1 Engine oil level

2 Hydraulic oil level

3 Radiator coolant level

4 Condition of blades

5 Blade pitch operation

6 Safety stop switch operation

7 Steering control operation

     

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 7

SAFETY INFORMATION

Do not operate or service the equipment before reading

Potential hazards associated with the operation of this

the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others.

SAFETY MESSAGES

The four safety messages shown below will inform you about potential hazards that could injure you or others. The safety messages speciﬁ cally address the level of exposure to the operator and are preceded by one of four words:

DANGER, WARNING, CAUTION or NOTICE.

SAFETY SYMBOLS

DANGER

Indicates a hazardous situation which, if not avoided,

WILL result in DEATH or SERIOUS INJURY.

WARNING

Indicates a hazardous situation which, if not avoided,

COULD result in DEATH or SERIOUS INJURY.

CAUTION

equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages.

Symbol Safety Hazard

Lethal exhaust gas hazards

Explosive fuel hazards

Burn hazards

Rotating parts hazards

Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE INJURY.

NOTICE

Addresses practices not related to personal injury.

Pressurized fluid hazards

Hydraulic fluid hazards

PAGE 8 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

GENERAL SAFETY

NOTICE

This equipment should only be operated by trained and

Whenever necessary, replace nameplate, operation and

accident due to equipment modiﬁ cations. Unauthorized

recommended by Multiquip for this equipment. Damage

keep

Also, know the phone numbers

ﬁ re department.

SAFETY INFORMATION

CAUTION

 NEVER operate this equipment without proper protective

clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations.

 Avoid wearing jewelry or loose ﬁ tting clothes that may

snag on the controls or moving parts as this can cause serious injury.

 NEVER operate this equipment when not

feeling well due to fatigue, illness or when under medication.

 NEVER operate this equipment under the

inﬂ uence of drugs or alcohol.

 ALWAYS clear the work area of any debris, tools, etc.

that would constitute a hazard while the equipment is in operation.



qualiﬁ ed personnel 18 years of age and older.



safety decals when they become difﬁ cult read.

 Manufacturer does not assume responsibility for any

equipment modiﬁ cation will void all warranties.

 NEVER use accessories or attachments that are not

to the equipment and/or injury to user may result.

 ALWAYS know the location of the nearest

ﬁ re extinguisher.

 ALWAYS know the location of the nearest

ﬁ rst aid kit.

 ALWAYS know the location of the nearest phone or

a phone on the job site.

of the nearest ambulance, doctor and This information will be invaluable in the case of an emergency.

 No one other than the operator is to be in the working

area when the equipment is in operation.

 DO NOT use the equipment for any purpose other than

its intended purposes or applications.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 9

TROWEL SAFETY



NOTICE

keep the machine in proper running condition.

store equipment properly when it is not being used. Equipment should be stored in a clean, dry location out of the reach of children and unauthorized personnel.

Association of Equipment Manufacturers (AEM) can be

engine is hot. High pressure boiling water will gush out

SAFETY INFORMATION

DANGER

 Engine fuel exhaust gases contain poisonous carbon

monoxide. This gas is colorless and odorless, and can cause death if inhaled.

 The engine of this equipment requires an adequate free

ﬂ ow of cooling air. NEVER operate this equipment in any enclosed or narrow area where free ﬂ ow of the air is restricted. If the air ﬂ ow is restricted it will cause injury to people and property and serio u s dama g e to t he equipment or engine.

NEVER operate the equipment in an explosive atmosphere or near combustible materials. An explosion or ﬁ re could result causing severe

bodily harm or even death.

WARNING

If applicable, NEVER use your hand to ﬁ nd

hydraulic leaks. Use a piece of wood or cardboard. Hydraulic ﬂ uid injected into the skin must be treated by a knowledgable physician immediately or severe injury or death can occur.

DANGEROUS

GAS FUMES

 ALWAYS

 Fix damage to machine and replace any broken parts

immediately.

 ALWAYS

 A safety manual for operating and maintenance

personnel of concrete power trowels produced by the

obtained for a fee by ordering through their website at www.aem.org.

Order FORM PT-160

ENGINE SAFETY

WARNING

 D O NOT pl ace hands o r fi nge rs in side e ngi ne

compartment when engine is running.

 NEVER operate the engine with heat shields or

guards removed.

 Keep ﬁ ngers, hands hair and clothing away

from all moving parts to prevent injury.

 DO NOT remove the radiator cap while the

ALWAYS keep clear of rotating or moving

parts while operating the trowel.

NEVER di sco nne ct an y emerg enc y

or safety devices. These devices are

intended for operator safety. Disconnection of these devices can cause severe injury, bodily harm or even death. Disconnection of any of these devices will void all warranties.

CAUTION

 NEVER allow passengers or riders on the trowel during

operation.

 NEVER lubricate components or attempt service on a

running machine.

 NEVER place your feet or hands inside the guard rings

while starting or operating this equipment.

PAGE 10 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

of the radiator and severely scald any persons in the general area of the trowel.

 DO NOT remove the coolant drain plug

while the engine is hot. Hot coolant will gush out of the coolant tank and severely scald any persons in the general area of the trowel.

 DO NOT remove the engine oil drain plug while the

engine is hot. Hot oil will gush out of the oil tank and severely scald any persons in the general area of the trowel.

CAUTION

 NEVER touch the hot exhaust manifold,

mufﬂ er or cylinder. Allow these parts to cool before servicing equipment.

NOTICE

BATTERY SAFETY

drop the battery. There is a possibility that the

keep the battery charged. If the battery is not

charge battery if frozen. Battery can explode.

environment to avoid the risk of a dangerous concentration

NEGATIVE battery terminal

keep battery cables in good working condition.

SAFETY INFORMATION

 NEVER run engine without an air ﬁ lter or with a dirty air

ﬁ lter. Severe engine damage may occur. Service air ﬁ lter frequently to prevent engine malfunction.

NEVER tamper with the factory settings

of the engine or engine governor. Damage to the engine or equipment can result if operating in speed ranges above the maximum allowable.

FUEL SAFETY

DANGER

 DO NOT start the engine near spilled fuel or combustible

ﬂ uids. Fuel is extremely ﬂ ammable and its vapors can cause an explosion if ignited.

 ALWAYS refuel in a well-ventilated area, away from

sparks and open ﬂ ames.

 ALWAYS use extreme caution when working with

ﬂ ammable liquids.

 DO NOT ﬁ ll the fuel tank while the engine is running

or hot.

DANGER

 DO NOT

battery will explode.

 DO NOT expose the battery to open ﬂ ames,

sparks, cigarettes, etc. The battery contains combustible gases and liquids. If these gases and liquids come into contact with a ﬂ ame or spark, an explosion could occur.

WARNING

 A LWAYS wear safety glasses when

handling the battery to avoid eye irritation. The battery contains acids that can cause injury to the eyes and skin.

 Use well-insulated gloves when picking up

the battery.

 ALWAYS

charged, combustible gas will build up.

 DO NOT

When frozen, warm the battery to at least 61°F (16°C).

 DO NOT overﬁ ll tank, since spilled fuel could ignite if it

comes into contact with hot engine parts or sparks from the ignition system.

 Store fuel in appropriate containers, in well-ventilated

areas and away from sparks and ﬂ ames.

 NEVER use fuel as a cleaning agent.

DO NOT smoke a round or ne ar th e

equipment. Fire or explosion could result from fuel vapors or if fuel is spilled on a hot engine.

 ALWAYS recharge the battery in a well-ventilated

of combustible gases.

 If the battery liquid (dilute sulfuric acid)

comes into contact with clothing or skin, rinse skin or clothing immediately with plenty of water.

 If the battery liquid (dilute sulfuric acid) comes into

contact with eyes, rinse eyes immediately with plenty of water and contact the nearest doctor or hospital to seek medical attention.

CAUTION

 ALWAYS disconnect the

before performing service on the equipment.

 ALWAYS

Repair or replace all worn cables.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 11

SAFETY INFORMATION

TRANSPORTING SAFETY

TOWING SAFETY

make

Make sure the hitch and coupling of the towing vehicle

NEVER

tow a trailer with defective hitches, couplings, chains, etc.

Trailer tires should be inﬂ ated to 50 psi cold.

safety

attach trailer’s safety chains to towing

make sure the vehicle and trailer directional,

The maximum speed for highway towing is 55 MPH unless posted otherwise. Recommended off-road towing is not to

Avoid sudden stops and starts. This can cause skidding,

CAUTION

 NEVER allow any person or animal to

stand underneath the equipment while lifting.

 Ride-on trowels are very heavy and

awkward to move around. Use proper heavy lifting procedures and DO NOT attempt to lift the trowel by the guard rings.

NOTICE

 The easiest way to lift the trowel is to utilize the lift loops

that are welded to the frame. These lift loops are located to the left and right sides of the operator’s seat.

A strap or chain can be attached to these lift loops,

allowing a forklift or crane to lift the trowel up onto and off of a slab of concrete. The strap or chain should have a minimum of 2,000 pounds (1,000 kg) lifting capacity and the lifting gear must be capable of lifting at least this amount.

 NEVER transport trowel with ﬂ oat pans attached unless

safety catches are used and are speciﬁ cally cleared for such transport by the manufacturer.

 NEVER hoist the trowel more than three feet off the

ground with ﬂ oat pans attached.

 Before lifting, make sure that the lift loops are not

damaged.

 Always make sure crane or lifting device has been

properly secured to the lift loops of the equipment.

 ALWAYS shutdown engine before transporting.

CAUTION

 Check with your local county or state safety

towing regulations, in addition to meeting

Department of Transportation (DOT) Safety Towing Regulations, before towing

your trowel.

 In order to reduce the possibility of an accident while

transporting the trowel on public roads, ALWAYS sure the trailer that supports the trowel and the towing vehicle are mechanically sound and in good operating condition.

 ALWAYS shutdown engine before transporting



are rated equal to, or greater than the trailer “gross vehicle weight rating.”

 ALWAYS inspect the hitch and coupling for wear.

 Check the tire air pressure on both towing vehicle and

trailer. Also check the tire tread wear on both vehicles.

 ALWAYS make sure the trailer is equipped with a

chain.

 ALWAYS properly

vehicle.

 ALWAYS

backup, brake and trailer lights are connected and working properly.

 DOT Requirements include the following:

 NEVER lift the equipment while the engine is running.

 Tighten fuel tank cap securely and close fuel cock to

prevent fuel from spilling.

 Use adequate lifting cable (wire or rope) of sufﬁ cient

strength.

 DO NOT lift machine to unnecessary heights.

 ALWAYS tie down equipment during transpor t by

securing the equipment with rope.

PAGE 12 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

• Connect and test electric brake operation.

• Secure portable power cables in cable tray with tie wraps.



exceed 15 MPH or less depending on type of terrain.



or jack-kniﬁ ng. Smooth, gradual starts and stops will improve towing.

 Avoid sharp turns to prevent rolling.

 Trailer should be adjusted to a level position at all times

when towing.

 Raise and lock trailer wheel stand in up position when

towing.

SAFETY INFORMATION

 Place chock blocks underneath wheel to prevent rolling

while parked.

 Place support blocks underneath the trailer’s bumper to

prevent tipping while parked.

 Use the trailer’s swivel jack to adjust the trailer height to

a level position while parked.

ENVIRONMENTAL SAFETY

NOTICE

 Dispose of hazardous waste properly.

Examples of potentially hazardous waste are used motor oil, fuel and fuel ﬁ lters.

 DO NOT use food or plastic containers to dispose of

hazardous waste.

 DO NOT pour waste, oil or fuel directly onto the ground,

down a drain or into any water source.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 13

DIMENSIONS/SPECIFICATIONS

Figure 1. HHX Dimensions

Table 1. HHX Speciﬁcations

SPECIFICATION PARAMETER HHXD5 (VANGUARD)

A–Length – in. (cm) 98.00 (249)

B–Width – in. (cm) 50.0 (127)

C–Height – in. (cm) 54.0 (137.2)

Weight – lbs. (kgs.) Operating 1,440 (658)

Weight – lbs. (kgs.) Shipping 1,515 (692)

Blade Tip Speed – FPM (m/s) 1425 (7.24)

Fuel Tank – gallons (liters) 9 (34)

Rotor – RPM 40 to 170

Path Width – in. (cm) 91 (231)

Hydraulic Oil4 Whiteman P/N 10139 0r ISO 68 AWMV

PAGE 14 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

Table 2. Noise and Vibration Emissions

SPECIFICATIONS

Guaranteed ISO 11201:2010 Based Sound Pressure Level at Operator Station in dB(A)

Guaranteed ISO 3744:2010 Based Sound Power Level in dB(A)

Whole Body Vibration Per ISO 2631-1:1997+A1:2010

in m/s

∑A(8)

120

0.06

NOTES:

1. Sound Pressure and Power Levels are “A” weighted Measures per ISO 226:2003 (ANSI S1.4-1981). They are measured with the operating

condition of the machine which generates the most repeatable but highest values of the sound levels. Under normal circumstances, the sound

level will vary depending on the condition of the material being worked upon.

2. The vibration level indicated is the vector sum of the RMS (Root Mean Square) Values of amplitudes on each axis, standardized to an 8 hour

exposure period, and obtained using operating condition of the machine that generates the most repeatable but highest values in accordance

with the applicable standards for the machine.

3. Per EU Directive 2002/44/EC, the daily exposure action value for whole body vibration is 0.5 m/s

1.15 m/s2 ∑A(8).

Table 3. HHXD5 Engine Speciﬁcations

Model Vanguard DM950DT

Type Diesel, Turbo

∑A(8). The daily exposure limit value is

Cylinders 3

Displacement 58.1 cu.in. (953 cc)

Power (Maximum Output) 31 HP (21.1 kW) @3600 rpm

Bore and Stroke 2.83 in. x 3.07 (72 mm x 78 mm)

Maximum Torque (Intermittent) 72.1 Nm @ 2400 rpm

Compression Ratio 24.8

Cooling System water-cooled

Engine Oil Capacity

Lubricating System Pressure feed with spin-on ﬁlter

Fuel Tank 9 gal. (34 liters)

Fuel Delivery System Direct Injected

Helical Gearbox Gear Compound Capacity

Fuel Diesel - No. 2-D (ASTM D975) Cetane rating 40 or higher

Starting System 12V Electric Starter with Glow Plug

Dry Weight 196 lbs. (89 Kg)

Dimensions (L x W x H)

3.5 qt. (3.3 liters) w/ oil ﬁlter replacement

(452.6 mm x 447.6 mm x 538 mm).

3.2 qt. (3 liters)

144 oz. (4.26 liters)

ISO 22O AGMA GR 5EP

17.8 in. x 17.6 in. x 21.2 in

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 15

GENERAL INFORMATION

HHX RIDE-ON TROWEL FAMILARIZATION

The HHX is designed for the ﬂoating and ﬁnishing of concrete slabs.

Take a walk around your trowel. Take notice of all the major components like the engine, blades, air cleaner, fuel system, fuel shut-off valve, ignition switch etc. Ensure engine and gearbox lubricant levels are within proper operating range and maintain a proper level of hydraulic ﬂuid in the hydraulic ﬂuid reservoir.

Read all the safety instructions carefully. Safety instructions will be found throughout this manual and on the machine. Keep all safety information in good, readable condition. Operators should be well trained on the operation and maintenance of the trowel.

Look at the operator Control Joysticks. Grasp the Control Joysticks and move them around a bit. Observe how moving the Control Joysticks cause the gearboxes and frame to move.

Notice the foot pedal which controls the engine and blade speed. Also take a look at the main driveline of the trowel. Take note and reference how the belts look, this is the way the belts should look when adjusted properly.

BLADES

The blades of the ride-on power trowel ﬁnish the concrete as they are swirled around the surface. Blades are classiﬁed as combination (10 or 8 inches wide), ﬁnish (6 inches wide). The HHX is equipped with ﬁve blades per rotor equally spacedin a radial pattern and attached to a vertical rotating shaft by means of a spider assembly.

GEARBOXES

The HHX consist of two separate gearbox assemblies that are enclosed in rugged cast aluminum gear cases.

The gearbox casing holds 50% more oil capacity than competitors, which allows more lubrication to be provided to critical points.

HYDRAULIC STEERING

Dual palm grip joystick controls located to the left and right of the operator are provided for steering the HHX. The joysticks are linked to three hydraulic steering cylinders located within the frame of the machine. Detailed explanation of how the joystick controls affect the steering of the trowel can be found in the Operation section of this manual.

Before using your trowel, test it on a ﬂat watered down section of ﬁnished concrete. This trial test run will increase your conﬁdence in using the trowel and at the same time it will familiarize you with the trowel’s controls and indicators. In addition you will understand how the trowel will handle under actual conditions.

ENGINE HHXD5

The HHXD5 Ride-On Power Trowel is equipped with a liquid cooled 31 HP Vanguard Diesel engine. Refer to the engine owner’s manual for speciﬁc instructions regarding engine operation. This manual is included with the ride-on trowel at the time of shipping. Please contact your nearest Multiquip Dealer for a replacement should the original manual disappear.

See the steering chart (Table 3) for infomation on the effect the steering joysticks have upon the steering direction of the machine.

CONSTANT VELOCITY JOINTS (CV-JOINTS)

Constant velocity joints insure the efﬁcient transfer of power to the drive shaft and maintains the timing of the gearboxes without any chance of slippage.

TRAINING

Fo r prop er tra ining, ple ase us e the “TR AINI NG CHECKLIST” located in the front of this manual. This

checklist will provide an outline for an experienced operator to provide training to a new operator.

Figure 2, Figure 3 and Figure 4 show the location of the controls, indicators and general maintenance parts. Each control may perform more than one function.

PAGE 16 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

CONTROLS AND INDICATORS

Figure 2. HHXD5 Controls and Indicators (Front)

1. Seat — Place for operator to sit. Engine will not start unless operator is seated. Seat is adjustable, fore and aft for operator comfort.

2. Steering Control Joystick (right side) — Allows the unit to move in either a forward, reverse left or right direction.

3. Front Guard — Remove this Guard Cover to access left side of engine and other internal components.

4. Pitch Control — Adjusts the blade pitch separately for each side of the trowel.

5. Hour Meter — Indicates number of hours machine has been in use or hours engine was run.

6. Steering Control Joystick (left side) — Allows the unit to move in either a forward, reverse left or right direction. See Page 24 for additional Information.

7. Light Switch — When activated, turns on four halogen lights. Lights offer better visibility when working indoors.

8. Ignition Switch — With key inserted turn clockwise to start engine.

9. Lights — 12V Halogen, 4 fore and 2 aft.

10. Right Side Guard — Remove to access Radiator and to allow Right Clamshell to open for Service.

11. Left Side Guard — Remove to access Battery and to allow Left Clamshell to open for Service.

12. Left Side Clamshell — Open to allow access for service and maintenance.

13. Right Side Clamshell — Open to allow access for service and maintenance.

14. By-Pass Indicator — Sight glass located in-line and just above the Hydraulic By-Pass Filter. System in a By-Pass condition when indicator in the red area.

15. Hydraulic By-Pass Filter — Filters contaminants from hydraulic system during a By-Pass condition.

16. Magnetic Drain Plug — Remove to drain hydraulic oil from hydraulic system.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 17

CONTROLS AND INDICATORS

Figure 3. HHXD5 Controls and Indicators (Rear)

17. Rear Guard — Remove to access right side of engine and internal components for service and maintenance.

18. Safety-Stop Switch — Shuts down engine when operator is not sitting in seat .

19. Lift Points — Located on both the left and right sides of the main frame. Used when the trowel must be lifted onto a concrete slab.

20. Right-Side Spider — Consists (basic) of trowel arms, blades, wear plate, and thrust collar etc.

21. Left-Side Spider — Consists (basic) of trowel arms, blades, wear plate, and thrust collar etc.

22. Fuel Filler Cap — Remove this cap to add fuel.

23. Engine Dip Stick — Indicates engine oil level. Add oil as required.

24. Oil Filter — Provides oil ﬁltering for the engine.

25. Oil Indicator Light — Lights red when oil pressure is low.

26. Water Temperature Light — Lights red when water temperature is high.

27. Charge Indicator — Lights red when electrical system is not charging properly.

28. Exhaust Outlet — Exhaust gases routed through mufﬂer and out the back of the rear guard.

29. Air Filter Assembly — Helps prevent dirt and debris from entering the fuel system. Lift Locking Latch on cannister to gain access to ﬁlter element.

30. Document Box — Use to hold and protect Operation Manual.

PAGE 18 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

CONTROLS AND INDICATORS

Figure 4. HHXD5 Controls and Indicators (Clamshell Open)

31. Radiator/Filler Cap — Holds coolant or water nece ss ary to keep engine at a safe operating temperature. Remove this cap to add water or antifreeze.

32. B lad e Spee d Peda l — Sl ow bl ade speed is accomplished by slightly depressing the foot pedal while maximum blade speed is accomplished by fully depressing the pedal.

33. Overﬂow Bottle — Supplies coolant to the radiator when radiator coolant level is low. Fill to indicated level as shown on bottle.

34. Engine Oil Filler Cap — Remove this cap to add engine oil.

35. Clamshell Securing Bolt Location (4 places) — Remove to open clamshell.

38. Battery — Provides +12V DC power to the electrical system

39. Right Side Clamshell — Remove two bolts to open for service and maintenance access.

40. Left Side Clamshell — Remove two bolts to open for service and maintenance access.

41. Retardant Spray Filler Cap — Remove this cap to add spray retardant.

42. Burp Tank — Hydraulic Fluid top-off point.

43. Test Port-Hydraulic Pressure — Hook test guage to test port to determine hydraulic pressure during operation.

44. Retardant Spray Control Button — Located on both joysticks. When pressed, allows retardant spray to ﬂow through the spray nozzle.

36. Clutch and Belt — Drive Pulleys transfer power from the engine to the gearboxes

37. Spare Belt Carrier — Contains a spare drive belt for expedient belt replacement.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 19

The following section is intended as a basic guide to the ride-on trowel operation, and is not to be considered a complete guide to concrete finishing. It is strongly suggested that all operators (experienced and novice) read “Slabs on Grade ” published by the American Concrete Institute, Detroit Michigan.

ENGINE COMPONENTS (DIESEL)

Figure 5. Engine Components (Diesel Engine)

The following refer to the basic engine components for reference (Figure 5). Refer to the manufacturer's engine manual for instructions and details of operation and servicing. The engine shown above is a Briggs & Stratton Vanguard Diesel engine.

1. Fuel Filter — Prevents dirt and other debris from entering the Fuel Injection system.

2. Oil Filter — Prevents dirt and other debris from entering the engine oil.

3. Oil Dip Stick — Remove to check amount and condition of oil in crankcase. Lift Seat to access.

4. Injector Pump — Provides constant pressure for fuel delivery to Injectors.

5. Flywheel — Mates to hydraulic motor.

6. Fuel Injectors — Provides fuel to combustion chambers.

7. Coolant Temperature Sending Unit — Device that measures coolant temperature.

8. Governor Lever — This lever restricts engine speed (high idle or low idle) through a speed control device linked to the accelerator system.

9. Oil Drain — Used to drain crankcase oil. Always dispose of used oil and oil ﬁlters in an environmentally

safe manner. DO NOT allow used oil to drain onto the ground or into a water runoff drain.

10. Air Filter — Prevents dirt and other debris from entering the engine Induction system.

11. Fan — Provides cooling air to the radiator.

12. Coolant Inlet — Circulates coolant ﬂuid via radiator.

13. Oil Filler Cap — Remove to add engine oil.

14. Turbocharger — Provides additional power over naturally aspirated units..

WARNING

Engine components can generate extreme heat. To prevent burns, DO NOT touch these areas while the engine is running or immediately after operating. NEVER operate the engine with the mufﬂer removed.

15. Electric Starter — Starts engine when ignition key is rotated to the "START" position.

16. Alternator — Provides current to the electrical system and charges the battery.

17. Belt Tensioning Bolt — Loosen to tension fan belt.

18. Fan Belt — Replace if frayed or worn.

PAGE 20 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

SETUP

TROWEL SETUP INSTRUCTIONS

The purpose of this section is to assist the user in the setting up of a NEW trowel. If your trowel is already assembled (seats, handles, knobs and battery), then this section can be skipped.

NOTICE

The new ride-on trowel cannot be put into service until the setup installation instructions are completed. These setup instructions only need to be performed at the time of unpacking a NEW trowel.

Before packaging and shipping this Whiteman Ride-On Power Trowel, it was run and tested at the factory. If there are problems with the trowel, please let us know.

NOTICE

HHX trowels have a seat that is mounted on tracks, similar to an automobile seat. This seat can be adjusted fore and aft via the Control Joystick under the front of the seat.

BATTERY SETUP

DANGER

Use all safety precautions speciﬁed by the battery manufacturer when working with the battery.

Flammable, explosive gas. (produces hydrogen gas while charging or during operation). Keep area around battery well ventilated and keep from any ﬁre source.

Battery electrolyte contains corrosive, toxic chemical. (dilute sulfuric acid). Avoid contact with eyes and skin.

Shock or Fire due to electric shor tcircuit. Disconnect battery cables before inspecting electrical system and never "spark" battery terminals to test for charge.

NOTICE

ALWAYS be sure the battery cables are properly connected to the battery terminal. The RED cable is connected to the positive terminal of the battery, and the BLACK cable is connected to the negative terminal of the battery.

This trowel was shipped with a wet charged battery. This battery may need to be charged for a brief period of time as per the manufacturer instructions.

To install the battery on the trowel, make sure that the battery is well seated in the battery box and the terminals are properly connected. The positive cable, normally red, is associated with the "+" symbol on the battery. The negative cable, normally black, is associated with the "-" symbol on the battery, (Figure 6). Connect the positive cable to the positive terminal on the battery ﬁrst, then connect the negative cable to the negative terminal. Close the plastic battery box cover and secure the battery box.

CAUTION

Use all safety precautions speciﬁed by the battery manufacturer when working with the battery. See further speciﬁc safety information on page 11 of this manual.

Figure 6. Battery Cable Orientation

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 21

INSPECTION

PLUG

This section is intended to assist the operator with the initial start-up of the HHX. It is extremely important that this section be read carefully before attempting to use the trowel in the ﬁeld.

DO NOT use your ride-on power trowel until this section is thoroughly understood.

WARNING

Failure to understand the operation of the HHX could result in severe damage to the trowel or personal injury.

See Figure 2, Figure 3 and Figure 4 for the location of any control or indicator referenced in this manual.

ENGINE OIL LEVEL

1. Lift (tilt) seat forward to access dipstick.

2. Pull the engine oil dipstick from its holder.

3. Determine if engine oil is low (Figure 7), add correct amount of engine oil to bring oil level to a normal safe level (See Recommended Viscosity Grades, Table 5)..

box oil capacity is 1 U.S. Gallon, (3.79 liters). If additional oil is required, unscrew the oil ﬁll plug located on top of the gearbox, and reﬁll with ISO 220 A GMA GR 5 EP oil.

FILL PLUG

DRAIN

SIGHT GLASS

(OIL CHECK)

Figure 8. Gearbox Oil Plugs

FUEL

To determine if the engine fuel is low, view the sight gauge on the side of the fuel tank. If fuel level is low, ﬁll with clean Diesel fuel.

WARNING

CAUTION

DO NOT overﬁll engine oil. Oil level should not be above the top ﬁll line.

DIPSTICK

DO NOT

OVERFILL

ADD OIL

Figure 7. Engine Oil Dipstick

SAFE

OPERATING

MAX

LEVEL

MIN

GEARBOX OIL LEVEL

1. Check the gearbox oil level in both gearboxes by viewing the sight glass at the rear of the gearbox. See Figure 8.

Handle fuel safely. Motor fuels are highly ﬂammable and can be dangerous if mishandled. DO NOT smoke while refueling. Do not attempt to refuel the ride-on trowel if the engine is hot or running.

WARNING

Never store the ride-on trowel with fuel in the tank for any extended period of time. Drain fuel into an appropriate recepticle. Drain by opening the fuel petcock at the bottom of the tank. Always clean up spilled fuel immediately.

HYDRAULIC FLUID FILTER

To determine if the hydraulic ﬂuid ﬁlter needs to be changed, view the sight gauge above the hydraulic ﬁlter located beneath the foot platform.. If the gauge reads in the red area, indicating a ﬁter by-pass condition, the ﬁlter needs to be replaced.

2. The oil level of the gear box should be at the half-way point of the sight glass (Figure 8). The gear

PAGE 22 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

OPERATION

STARTING THE ENGINE

1. Place one foot on the trowel's platform, grab ahold

of any part of the frame (NOT THE JOYSTICKS), lift yourself onto the trowel, then sit down in the operator's seat.

NOTICE

The HHX is equipped with a safety stop switch that will not allow the engine to start unless an operator is sitting in the operator’s seat. The weight of an operator depresses an electrical switch, which allows the engine to start.

WARNING

NEVER disable or disconnect the safety stop switch. It is provided for the operator's safety and injury may result if it is disabled, disconnected or improperly maintained.

NOTICE

3. Keep your foot OFF the foot pedal. If the engine is cold, adjust the choke but in all circumstances, start the engine at idle (without touching foot pedal).

4. Insert the ignition key into the ignition switch .

5. Turn the ignition key clockwise to the (start) position. The oil and charge indicator lights, (Figure 10) should be on

NOTICE

OIL, and CHARGE, indicator lights come on when ignition switch is in the ON position, and the engine is NOT running. In COLD weather turn and hold the ignition key counter clockwise to the PREHEAT position, wait until the preheat indicator goes off before turning the ignition key clockwise to the start position. Two or three preheat cycles may be necessary in very cold weather.

The safety stop switch should be used to stop the engine after every use. Doing this will verify the switch is working properly thus providing safety for the operator. Remember to turn the key to the “OFF” position after stopping the machine. Not doing so may drain the battery.

Figure 9. Blade Speed Control Foot Pedal

2. The foot pedal (Figure 9) controls blade and engine speed. The position of the foot pedal determines the blade speed. Slow blade speed is obtained by slightly depressing the pedal. Maximum blade speed is obtained by fully depressing the pedal.

Figure 10. Oil and Charge Indicator Lights

6. Turn ignition key fully clockwise and listen for engine to start. Once engine has started release ignition key.

7. If the engine fails to start in this manner, consult the engine owner's manual supplied with the trowel.

8. Test the safety kill switch by standing up brieﬂy. The switch under the seat should cause the engine to stop. If the kill switch fails to shut down the engine. Turn off the engine with the key switch and ﬁx the safety kill switch. See Troubleshooting Chart for possible problems.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 23

OPERATION

9. Repeat this section a few times to get fully acquainted with the engine starting procedure.

10. Let the engine idle for 3-5 minutes. If choke is applied, push the choke to the open position as soon as the engine will run smoothly.

STEERING

Two joysticks (Figure 11) located to the left and right of the operator’s seat provide directional control for the HHX Ride-On Power Trowel. Table 4 illustrates the various directional positions of the joysticks and their effect on the ride-on trowel.

NOTICE

All directional references with respect to the steering Control Joysticks are from the operator’s seat position.

1. Push both the left and right Control Joysticks forward. See Figure 11.

FORWARD

LEFT JOYSTICK

CONTROL

REVERSE

LEFT

FORWARD

RIGHT

RIGHT JOYSTICK

CONTROL

4. Practice maneuvering the ride-on trowel using the information listed in Table 4. Try to practice controlled motions as if you were ﬁnishing a slab of concrete. Practice edging and covering a large area.

5. Try adjusting the pitch of the blades. This can be done with the ride-on trowel stopped or while the trowel is moving, whatever feels comfortable. Test the operation of optional equipment like retardant spray and lights if equipped.

6. Push both the left and right joysticks backward and repeat steps 3 through 6 while substituting the word reverse for forward.

Table 4. Control Joystick Directional Positioning

CONTROL JOYSTICK

& DIRECTION

Move

LEFT Joystick

FORWARD

Move Joystick

LEFT

BACKWARD

Move Joystick

RIGHT

FORWARD

Move Joystick

RIGHT

BACWARD

Move Joysticks

BOTH

FORWARD

Causes only the right side of the ride-on trowel to move forward.

Causes only the right side of the ride-on trowel to move backward.

Causes the ride-on trowel

RESULT

Causes only the left side of the ride-on trowel to move forward.

Causes only the left side of the ride-on trowel to move backward.

to move forward in

a straight line.

Figure 11. Left and Right Control Joysticks

2. With your right foot quickly depress the right foot pedal halfway. Notice that the ride-on power trowel begins to move in a forward direction. Return both joystick controls to their neutral position to stop forward movement, then remove your right foot from the right foot pedal.

3. Practice holding the machine in one place as you increase blade speed. When about 75% of maximum blade speed has been reached, the blade will be moving at proper ﬁnishing speed. The machine may be difﬁcult to keep in one place. Trying to keep the ride-on trowel stationary is a good practice for operation.

PAGE 24 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

Move Joysticks

BOTH

BACKWARD

Move Joysticks

BOTH

to the RIGHT

Move Joysticks

BOTH

to the LEFT

Causes the ride-on trowel

to move backard in

a straight line.

Causes the ride-on trowel

to move to the right.

Causes the ride-on trowel

to move to the left.

Blade Pitch

Sometimes it may be necessary to match blade pitch between the two sets of blades. There are some signs that this may be necessary. For example, the differences in pitch could cause a noticeable difference in ﬁnish quality between the two sets of blades. Or, the difference in blade pitch could make the machine difﬁcult to control. This is due to the surface area in contact with the concrete (the blade set with the greater contact area tends to stick to the concrete more).

Matching Blade Pitch for Both Sets of Blades

Trowels equipped with Twin Pitch have blade pitch between t he two sets o f blade s "syncronized". If the blades need to be syncronized this is easily accomplished by performing the following. Refer to Figure 12.

CAUTION

Controls may need to

OPERATION

OPERATING POSITION DISENGAGED (ONE SIDE)

When turning an adjustment handle, do not force it to turn or damage to the cable may occur. If the cable starts to noticeably twist this is a good indication that one side is either all ready at full pitch or it is bound up due to concrete, debris, or corrosion.

1. Lift the pitch adjustment handle on either side. Once lifted, that side is now disconnected from the Twin PitchTM system.

2. Adjust to match the opposite side.

3. When adjusted, lower the handle to Twin Pitch

operating position.

Figure 12. Pitch Tower

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 25

MAINTENANCE

When performing any maintenance on the trowel or engine, follow all safety messages and rules for safe operation stated at the beginning of this manual. See the engine manual supplied with your machine for appropriate engine maintenance schedule and troubleshooting guide for problems.

At the front of the book there is a “Daily Pre-Operation Checklist”. Make copies of this checklist and use it on a daily basis.

WARNING

Accidental starts can cause severe injury or death.

ALWAYS place the ON/OFF switch in the OFF position.

4. Replace engine oil and filter as necessary. (See following section on Oil and Filter

5. Check and retighten all fasteners as necessary.

Monthly (100-150 Hours)

1. Remove, clean, reinstall and relube the arms and thrust collar. Adjust the blade arms.

2. Replace gearbox lubricant after the ﬁrst 100 hours of operation. Replace every 500-600 hours.

3. Check drive belt for excessive wear.

4. Replace engine oil and ﬁlter as necessary, see engine manual.

Yearly (500-600 Hours)

1. Check the arm bushings, thrust collar bushings, shaft seals and belts. Replace if necessary

2. Check pitch control cables for wear.

3. Replace gearbox lubricant.

Disconnect and ground spark plug leads and disconnect negative battery cable from battery before servicing.

MAINTENANCE SCHEDULE

Daily (8-10 Hours)

1. Thoroughly remove dirt and oil from the engine and control area. Check for oil or coolant leaks.

2. Check the ﬂuid levels in the engine and gearboxes, ﬁll as necessary. Check air ﬁlter. See section on air ﬁlter servicing.

Weekly (30-40 Hours)

1. Relube arms, thrust collar and steering links.

2. Replace blades if necessary.

3. Check and clean or replace the engine air filter as necessary. (See following section on Air Filter Maintenance.)

4. Check and adjust blade speed.

5. Change fuel ﬁlter element..

Table 5. Oil Chart

WARNING

Cer ta i n ma inte n ance ope rati o ns or ma c hine adjustments require specialized knowledge and skill. Attempting to perform maintenance operations or adjustments without the proper knowledge, skills or training could result in equipment damage or injury to personnel. If in doubt, consult your dealer.

PAGE 26 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

MAINTENANCE

Air Cleaner (Daily)

The Briggs and Stratton Vanguard engine is equipped with a replaceable, high-density paper air cleaner element. Check the air cleaner daily or before starting the engine. Check for and correct heavy buildup of dirt and debris along with loose or damaged components, (Figure 13).

AIR CLEANER BODY

CARTRIDGE

COVER

LATCHES (COVER CLAMPS)

Figure 13. Air Cleaner

Use high quality detergent oil classiﬁed "For Service CF, or CF-4". Fill to the upper limit of dipstick. Do not over-ﬁll.

3. Crankcase oil capacity with oil ﬁlter replacement is 3.5 qts. (3.3 liters).

Oil Filter (300 Hours)

1. Replace the engine oil ﬁlter (Figure 14) every other oil change or 300 hours. Refer to your engine manual for speciﬁc details to perform this operation.

Oil Filler Cap

Dipstick Handle

Seal Oil Filter

1. Unlock the cover clamps (4) and remove cover (3).

2. Remove cartridge (2) from air cleaner body (1).

3. Clean cartridge by gently tapping the end with the handle of a screwdriver. Replace cartridge if very dirty or damaged.

4. Carefully clean out the air cleaner cover.

5. Install cartridge in body.

6. Install cover and lock cover clamps.

NOTICE

Operating the engine with loose or damaged air cleaner components could allow unﬁltered air into the engine causing premature wear and failure.

Changing Engine Oil And Filter

1. Change the engine oil and ﬁlter after the ﬁrst 5 hours of use, then change oil every 6 months or 150 hours.

Drain Plugs

Figure 14. Oil FIlter Replacement

2. Be sure to coat the seal (Figure 14) of the new oil ﬁlter with clean engine oil.

Fuel Filter

 Replace the engine fuel ﬁlter (Figure 15) every 800

hours. Refer to your engine manual for speciﬁc details to perform this operation.

2. Remove the oil ﬁller cap and ﬁll engine crankcase with recommended viscosity grade oil as listed in Table 5.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 27

Figure 15. Fuel Filter

MAINTENANCE

Oil/Water Separator

Drain water from the bottom of the fuel ﬁlter by loosening the drain plug and allowing the water to drain out. Refer to your engine manual for speciﬁc details to perform this operation.

Oil And Fuel Lines

1. Check the oil and fuel lines and connections regularly for leaks or damage. Repair or replace as necessary.

2. Replace the oil and fuel lines every two years to maintain the line's performance and ﬂexibility.

Radiator/Cooling System

WARNING

Hot coolant can cause severe burns. DO NOT remove cap if radiator is HOT.

1. Check and clean radiator ﬁns.

1. Check and clean battery terminals for corrosion.

2. Check and keep battery electrolyte between upper and lower limits indicated on the battery. Never operate or recharge without sufﬁcient ﬂuid in the battery.

3. Never attempt to charge a battery that is frozen. The battery can explode unless ﬁrst allowed to thaw.

4. Disconnect the negative terminal ( - ) of the battery during storage. If unit will be stored where ambient temperature will drop to -15oC or less, remove and store battery in a warm, dry place.

Long Term Storage

 Remove the battery.

 Drain fuel from fuel tank.

 Clean exterior with a cloth soaked in clean oil.

 Store unit covered with plastic sheet in moisture and

dust-free location out of direct sunlight.

2. Check cooling water.

3. Check radiator hoses for fatigue or cracking.

4. Check radiator cap seal.

Battery/Charging System

DANGER

Use all safety precautions speciﬁed by the battery manufacturer when working with the battery.

Flammable, explosive gas. (produces hydrogen gas while charging or during operation). Keep area around battery well ventilated and keep from any ﬁre source.

Battery electrolyte contains corrosive, toxic chemical. (dilute sulfuric acid). Avoid contact with eyes and skin.

Shock or Fire due to electric shor tcircuit. Disconnect battery cables before inspecting electrical system and never "spa rk" bat te ry terminals to test for charge.

CAUTION

Never store the ride-on trowel with fuel in the tank for any extended period of time. Always clean up spilled fuel immediately.

Engine Tune-Up

See your engine manual for speciﬁc information on tuning up your engine.

NOTICE

See the engine manual supplied with your machine for appropriate engine maintenance schedule and troubleshooting guide for problems.

CAUTION

ALWAYS disconnect battery cables before attempting any service or maintenance on the ride-on trowel.

PAGE 28 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

MAINTENANCE (OLD STYLE CLUTCH)

NOTICE

This section is intended to aid users in the maintenance of drive assemblies with an old style Comet clutch.

Checking The Drive Belt

The drive belt needs to be changed as soon as it begins to show signs of wear. DO NOT reuse a belt under any circumstances. Indications of excessive belt wear are fraying, squealing when in use, belts that emit smoke or a burning rubber smell when in use.

Under normal operating conditions, a drive belt may last approximately 150 hours. If your trowel is not reaching this kind of life span for drive belt wear, check the drive belt for proper pulley alignment and spacing .

To gain access to the drive belt, remove left-side end-grate and open left "Clamshell", then visually inspect the drive belt for signs of damage or excessive wear. If the drive belt is worn or damaged, replace the drive belt

 A 3/4 X 1 X 3-1/4 inch wooden block may assist in

helping to hold the lower pulley apart during removal and replacement of belt).

Figure 16. Upper Clutch (Drive Pulley)

Removal Tool

Upper (Drive) Pulley

Spare Drive Belt Holder

WARNING

DO NOT attempt to insert hands or tools into the belt area while the engine is running and the safety guard has been removed. Keep ﬁngers, hands, hair and clothing away from all moving parts to prevent bodily injury.

WARNING

Allow the entire trowel to cool down before performing this procedure.

Removing the Drive Belt

 Leave the existing drive belt intact until instructed to cut it.

 Leave the engine in place for this procedure. It is not

necessary to slide the engine to replace the drive belt.

Spare Drive Belt

Lower (Driven) Pulley

Figure 17. Drive Belt, Belt Holder and Pulleys

1. Remove Left-side End Grate and open Left "Clamshell"

(see Figure 4) to gain access to Drive Belt, Spare Drive Belt, and Pulleys (Figure 17)Squeeze the drive belt as shown in Figure 18, and pull the V-belt upwards. This will spread open the faces of the lower drive pulley.

 Locate the Clutch Removal Tool provided with the trowel,

p/n 23294 located within the documentation box. (Figure 16)

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 29

MAINTENANCE (OLD STYLE CLUTCH)

Drive Belt

Upper Pulley

Drive Belt

Lower Pulley Fixed Face

Lower Pulley Moveable Face

Figure 18. Expanding Lower Drive Pulley

2. A wooden block inserted between the moveable face and the ﬁxed face of the lower drive pulley may help keep the lower drive pulley faces open while installing the new drive belt. See Figure 19.

Lower Pulley Spread Apart

1. If necessary, refer to Removing Drive Belt Instructions. Ensure all remnants of old belt have been removed from pulleys.

2. Remove the 2 bolts that secure the drive belt carrier. (Figure 20) This will allow free movement of the belt for installation. Take care with to not contaminate the relplacement belt with grease or dirt.

3. Remove the 5/8 Bolt from the Upper Drive Pulley. You will need to hold the ﬂywheel in place by using a large ﬂat blade screwdriver or suitable pry bar.

4. Again hold the ﬂywheel in place as above and thread the Special Upper Drive Pulley Removal Tool (Figure

16), into the Upper Drive Pulley. Tighten until the taperlock breaks free. Slide the pulley off the shaft.

5. Place the replacement belt into the lower pulley ﬁrst. (A wood block may help holding the lower pulley open).

6. Place the other end of the belt over the upper drive pulley into the pulley groove and slide the pulley back onto the tapered shaft.

Insert

Wood Block

Figure 19. Holding Lower Pulley Open

3. If the belt is not being reused (recommended), CUT the drive belt. Ensure all belt remnants are removed from the pulleys.

Installing the Drive Belt (Using New Drive Belt)

The HHX is equipped with a replacement drive belt (spare) carrier, which is mounted on the inboard side of the platform between the battery and the clutch. Make sure that there is ALWAYS a spare drive belt in the drive belt carrier before the trowel is placed on a slab to ﬁnish concrete.

In the event of a drive belt failure, the spare (replacement) drive belt can be used for quick replacement at the job site to continue trowel operation.

7. Use threadlock, (Loctite Blue 246) on 5/8" retaining bolt, thread into pulley and tighten.

8. Reinstall the spare belt carrier and the drive belt guard.

9. Replace the spare belt before the next trowel use. See spare drive belt replacement procedures.

Wooden Block

Spare Drive Belt Carrier

CV Joint

New Spare

Lower

(Driven) Pulley

Figure 20. Drive Belt Install

PAGE 30 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

MAINTENANCE (OLD STYLE CLUTCH)

Spare Drive Belt Replacement

To replace a spare drive belt, be prepared to disconnect the CV-joint from the left-side gearbox. See Figure 21.

NOTICE

It will be necessary to disconnect the CV-Joint from the left-side gearbox coupler. This means the removal of the three screws that secure the CV-Joint to the gearbox.

1. Place the trowel on suitable supports and observe all safety precautions.

2. Remove Left-side End Grate and open Left "Clamshell"

3. Remove the three screws that secure the CV-joint to the left-side gearbox coupler.

4. Once the CV-joint has been separated from the left-side gearbox, push the CV-joint inward so that a gap exists between the gearbox and the CV-joint (Figure 21). Slide the spare V-belt between the gearbox coupler and the CV-joint. Avoid contaminating the replacement belt with grease or oil when sliding it between the CV-Joint and gearbox coupler.

5. Place the spare drive belt inside the drive belt carrier, and secure the spare belt carrier to the inboard side of the left gearbox.

6. Install the three screws that secure the CV-joint to the left-side gearbox coupler.

Left Side

Gearbox

The HHX is equipped with a "CVT" type clutch which supplies torque to both the left and right gear boxes.

The func tio n of the CV T, (C ont inu ous ly Variable Transmission), is to automatically deliver the correct amount of torque required by the trowel under all load conditions. This enables the trowel to deliver the necessary torque for ﬂoat pan applications and the high rotor speeds required for burnishing concrete.

The Driven Pulley is a variable pitch pulley type, (Figure

22) connected by a drive belt.

CVT

(Drive

Pulley)

Drive V-Belt

Driven Pulley

Figure 22. CVT with Variable Pitch Drive

PulleyDrive Pulley

The Drive Pulley uses centrifugal force (Figure 23 and Figure 24) to create a belt squeeze force transmitted at the pulley faces. This condition functions as an automatic clutch.

FIXED

FACE

CV Joint Bolt

New Spare Drive Belt

Figure 21. Spare Drive Belt Replacement

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 31

VARIABLE

FACE

FORCE

BELT SQUEEZE

Figure 23. Drive Pulley (Centrifugal Force)

DRIVE PULLEY

(CVT)

Centrifugal force pushes the roller arms (see Figure 24) against the ramp plate, forcing moveable face toward ﬁxed face squeezing belt.

MAINTENANCE (OLD STYLE CLUTCH)

ENSION

MOVEABLE FACE IS CONTROLLED

CENTRIFUGAL FORCE

DISTANCE

MOVEABLE

FACE

TRAVELS

LOW ENGINE RPM

MOVABLE FACE IS

CONTROLLED BY

ROLLER WEIGHT ARMS

AND SPRINGS

DRIVE

PULLEY

HIGH ENGINE RPM

LOW OUTPUT

DRIVEN PULLEY

DRIVE

PULLEY

BY A SPRING

AND BELT T

SPEED

HIGH OUTPUT

SPEED

DRIVEN PULLEY

Figure 24. Pulley Interaction

The "Variable Pitch Pulleys" have one ﬁxed face, and one moveable face. The drive pulley moveable face is controlled by roller weight arms and springs, which change position according to engine speed. The driven pulley moveable face is controlled by a spring and belt tension. (Figure 25)

DRIVE PULLEY

How It Works (Figure 26)

 Condition A:

• Engine Idling

• Drive Pulley: Small

• Driven Pulley: Large

• Belt: Loose and Stationary

 Condition B:

• Engine Accelerating

• Drive Pulley: Small But Increasing

• Driven Pulley: Large But Decreasing

• Belt: Approaching Tightness

 Condition C:

• Engine At High Speed

• Drive Pulley: Large

• Driven Pulley: Small

• Belt: Tight

A B

BUSHING

SPRING

ROLLER ARM

WEIGHT

Figure 25. Variable Pitch Pulley

RAMP PLATE

Figure 26. Pulley Conditions

PAGE 32 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

MAINTENANCE (OLD STYLE CLUTCH)

Clutch

This clutch system provides a high pulley ratio (a low gearso to speak) to start out and a low pulley ratio ( a high gear- so to speak) for a high speed operation, with inﬁnite variation between the two.

This means that it will not be necessary to give full throttle in order to "break the blades/pans loose". The machine can slowly be brought up to speed.

The torque sensitive pulley (Figure 27) utilizes a spring and cam bracket. Peak performance results from proper interaction between the driven pulley spring and the ramp angle of the cam bracket.

SPRING

DRIVEN PULLEY

CAM

BRACKET

MOVEABLE

FACE

Figure 27. Pulley Spring and Cam Bracket

FIXED FACE

NOTICE

If replacement of the clutch is required, use clutch replacement kit, P/N 23447, to upgrade to Multi-Clutch system. New style drive assembly must be installed per instruction sheet, P/N 23448, included with clutch replacement kit.

Old style Comet clutch is no longer available. Multi-Clutch components are not interchangeable with the prior Hoffco Comet drive system. The Hoffco Comet CVT system must be replaced for combatibility with the new equipment.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 33

MAINTENANCE (NEW STYLE CLUTCH)

Upper (Drive) Pulley

NOTICE

This section is intended to aid users in the maintenance of drive assemblies with a new style Multi-Clutch.

CHECKING THE DRIVE BELT

To gain access to the drive belt, remove the drive belt guard cover, then visually inspect the drive belt for signs of damage or excessive wear. If the drive belt is worn or damaged, replace the drive belt.

WARNING

DO NOT attempt to insert hands or tools into

the belt area while the engine is running and the safety guard has been removed. Keep ﬁngers, hands, hair and clothing away from all moving parts to prevent bodily injury.

The clutch will not shift correctly if the belt width is below

1.14". Measure the CVT belt every 100 hours of use to make sure it is within the speciﬁed tolerance. See Figure 28.

CVT BELT

CALIPERS

Figure 28. Belt Measurement

REMOVING THE DRIVE BELT

1. Remove Left-side End Grate and open Left "Clamshell" (see Figure 4) to gain access to Drive Belt and Pulleys (Figure 29)..

WARNING

DO NOT remove the V-belt guard cover

until the mufﬂer has cooled. Allow the entire trowel to cool down before performing this procedure.

BELT MEASUREMENT

Long life can be expected with this new drive assembly as long as the belt is kept properly aligned.

Lower (Driven) Pulley

Figure 29. Drive Belt, Belt Holder and Pulleys

PAGE 34 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

MAINTENANCE (NEW STYLE CLUTCH)

2. Disconnect the left-side CV Axle from the left-side gearbox and the lower drive pulley coupler. See Figure 30.

UPPER DRIVE

PULLEY/CLUTCH

LOWER

DRIVE

PULLEY

CVT

BELT

COUPLER

Figure 30. Remove Left-Side CV Axle

CV AXLE

GEARBOX

COUPLER

LEFT-SIDE

GEARBOX

CLUTCH

UPPER

PULLEY

LOWER PULLEY

Figure 32. Upper Pulley Belt Installation

3. Reconnect left-side CV Axle Assembly. to the left side gearbox and lower drive pulley coupler. See Figure 30.

3. If the belt is not being reused (recommended), CUT the drive belt. Ensure all belt remnants are removed from the pulleys.

INSTALLING DRIVE BELT

1. Place new CVT belt over the lower pulley. Squeeze the belt (Figure 31) and pull the belt upwards and towards the rear of the trowel. This will spread open the faces of the lower drive pulley.

CVT BELT

(P/N 23365)

PULL UPWARDS

AND TOWARDS

REAR OF TROWEL

FIXED FACE

VEABLE

FACE

Figure 31. Holding Lower Pulley Open

LOWER

PULLEY

2. Place free end of CVT belt into upper pulley grooves See Figure 32.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 35

MAINTENANCE (NEW STYLE CLUTCH)

HOW IT WORKS

The Multi-Clutch functions much like a standard CVT system. As the engine RPM’s increase, the drive or primary clutch closes, forcing the belt to ride outwards on the drive sheaves. The closing of the drive clutch also forces the belt to open the driven or secondary sheaves. The opening and closing of these sheaves creates a ratio variation… hence CVT or Continuously Variable Transmission.

Belt protection is achieved within the Multi-Clutch through the use of a series of centrifugal clutches. While most CVT systems have a loose or slack belt while the engine idles, the sheaves of those systems are constantly rotating and wearing on the belt.

Those systems also require the stationar y belt to be pinched by the constantly rotating sheaves during startup. The relative rotation of the sheaves to the belt causes unnecessary wear on the belt. With traditional CVT systems, wear on the belt happens any time the engine is idling and at every start up of the driven equipment. This is where the Multi-Clutch differs from the other CVT’s.

The Multi-Clutch utilizes two centrifugal clutches (the starter clutch system) to drive the sheaves of the drive (primary) clutch. What that means is that the belt can remain tight in the sheaves, and that both the sheaves and the belt are stationary while the vehicle is idling. This eliminates the belt wear at an idle, and during start up, while also providing one additional form of belt protection.

The centrifugal clutches (starter clutch) can act as overload protection as well. In cases where too much torque is trying to be transmitted to the belt, the centrifugals can slip before the maximum load on the belt is achieved. What this means is that instead of the belt slipping on the sheaves during an overload, the centrifugals will ﬁrst slip further protecting the belt from damage.

PAGE 36 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

MAINTENANCE

Blade Pitch

Matching Blade Pitch for Both Sets of Blades

Sometimes it may be necessary to match blade pitch between the two sets of blades. There are some signs that this may be necessary. For example, the differences in pitch could cause a noticeable difference in ﬁnish quality between the two sets of blades, or, the difference in blade pitch could make the machine difﬁcult to control. This is due to the surface area in contact with the concrete (the blade set with the greater contact area tends to stick to the concrete more).

Single Pitch

On a Single Pitch trowel each spider assembly can be pitched individually, forcing the operator to constantly make adjustments on each pitch tower.

CAUTION

OPERATING POSITION DISENGAGED (ONE SIDE)

Figure 33. Pitch Towers

Blade Pitch Adjustment Procedure

Twin Pitch

Trowels equipped with Twin PitchTM Controls may need to have blade pitch between the two sets of blades "syncronized". If the blades need to be syncronized this is easily accomplished by performing the following. Refer to Figure 33.

1. Lift the pitch adjustment handle on either side. Once lifted, that side is now disconnected from the Twin Pitch system.

2. Adjust to match the opposite side.

3. When adjusted, lower the handle to Twin Pitch operating position.

Maintenance adjustment of blade pitch is made by adjusting a bolt (Figure 34) on the arm of the trowel blade ﬁnger. This bolt is the contact point of the trowel arm to the lower wear plate on the thrust collar. The goal of adjustment is to promote consistent blade pitch and ﬁnishing quality.

Look for the following indications if blades are wearing unevenly. If so, adjustment may be necessary.

 Is one blade is completely worn out while the others

look new?

 Does the machine have a perceptible rolling or bouncing

motion when in use?

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 37

MAINTENANCE

Arm

 Look at the machine while it is running, do the guard

rings “rock up and down” relative to the ground?

 Do the pitch control towers rock back and forth?

Spider Plate

Trowel Lever

(Finger)

Trowel

Blade Pitch

Adjustment Bolt

Figure 34. Blade Pitch Adjustment Bolt

The easiest and most consistent way to make adjustments on the trowel arm ﬁngers is to use the Trowel Arm Adjustment Fixture (P/N 9177). It comes with all the hardware necessary to properly accomplish this maintenance and instructions on how to utilize this tool.

If a trowel arm adjustment ﬁxture is not available and immediate adjustment is necessary, temporary field adjustment can be made if you can see or feel which blade is pulling harder by adjusting the bolt that corresponds to that blade.

high. Conversely, adjusting bolts that are too low will not allow the blades to be pitched high enough for ﬁnishing operations.

If, after making Blade Pitch adjustments the machine is still ﬁnishing poorly, blades, trowel arms, and trowel arm bushings may be suspect and should be looked at for adjustment, wear, or damage. See the following sections.

Changing Blades

It is recommended that ALL the blades on the entire machine are changed at the same time. If only one or some of the blades are changed, the machine will not ﬁnish concrete consistently and the machine may wobble or bounce.

1. Place the machine on a ﬂat, level surface. Adjust the blade pitch control to make the blades as ﬂat as possible. Note the blade orientation on the trowel arm. This is important for ride-on trowels as the two sets of blades counter-rotate. Lift the machine up, placing blocks under the main guard ring to support it.

2. Remove the bolts and lock washers on the trowel arm, and then remove the blade.

3. Scrape all concrete and debris from the trowel arm. This is important to properly seat the new blade.

4. Install the new blade, maintaining the proper orientation for direction of rotation.

5. Reinstall the bolts and lock washers.

6. Repeat steps 2-5 for all remaining blades.

Steering Adjustment

A better way to determine which blades need adjustment is to place the machine on a known FLAT surface (steel metal plate) and pitch the blades as ﬂat as possible. Look at the adjustment bolts. They should all barely make contact with the lower wear plate on the spider. If you can see that one of them is not making contact, some adjustment will be necessary.

Adjust the “high” bolts down to the level of the one that is not touching, or adjust the “low” bolt up to the level of the higher ones. If possible, adjust the low bolt up to the level of the rest of the bolts. This is the fastest way, but may not always work. Verify after adjustment the blades pitch correctly.

Blades that are incorrectly adjusted often will not be able to pitch ﬂat. This can occur if the adjusting bolts are raised too

PAGE 38 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

The steering assist adjustment should be performed only by qualified service technicians. For HHXD5 steering adjustment instructions, reference MQ Whiteman service bulletin 200925.

Clean-Up

Never allow concrete to harden on the power trowel. Immediately after use wash any concrete off the trowel with water, be careful not to spray a hot engine or mufﬂer. An old paint brush or broom may help loosen any concrete that has started to harden.

MAINTENANCE

Bearing

TROWEL ARM ADJUSTMENT

Use the following procedure to check and adjust trowel arms, and check for worn or damaged components when it becomes apparent that the trowel is ﬁnishing poorly or in need of routine maintenance.

Look for the following indications. Trowel arm alignment, worn spider bushings or bent trowel arms may the cause.

 Are blades wearing unevenly? Is one blade completely

worn out while the others look new?

 Does the machine have a perceptible rolling or bouncing

motion when in use?

 Look at the machine while it is running; do the guard

rings “rock up and down” relative to the ground?

1. Place the trowel in a FLAT, LEVEL area.

A level, clean area to test the trowel prior to and after is essential. Any unlevel spots in the ﬂoor or debris under the trowel blades will give an incorrect perception of adjustment. Ideally, a 5 x 5 Ft. (1.5 x 1.5 Meter) three-quarter inch (19 mm) thick FLAT steel plate should be used for testing.

2. Pitch the blades as ﬂat as possible. The adjustment bolts should all barely make contact with the lower wear plate on the spider. If one is not making contact, adjustment will be necessary. (Figure 35).

Figure 36 illustrates the "correct alignment " for a spider plate (as shipped from the factory).

Trowel Arm

Surface

Correct Alignment

Figure 36. Correct Spider Plate Alignment

Gearbox

Mounting Bar

Blade

Spider Removal

Remove the spider assembly from the gearbox shaft as follows:

1. Locate the cone point square head set screw (Figure

37) and attached jam nut found on the side of the spider

assembly.

Gearbox

Figure 35 illustrates, "incorrect alignment", worn spider bushings or bent trowel arms. Check that the adjustment bolt is barely touching (0.10" max. clearance) lower wear plate. All alignment bolts should be spaced the same

distance from the lower wear plate.

Adjustment Bolt

Surface

Dished Effect on

Finished Concrete

Figure 35. Incorrect Spider Plate Alignment

Lower Wear Plate

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 39

Gearbox Shaft

Upper Wear Plate

Thrust Collar

Thrust Collar Bushing

Lower Wear Plate

Jam Nut

Spider Plate

Set Screw (Cone Point,

Figure 37. Spider/Gearbox Removal

Square Head)

2. Loosen the jam nut and cone point square head set screw.

MAINTENANCE

3. Carefully lift the upper trowel assembly off of the spider assembly. A slight tap with a rubber mallet may be necessary to dislodge the spider from the main shaft of the gearbox.

Trowel Blade Removal

Remove the trowel blades by removing the three hex head bolts (Figure 38) from the trowel arm. Set blades aside.

Trowel Arm

Hex Head Bolt

Lock Washer

Trowel Blade

Figure 38. Trowel Blades

Trowel Arm Removal

1. Remove the hardware securing the stabilizer ring to the trowel arm (Figure 39).

2. Each trowel arm is held in place at the spider plate by a hex head bolt (zerk grease ﬁtting) and a roll pin. Remove both the hex head bolt and the roll pin (Figure

40) from the spider plate.

Spider Plate

Roll

Hex Head Bolt (Zerk Fitting)

Figure 40. Removing Roll Pin and Grease Zerk

Fitting

4. Should the trowel arm inserts (bronze bushing) come out with the trowel arm, remove the bushing from the trowel arm and set aside in a safe place. If the bushing is retained inside the spider plate, carefully remove the bushing.

5. Examine the bronze trowel arm bushing (Figure 41), and clean if necessary. Replace bushing if out-ofround or worn.

3. Remove the trowel arm from the spider plate.

Figure 39. Stabilizer Ring

PAGE 40 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

Bronze Bushing

Spider Plate

Figure 41. Bronze Bushings

6. Wire brush any build-up of concrete from all six sides of the trowel arm. Repeat this for the remaining arms.

MAINTENANCE

D-Shaft Section

Checking Trowel Arm Straightness

Trowel arms can be damaged by rough handling, (such as dropping the trowel on the pad), or by striking exposed plumbing, forms, or rebar while in operation. A bent trowel arm will not allow the trowel to operate in a smooth ﬂuid rotation. If bent trowel arms are suspect, check for ﬂatness as follows, refer to Figure 42 and Figure 43:

Lever Mounting Slot

(Left Arm Shown)

Roll Pin Hole

Blade Attachment Bolt Hole (1 of 3)

Flat of D-Shaft (Top of Arm)

Trowel Arm

Round Shaft Section

Trowel Arm

3. Next, check the clearance between the round shaft and

the test surface as one of the ﬂat hex sections of the arm rests on the test surface. Rotate the arm to each of the ﬂat hex sections and check the clearance of the round shaft. Use a feeler gauge of .005" (0.127 mm). Each section should have the same clearance between the round of the trowel arm shaft and the test surface.

4. If the trowel arm is found to be uneven or bent, replace

the trowel arm.

Trowel Arm Adjustment

Shown in Figure 44 is the adjustment ﬁxture with a trowel arm inserted. As each trowel arm is locked into the ﬁxture, the arm bolt is adjusted to where it contacts a stop on the ﬁxture. This will consistently adjust all of the trowel arms, keeping the ﬁnisher as ﬂat and evenly pitched as possible.

1. Locate the trowel arm adjustment tool P/N 9177.

ADJUSTMENT

BOLT

Figure 42. Trowel Arm

1. Use a thick steel plate, granite slab or any surface which is true and ﬂat, to check all six sides of each trowel arm for ﬂatness.

2. Check each of the six sides of the trowel arm (hex section). A feeler gauge of .004" (0.10 mm) should not pass between the ﬂat of the trowel arm and the test surface along its length on the test surface. (Figure 43) .

Trowel Arm

Flat Test

Surface

Feeler Gauge

(.005 in./0.127mm)

LOCKING

NUT

DISTANCE

FIXTURE

ARM

SIDE-VIEW

Figure 44. Trowel Arm Adjustment Tool Side View

2. Ensure the ﬁxture arm is in the proper setting (up or down) for your trowel arm rotation as shown in Figure 45.

Feeler Gauge

(.004 in./0.10mm)

Figure 43. Checking Trowel Arm Flatness

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 41

Figure 45. Trowel Arm Adjustment Setup

MAINTENANCE

NOTICE

Arms with CLOCK-WISE blade rotation use the ﬁxture arm in the UP position (A in Figure 45). Arms with COUNTER CLOCK-WISE blade rotation use the ﬁxture with the ﬁxture arm in the DOWN position. (B in Figure 45).

3. Unscrew the locking bolts on the adjustment tool and place the trowel arm into the ﬁxture channel as shown in Figure 46. A thin shim may be required to cover the blade holes on the trowel arm. Make sure to align the trowel adjustment bolt with the ﬁxture adjustment bolt.

TROWEL

ARM

SHIM

LOCKING

BOLTS

TROWEL ARM

ADJUSTMENT

FIXTURE P/N 1817

Figure 46. Trowel Arm Adjustment Fixture

ARM

LEVER

Components

FIXTURE

ARM

ADJ.

BOLT

ADJ.

BOLT

DISTANCE

.010 INCH

4. Use an allen wrench to tighten the locking bolts securing the trowel arm in place.

5. Adjust the bolt "distance" shown in Figure 44 to match one of the arms. The other arms will be adjusted to match this distance.

6. Loosen the locking nut on the trowel arm lever, then turn the trowel arm adjusting bolt until it barely touches (.010") the ﬁxture adjusting bolt.

Re-Assembly

1. Clean and examine the upper/lower wear plates and thrust collar. Examine the entire spider assembly. Wire brush any concrete or rust build-up. If any of the spider components are found to be damaged or out of round, replace them.

2. Make sure that the bronze trowel arm bushing is not damage or out of round. Clean the bushing if necessary. If the bronze bushing is damaged or worn, replace it.

3. Reinstall bronze bushing onto trowel arm.

4. Repeat steps 2-3 for each trowel arm.

5. Make sure that the spring tensioner is in the correct position to exert tension on the trowel arm.

6. Insert all trowel arms with levers into spider plate (with bronze bushing already installed) using care to align grease hole on bronze bushing with grease hole ﬁtting on spider plate.

7. Lock trowel arms in place by tightening the hex head bolt with zerk grease ﬁtting and jam nut.

8. Re-install the blades onto the trowel arms.

9. Install stabilizer ring onto spider assembly.

10. Lubricate all grease points (zerk ﬁttings) with premium "Lithum 12" based grease, conforming to NLG1 Grade #2 consistency.

Installing Pans Onto Finisher Blades

These round discs sometimes referred to as "pans" attach to the spiders arms and allow early ﬂoating on wet concrete and easy movement from wet to dry areas. They are also very effective in embedding large aggregates and surface hardeners.

WARNING

Lifting/Crush Hazard. DO NOT lift trowel with pans attached.

7. Once the correct adjustment is made, tighten the lock nut on the trowel arm to lock in place.

8. Loosen locking nuts on the adjustment ﬁxture, and remove trowel arm.

9. Repeat steps for the remaining trowel arms.

PAGE 42 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

WARNING

ALWAYS install pans either on the work area or on an area that is next to and level with the work area. DO NOT lift the trowel when the pans are attached.

MAINTENANCE

Refer to Figure 47 when installing pans onto ﬁnisher blades.

Tie-Down Knob

Tie-Down, Blade

Blade Assembly

Z-Clip, Pan

Figure 47. Z-Clip Finisher Pan Installation

1. Lift trowel just enough to slide pan under blades. Lower

ﬁnisher onto pan with blades assembly adjacent to Z-Clips.

2. Rotate blades into position under Z-Clips. Ensure that

the blades are rotated in the direction of travel when the machine is in operation or use the engine to rotate the blades into position.

Checking Steering Pressure

CAUTION

This procedure will require two or more people. The trowel will need to be "run up" while remaining stationary or otherwise held in position. If a "hover" is difﬁcult to maintain the trowel can be butted up to 2 or 3 stakes or to some other none-moveable items.

1. Remove the Left Side Access Cover and insert the test pressure gauge (300 to 600 PSI) as shown in Figure 48 into the left steering valve's diagnostic quick coupler.

2. Verify the hydraulic ﬂuid level is correct.

3. Start the engine and allow the unit to warm up.

4. Move the throttle lever to FULL engine RPM.

5. View the guage and record the reading.

Interpreting the Pressure Reading

WARNING

Charge/Steering Pressure must NEVER exceed 300 PSI nor go below 150 PSI. Pressure too high may result in pressure leaks while pressure too low may result in system damage.

3. Attach the blade tie-downs to the far side of the Z-Clip brackets with tie-down knobs as shown in ﬁgure 42.

4. Check to make certain that the blade edges are secured under the Z-Clips and the tie-downs are secured completely over the edges of the blade bar before the machine is put back into operation.

Hydraulic Steering Pressure

WARNING

NEVER use your hand to ﬁnd hydraulic leaks. Use a piece of wood or cardboard. Hydraulic ﬂuid injected into the skin must be treated by a knowledgable physician immediately or severe injury or death can occur.

Many hydraulic problems are a result of low ﬂuid levels. Before checking any other possibilities, make sure the hydraulic ﬂuid is at the proper level in the hydraulic ﬂuid tank.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 43

MAINTENANCE

Steering Pressure Adjustment

2000

3000

1000

200

150

4000

100

250

300

bar

5000

psi

WIKA

Figure 48. Steering Pressure Check

The left steering valve's factory setting is 230 PSI, however some operators may prefer a more responsive steering (higher pressure required; 300 PSI maximum) and some operators may prefer a "softer feel" (lower pressure required; not less than150 PSI).

Figure 49. Steering Pressure Adjustement

Remember, the trowel will need to be kept stationary during "run-up" while checking the pressure.

1. Remove front grille guard.

2. Loosen jam nut on pilot relief valve (Figure 49).

3. Use allen wrench to adjust the steering pressure to the desired setting. (between 150 and 300 PSI) See Checking Steering Pressure procedures.

4. Retighten jam nut.

5. Remove pressure guage and reinstall access grilles.

PAGE 44 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

Decommissioning is a controlled process used to safely retire a piece of equipment that is no longer serviceable. If the equipment poses an unacceptable and unrepairable safety risk due to wear or damage or is no longer cost effective to maintain, (beyond life-cycle reliability) and is to be decommissioned, (demolition and dismantlement), the following procedure must take place:

1. Drain all ﬂuids completely. These may include oil, Diesel, hydraulic oil and antifreeze. Dispose of properly in accordance with local and governmental regulations. Never pour on ground or dump down drains or sewers.

2. Remove battery and bring to appropriate facility for lead reclamation. Use safety precautions when handling batteries that contain sulfuric acid, (See page 11).

3. The remainder can be brought to a salvage yard or metal reclamation facility for further dismantling.

DECOMMISSIONING TROWEL

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 45

FUEL SYSTEM DIAGRAM

FUEL FILTER

FUEL LINE

FUEL RETURN LINE

FUEL DELIVERY LINE

INJECTOR PUMP

INJECTOR

FUEL RETURN LINE

FUEL TANK

PAGE 46 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

NOTES

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 47

WIRING DIAGRAM (ENGINE)

RIGHT-SIDE

RETARDANT SPRAY

YELLOW

J1-1

10A

J1-2

YELLOW

SPLICE

RED

RED 10 AWG

RED

SWITCH

M F

IGNITION

SWITCH

5 1

RED

BROWN

RED 10 AWG

B ST

STARTER

BATTERY

2 3 4

RETARDANT SPRAY

P13

RED/YEL

WHITE

SPLICE

RIGHT-SIDE

PUMP MOTOR

PUMP

MOTOR

BLK

RED

BLK

RED

COMMON

MAIN RELAY

RETARDANT SPRAY

RED (86)

COIL

BLACK (85)

LEFT-SIDE

SWITCH

M F

GND

K1-1 NC

87A

RED 10 AWG

K1-2 NO

COMMON

BLK

+12VDC ORANGE

GLOW PLUG RELAY COIL

P17

RED/YEL

BLK 10 AWG

WHITE 10 AWG (+12VDC)

K2-1 NC

87A

RED 10 AWG

K2-2 NO

COIL

BLUE PINK BLK

LEFT-SIDE

RETARDANT SPRAY

PUMP MOTOR

PUMP

MOTOR

BLK

RED

BLK

GNDGND

RED +12VDC

FUSE

BLOCK

10A

30A

GLOW

PLUG

TIMER

456 1

GLOW

PLUGS

ORANGE

PURPLE

SPLICE

CONNECT TO

CHASSIS GROUND

HOUR

METER

RED

BLK

RED 10 AWG

ENGINE STATUS

INDICATOR

1 2

4 5

1 2

4 5

BLK

GND

SEAT

KILL SWITCH

GRAY ORANGE

YELLOW

BLK

RED

BLK

RED

BLK

RED

SPLICE

PURPLE

BLK

RED

BLK

RED

BLK

RED

RED 10 AWG

P14

BLK

212

WHT

BLK

212

WHT

P10

BLK

212

WHT

P18

BLK

212

WHT

P19

BLK

212

WHT

P20

BLK

212

WHT

LIGHT SWITCH

OIL PRESSURE

SWITCH

TEMPERATURE

SWITCH

FUEL

SENSOR

INJECTION

PUMP

FUEL SHUT-OFF SOLENOID

RIGHT FRONT

LIGHT

DS1

RIGHT LIGHT

DS2

RIGHT REAR

LIGHT

DS3

LEFT FRONT

LIGHT

DS4

LEFT

LIGHT

DS5

LEFT REAR

LIGHT

DS6

BLK

GND

BLK

GND

BLK

GND

50A

GND

ALL WIRES ARE 16 AWG EXCEPT WHERE NOTED.

RED

BLUE/WHITE (CHARGE LAMP)

RED 10 AWG

PAGE 48 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

RED

ALTERNATOR

WIRING DIAGRAM (ENGINE)

CONNECTOR ORIENTATION

(FRONT VIEW)

C D E

F G H

I J

2 1

A B

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 49

6 34251

RELAY ORIENTATION

87a

85 86

K L

8787a

Symptom Possible Problem Solution

Engine running rough or not at all.

Safety stop switch not functioning.

Trowel bounces, rolls concrete, or makes uneven

swirls in concrete.

Machine has a perceptible rolling motion while

running.

TROUBLESHOOTING

Troubleshooting (Ride-On Trowel)

Stop switch malfunction?

Fuel?

Ignition?

Bad contacts? Replace switch.

Loose wire connections? Check wiring. Replace as necessary.

Other problems? Consult engine manufacturer’s manual.

Blades?

Pitch Adjustment?

Bent trowel arms?

Trowel arm bushings?

Thrust collar?

Thrust collar bushing?

Thrust bearing worn?

Main shaft?

Yoke?

Blade Pitch?

Make sure that the stop switch is functioning when the

operator is seated. Replace switch if necessary.

Look at the fuel system. Make sure there is fuel being

supplied to the engine. Check to ensure that the fuel

ﬁ lter is not clogged.

Check to ensure that the ignition switch has power and

is functioning correctly.

Make sure blades are in good condition, not excessively

worn. Finish blades should measure no less than 2

inches (50mm) from the blade bar to the trailing edge,

combo blades should measure no less that 3.5 inches

(89mm). Trailing edge of blade should be straight and

parallel to the blade bar.

Check that all blades are set at the same pitch angle

as measured at the spider. A ﬁ eld adjustment tool

is available for height adjustment of the trowel arms

(contact Parts Department).

Check the spider assembly for bent trowel arms. If one

of the arms is even slightly bent, replace it immediately.

Check the trowel arm bushings for tightness. This can

be done by moving the trowel arms up and down. If

there is more than 1/8 inch (3.2 mm) of travel at the

tip of the arm, the bushings should be replaced. All

bushings should be replaced at the same time.

Check the ﬂ atness of the thrust collar by rotating it on

the spider. If it varies by more than 0.02 inch (0.5 mm)

replace the thrust collar.

Check the thrust collar by rocking it on the spider. If it

can tilt more than 1/16 inch (1.6 mm) - as measured at

the thrust collar O.D., replace the bushing in the thrust

collar.

Check the thrust bearing to see that it is spinning freely.

Replace if necessary.

The main output shaft of the gearbox assembly should

be checked for straightness. The main shaft must run

straight and cannot be more than 0.003 inch (0.08 mm)

out of round at the spider attachment point.

Check to make sure that both ﬁ ngers of the yoke press

evenly on the wear cap. Replace yoke as necessary.

Check to ensure that each blade is adjusted to have the

same pitch as all other blades. Adjust per maintenance

section in manual.

PAGE 50 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

TROUBLESHOOTING

Troubleshooting (Ride-On Trowel) - continued

Symptom Possible Problem Solution

Check all electrical connections in the lighting circuit.

Wiring?

Lights (optional) not working.

Retardant spray (optional) not working.

Steering is unresponsive.

Operating position is uncomfortable. Seat adjusted for operator? Adjust seat with lever located on the front of the seat.

Linkage on Twin Pitch Tower not working.

Clutch slipping or sluggish response to engine

speed change.

Lights?

Bad switch?

Bad fuse? Check fuse. Replace fuse if defective.

Retardant? Check retardant level in tank. Fill tank as required.

Wiring?

Bad switch?

Bad spray pump?

Bad fuse? Check fuse. Replace fuse if defective.

Blade speed out of adjustment? See section on blade speed adjustment.

Pivots?

Hydraulic pressure?

Broken pitch tower components?

Defective drive pitch cable? Inspect drive pitch cable. Replace if defective or broken.

Worn belts? Replace belt.

Clutch out of adjustment?

Worn or defective clutch parts? Replace parts as necessary.

Worn bearings in gearbox?

Worn or broken gears in gearbox?

Verify wiring is in good condition with no shorts. Replace

defective wiring or components immediately.

If +12VDC is present at light ﬁ xture connector when light

switch is activated and light does not turn on, replace

light bulb.

Check the continuity of light switch. Replace light switch

if defective.

Check all electrical connections in the spray pump

circuit. Verify wiring is in good condition with no shorts.

Replace defective wiring or components immediately.

Check the continuity of both left and right spray switches

(palm handles). Replace spray switch if defective..

If +12VDC is present at pump connector when spray

switch is activated and pump does not operate, replace

spray pump.

Check to ensure free movement of hydraulic drive

motors.

Check to ensure that hydraulic pressure is adequate.

See section on checking hydraulic pressure.

Inspect all pitch tower components. Replace all defective

components immediately.

Adjust per instructions in maintenance section of this

manual.

Rotate input shaft by hand. If shaft rotates with difﬁ culty,

check the input and output shaft bearings. Replace as

necessary.

Verify that the gearbox shaft rotates when the input shaft

is rotated. Replace both the worm and worm gear as a

set.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 51

Symptom Possible Problem Solution

Engine will not start or start is delayed, although engine can be turned over.

At low temperatures engine will not start.

Engine ﬁ res but stops soon as starter is switched off.

Engine stops by itself during normal operation.

Low engine power, output and speed.

TROUBLESHOOTING

Troubleshooting (Engine)

No Fuel reaching injection pump? Add fuel. Check entire fuel system.

Defective fuel pump? Replace fuel pump.

Fuel ﬁ lter clogged? Replace fuel ﬁ lter and clean tank.

Faulty fuel supply line? Replace or repair fuel line.

Compression too low?

Fuel pump not working correctly? Repair or replace fuel pump.

Oil pressure too low? Check engine oil pressure.

Low starting temperature limit exceeded?

Defective battery? Charge or replace battery.

Air or water mixed in fuel system?

Engine oil too thick?

Defective battery? Replace battery.

Fuel ﬁ lter blocked? Replace fuel ﬁ lter.

Fuel supply blocked? Check the entire fuel system.

Defective fuel pump? Replace fuel pump.

Fuel tank empty? Add fuel.

Fuel ﬁ lter blocked? Replace fuel ﬁ lter.

Defective fuel pump? Replace fuel pump.

Mechanical oil pressure shutdown sensor stops the engine due to low oil?

Fuel tank empty? Replace fuel ﬁ lter.

Fuel ﬁ lter clogged? Replace fuel ﬁ lter.

Fuel tank venting is inadequate? Ensure that tank is adequately vented.

Leaks at pipe unions?

Speed control lever does not remain in

selected position?

Engine oil level too full? Correct engine oil level.

Injection pump wear?

Check piston, cylinder and valves. Adjust or repair per engine repair manual.

Comply with cold starting instructions and proper oil viscosity.

Check carefully for loosened fuel line

coupling, loose cap nut, etc.

Reﬁ ll engine crankcase with correct type of oil for winter environment.

Add oil. Replace low oil shutdown sensor if necessary.

Check threaded pipe unions tape and tighten unions a required.

See engine manual for corrective action.

Use No. 2-D diesel fuel only. Check the fuel injection pump element and delivery valve assembly and replace as necessary.

PAGE 52 — HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12)

Symptom Possible Problem Solution

Low engine power output and low speed, black exhaust smoke.

Engine overheats.

TROUBLESHOOTING

Troubleshooting (Engine) - continued

Air ﬁ lter blocked? Clean or replace air ﬁ lter.

Incorrect valve clearances? Adjust valves per engine speciﬁ cation.

Malfunction at injector? See engine manual.

Too much oil in engine crankcase?

Entire cooling air system contaminated/ blocked?

Fan belt broken or elongated? Change belt or adjust belt tension.

Coolant insufﬁ cient? Replenish coolant.

Radiator net or radiator ﬁ n clogged with dust? Clean net or ﬁ n carefully.

Fan, radiator, or radiator cap defective? Replace defective part.

Thermostat defective? Check thermostat and replace if necessary.

Head gasket defective or water leakage? Replace parts.

Drain off engine oil down to uppermark on

dipstick.

Clean cooling air system and cooling ﬁ n areas.

HHXD5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #2 (05/04/12) — PAGE 53

OPERATION MANUAL

HERE’S HOW TO GET HELP

Multiquip Inc trademarks are the property of their respective owners and used with permission.

This manual

The information and speciﬁcations included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change speciﬁcations, design or the information published in this publication at any time without notice and without incurring any obligations.

PLEASE HAVE THE MODEL AND SERIAL

NUMBER ON-HAND WHEN CALLING

United StateS

Multiquip Corporate Ofﬁce MQ Parts Department

18910 Wilmington Ave. Carson, CA 90746 Contact: mq@multiquip.com

Service Department Warranty Department

800-421-1244 310-537-3700

Technical Assistance

800-478-1244 Fax: 310-943-2238

Tel. (800) 421-1244 Fax (800) 537-3927

Fax: 310-537-4259 800-421-1244

800-427-1244 310-537-3700

310-537-3700

Fax: 800-672-7877 Fax: 310-637-3284

Fax: 310-943-2249

mexico United Kingdom

MQ Cipsa Multiquip (UK) Limited Head Ofﬁce

Carr. Fed. Mexico-Puebla KM 126.5 Momoxpan, Cholula, Puebla 72760 Mexico Contact: pmastretta@cipsa.com.mx

Tel: (52) 222-225-9900 Fax: (52) 222-285-0420

Unit 2, Northpoint Industrial Estate, Globe Lane, Dukinﬁeld, Cheshire SK16 4UJ Contact: sales@multiquip.co.uk

Canada

Multiquip

4110 Industriel Boul. Laval, Quebec, Canada H7L 6V3 Contact: jmartin@multiquip.com

Tel: (450) 625-2244 Tel: (877) 963-4411 Fax: (450) 625-8664

Tel: 0161 339 2223 Fax: 0161 339 3226

, the MQ logo and the Whiteman logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other

MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.

Your Local Dealer is:

PN: 23323

Multiquip HHXD5 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual