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HTH
User Manual
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Multiquip HTH User Manual

OperatiOn and parts Manual
HtH-series
ride-On pOWer trOWel
Revision #6 (02/22/11)
To find the latest revision of this
publication, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
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.
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.
TABLE OF CONTENTS
Proposition 65 Warning ..........................................2
Silicosis/Respiratory Warnings ............................... 3
Table of Contents ....................................................4
Parts Ordering Procedures .....................................5
Training Checklist ................................................... 6
Daily Pre-Operation Checklist ................................7
Safety Information .............................................8-13
Specifications .......................................................14
General Information .............................................. 15
WHiteMan — HtH ride-On pOWer trOWel
Controls and Indicators ....................................16-17
Initial Start-Up .................................................. 18-20
Maintenance ....................................................21-23
Troubleshooting ...............................................24-25
Explanation of Code in Remarks Column ............ 26
Suggested Spare Parts ........................................27
Left/Right Pivot Assy .......................................28-30
Left/Right Twin Pitch Assy ............................... 32-35
Engine (Vanguard) ...........................................36-38
Engine (Kubota) ...............................................40-42
Engine (Kubota) below S/N JG53027 ..............44-45
Hydraulic Steering Assy ..................................46-47
Valve Assy (Left Side) ......................................48-49
Valve Assy (Right side) ....................................50-51
Handle Assy (Left side) ...................................52-53
Hydraulic Drive Assy .......................................54-57
4-Blade Spider (Left) Assy ...............................58-59
4-Blade Spider (Right) Assy ............................60-61
Conversion 4-Blade to 5-Blade ............................. 62
5-Blade Spider (Left) Assy ...............................63-64
5-Blade Spider (Right) Assy ............................65-66
Stabilizer Ring Assy .........................................68-69
Top Panel (Left side) ........................................ 70-71
Top Panel (Right side) .....................................72-73
Front Panel (Right) Vanguard .......................... 74-75
Front Panel (Right) Kubota ..............................76-77
Seat and Frame ............................................... 78-79
Frame and Fuel Tank .......................................80-81
Foot Pedals ......................................................82-83
Battery ............................................................. 84-85
Spray Assy.......................................................86-87
Light Assy ........................................................88-89
E-Z Mover and Lift Handle ...............................90-91
Wiring Diagram (Vanguard) .................................. 92
Wiring Diagram (Kubota) ...................................... 93
Terms and conditions of sale — parts .................. 94
NOTE: Specification and part number
are subject to change without notice.
PARTS ORDERING PROCEDURES
Ordering parts has never been easier!
If you have an MQ Account, to obtain a Username
Effective:
Choose from three easy options:
January 1st, 2006
Best Deal!
Order via Internet (Dealers Only):
Order parts on-line using Multiquip’s SmartEquip website!
■ View Parts Diagrams
■ Order Parts
■ Print Specification Information
Goto www.multiquip.com and click on
Order Parts
to log in and save!
Order via Fax (Dealers Only):
All customers are welcome to order parts via Fax. Domestic (US) Customers dial: 1-800-6-PARTS-7 (800-672-7877)
Order via Phone:
Non-Dealer Customers:
Contact your local Multiquip Dealer for parts or call 800-427-1244 for help in locating a dealer near you.
and Password, E-mail us at: parts@multiquip.
com.
To ob tain an MQ Acc ou nt, co nt ac t yo ur District Sales Manager for more information.
Use the internet and qualify for a 5% Discount on Standard orders for all orders which include complete part numbers.*
Fax your order in and qualify for a 2% Discount on Standard orders for all orders which include complete part numbers.*
Domestic (US) Dealers Call:
1-800-427-1244
International Customers should contact their local Multiquip Representatives for Parts Ordering information.
Note: Discounts Are Subject To Change
Note: Discounts Are Subject To Change
When ordering parts, please supply:
❒ Dealer Account Number ❒ Dealer Name and Address ❒ Shipping Address (if different than billing address) ❒ Return Fax Number ❒ Applicable Model Number ❒ Quantity, Part Number and Description of Each Part
NOTICE
All orders are treated as Standard Orders and will
ship the same day if received prior to 3PM PST.
❒ Specify Preferred Method of Shipment: ✓ UPS/Fed Ex ✓ DHL
■ Priority One ✓ Truck
■ Ground
■ Next Day
■ Second/Third Day
www.multiquip.com
WE ACCEPT ALL MAJOR CREDIT CARDS!
TRAINING CHECKLIST
This checklist will lists 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 operator’s.
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COMMENTS:
DAILY PRE-OPERATION CHECKLIST
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DAILY PRE-OPERATION CHECKLIST
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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 specifically 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
GENERAL SAFETY
NOTICE
This equipment should only be operated by trained and
Whenever necessary, replace nameplate, operation and
accident due to equipment modifications. Unauthorized
recommended by Multiquip for this equipment. Damage
keep
Also, know the phone numbers
fire 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 fitting 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
influence 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.
qualified personnel 18 years of age and older.
safety decals when they become difficult read.
 Manufacturer does not assume responsibility for any
equipment modification 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
fire extinguisher.
 ALWAYS know the location of the nearest
first 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.
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
flow of cooling air. NEVER operate this equipment in any enclosed or narrow area where free flow of the air is restricted. If the air flow is restricted it will cause injury to people and property and serio u s dam a ge to t h e equipment or engine.
NEVER operate the equipment in an explosive
atmosphere or near combustible materials. An explosion or fire could result causing severe
bodily harm or even death.
WARNING
 If applicable, 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.
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
 DO NOT place ha nds or fi ngers inside e ngi ne
compartment when engine is running.
NEVER operate the engine with heat shields or
guards removed.
 Keep fingers, 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 any emergency
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
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.
all warranties.
 DO NOT remove the engine oil drain plug while the
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 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
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,
muffler 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 filter or with a dirty air
filter. Severe engine damage may occur. Service air filter 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
fluids. Fuel is extremely flammable and its vapors can cause an explosion if ignited.
ALWAYS refuel in a well-ventilated area, away from
sparks and open flames.
 ALWAYS use extreme caution when working with
flammable liquids.
 DO NOT fill the fuel tank while the engine is running
or hot.
DANGER
 DO NOT
battery will explode.
DO NOT expose the battery to open flames,
sparks, cigarettes, etc. The battery contains combustible gases and liquids. If these gases and liquids come into contact with a flame or spark, an explosion could occur.
WARNING
 ALWAYS wear safety glasses wh en
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 overfill 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 flames.
 NEVER use fuel as a cleaning agent.
 DO NOT smoke aroun d or near the
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.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 11
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.
.
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,
SAFETY INFORMATION
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 float pans attached unless
safety catches are used and are specifically cleared for such transport by the manufacturer.
NEVER hoist the trowel more than three feet off the
ground with float 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. Trailer tires should be inflated to 50 psi cold 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 sufficient
strength.
 DO NOT lift machine to unnecessary heights.
 ALWAYS tie down equipment during transpor t by
securing the equipment with rope.
PAGE 12 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
• 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-knifing. 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 filters.
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.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 13
HTH — SPECIFICATIONS
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HYDROSTATIC
DRIVE
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HEIGHT
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WIDTH
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Figure 1. HTH Dimension /Specifications
NOTE:
1. This value includes the seat height.
2. Sound pressure is a weighted measure. Measured at the operators ear position while the ride-on trowel is operat­ing at full throttle on concrete in a manner most often experienced in “normal” circumstances. Sound pressure may vary depending upon the condition of the concrete. Hearing protection is always recommended.
PAGE 14 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
3. The vibration level indicated is the maximum RMS (Root Mean Square) value obtained at the handle grip while operating the ride-on trowel on curing concrete in a man­ner most often experienced in “normal” circumstances. Values were obtained from all three axes of motion. The values shown represent the maximum RMS value from these measurements.
4. “AW” stands for anti-wear and “MV” stands for multi- viscosity. The 68 refers to the general viscosity range and is similar to 10W40-engine oil (hot weather) and 10W30 (cool weather).
HTH — GENERAL INFORMATION
HTH RIDE-ON TROWEL FAMILIARIZATION
The HTH series Ride-On Power Trowels are designed for the floating and finishing of concrete slabs.
Take a walk around the HTH Ride-On Power Trowel. Take notice of all the entire major components (see Figures 2 and 3, Page
11) like the engine, blades, pitch towers, air cleaner, ignition switch etc. Check that there is always oil in the engine, and hydraulic oil in the hydraulic oil 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 HTH Ride-On Power Trowel.
Before using your HTH Ride-On Power 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
The HTH Ride-On Power Trowel is available with either a standard 31 HP Vanguard gas engine or 38 HP Kubota 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 from Whiteman. Please contact your nearest Multiquip Dealer for a replacement should the original manual disappear.
Hydraulic Steering
Dual joystick controls located to the left and right of the operator are provided for steering the HTH-Ride on Power Trowel. The joysticks are linked to three hydraulic steering cylinders located within the frame of the machine. When the right side steering joystick is moved either forward or backward it will cause that side of the ride-on power trowel to move in either a forward or reverse direction. Moving the same joystick left or right causes the trowel to move in either the left or right direction.
When the left side steering joystick is moved, it will cause the left side of the ride-on trowel to travel in either a forward or reverse direction.
Hydraulic Pump
Delivers a continuous controlled flow of hydraulic fluid to the hydraulic motors.
Training
For proper training, please use the “TRAINING CHECKLIST” located in the front of this manual(Page A). This checklist will provide an outline for an experienced operator to provide train­ing to a new operator.
Blades
The blades of the ride-on power trowel finish the concrete as they are swirled around the surface. Blades are classified as float (10 or 8 inches wide), and finish (6 inches wide). The HTH is equipped with either four or five blades per rotor equally spaced in a radial pattern and attached to vertical rotating shaft by means of a spider assembly.
Hydraulic Motor
Independent hydraulic drive motors are coupled to the engine­powered hydrostatic pumps. Each motor drives a spider as­sembly.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 15
HTH — CONTROLS AND INDICATORS
Figures 2 and 3 show the location of the controls, indicators and general maintenance parts. Each control may perform more than one function. All functions of each control are described below.
1. Seat – Place for operator to sit. Engine will not start unless operator is seated. Seat is adjustable.
2. Steering Control (right side) -Allows the unit to move in either a forward, reverse left or right direction.
3. Throttle Control Lever – Controls the speed of the engine. Move the hand lever forward to increase engine speed (high), backwards to decrease engine speed (low).
4. Light Switch – When activated, turns on six halogen lights. Lights offer better visibility when working indoors.
5. Ignition Switch – With key inserted turn clockwise to start engine.
13. Radiator/Filler Cap –Holds coolant or water necessary to keep engine at a safe operating temperature. Remove this cap to add water or antifreeze.
14. Kill Switch - Shuts down engine when operator is not sitting in seat.
15. Lights – Low voltage halogen light.
16. Hydraulic Oil Filler Cap – Remove this cap to add hy-
draulic oil.
17. Hydraulic Oil Sight Glass - Indicates the level of the hydraulic oil in the reservoir.
18. Right Foot Pedal – Controls blade speed. Slow blade speed is accomplished by slightly depressing the foot pedal. Maximum blade speed is accomplished by fully depressing the foot pedal.
19. Spray Nozzle – Spray nozzle for retardant.
20. Left Foot Riser – Operator foot rest pedal.
21. Fuel Gauge/Filler Cap - Indicates the amount of fuel in
the fuel tank. Remove this cap to add fuel.
22. Hydraulic Reservoir – Part of frame. Holds hydraulic oil necessary for pump operation.
Figure 2. HTH Controls and Indicators (Front)
6. Twin Pitch Control – Both pitch towers are linked together. One crank may be turned to adjust the blade pitch simultaneously or individually control for each set of blades.
7. Pre-Heat Indicator Light - Lights blue during engine start-up. Indicates that engine glow plugs are being pre­heated. Light will go off after approximately 10 seconds.
8. Charge Indicator Light - Lights red when electrical system is not charging properly.
9. Water Indicator Light - Lights red when water tempera­ture is high.
10. Oil Indicator Light - Lights red when oil pressure is low.
11. Steering Control (left side) -Allows the unit to move in
a forward or reverse direction only.
23. Lift Loops –Located on both the left and right sides of the main frame. Used when the trowel must be lifted onto a concrete slab.
24. Engine Oil Dipstick – Indicates engine oil level.
25. Engine Oil Filler Cap - Remove this cap to add engine
oil.
26. Air Filter – Prevents dirt and other debris from entering the fuel system.
Figure 3. HTH Controls and Indicators (Rear)
12. Retardant Spray Control Button – When pressed allows retardant spray to flow through the spray nozzle located at the front of the machine.
PAGE 16 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
HTH — CONTROLS AND INDICATORS
27. Oil Filter – Provides oil filtering for the engine.
28. Retardant Spray Motor – Used with the spray control
button.
29. Retardant Spray Tank - Holds 5 gallons of retardant or water.
30. Battery - Provides +12V DC power to the electrical sys­tem.
31. Hydraulic Suction Filter - Filters hydraulic fluid prior to entering the system.
32. Hydraulic Return Filter - Filters hydraulic returning to reservoir.
NOTE
Read this entire instruction manual completely before attempt­ing to operate this machine.
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.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 17
HTH — INITIAL START-UP
This section is intended to assist the operator with the initial start-up of the HTH series Ride-On Power Trowel. 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.
CAUTION
Failure to understand the operation of the HTH Ride-On Power Trowel could result in severe damage to the trowel or personal injury.
See Figures 2 and 3 (Page 11) for the location of any control or indicator referenced in this manual.
Engine Oil
1. Pull the engine oil dipstick from its holder.
2. Determine if engine oil is low (Figure 4), add correct amount of engine oil to bring oil level to a normal safe level.
Fuel
1. Determine if the engine fuel is low (Figure 6). If fuel level is low, remove the fuel filler cap and fill with either diesel fuel or regular unleaded gasoline depending on the type of engine. 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.
Figure 6. Fuel Gauge
Figure 4. Engine Oil Dipstick
Hydraulic Oil
1. Determine if the hydraulic oil is low by observing the level of oil in the hydraulic Oil Sight Glass (Figure 5).
NOTE
Proper hydraulic operating oil level is MIDDLE of sight glass, with trowel on level surface, and engine off.
CAUTION
Never store the ride-on trowel with fuel in the tank for any ex­tended period of time. Always clean up spilled fuel immediately.
Starting the Engine
1. With one foot on the ground and the other foot placed on the trowel’s platform, grab hold of any part of the frame and lift yourself onto the trowel. Then sit down in the operator’s seat.
CAUTION
DO NOT grab hold of the joysticks or pitch tower assemblies to lift yourself onto the trowel. Pulling on the joysticks or pitch tower assemblies repeatedly will weaken the units. Use any part of the frame to lift yourself onto the trowel.
2. The Whiteman Ride-On Power trowel is equipped with a safety kill switch. This switch is located beneath the seat assembly. Remember the engine will not start unless an operator is sitting in the operator’s seat. The weight of an operator depresses an electrical switch, which will allow the engine to start.
CAUTION
NEVER disable or disconnect the kill switch. It is provided for the operators’ safety and injury may result if it is disabled, disconnected or improperly maintained.
Figure 5. Hydraulic Oil Sight Glass
PAGE 18 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
HTH — INITIAL START-UP
PRE
HEAT
CHARGE
WATER
OIL
ON FOR APPROXIMATELY 5-10 SECONDS WHEN IGNITION SWITCH IS IN THE PRE HEAT POSITION.
OIL AND CHARGE INDICATOR LIGHTS COME ON WHEN IGNITION SWITCH IS IN THE POSITION.
3. It is recommended that the kill switch be used to stop the engine after every use. Doing this will verify that the switch is working properly and presents no danger to the operator. Remember to turn the key to the “OFF” position after stopping the machine. Not doing so may drain your units’ battery.
4. Place the engine throttle lever (Figure 7) in the LOW position.
Figure 7. Engine Throttle Control Lever (Low)
5. Insert the ignition key into the ignition switch (Figure 8).
NOTE
In cold weather turn the ignition key counter clockwise to the preheat position, wait until the BLUE preheat indicator goes off before turning the ignition key clockwise to the start position.
7. Turn ignition key fully clockwise and listen for engine to start. Once engine has started release ignition key. Let engine warm for a few minutes.
8. Place the engine throttle lever (Figure 10) in the HIGH position.
Figure 10. Engine Throttle Control Lever (High)
Figure 8. Ignition Switch and Key
6. Turn the ignition key clockwise to the (start) position. The oil and charge indicator lights (Figure 9) should be on.
9. The engine should be running at full RPM.
10. Repeat this section a few times to get fully acquainted with the engine starting procedure.
Steering
Two joysticks (Figure 11) located to the left and right of the operator’s seat provide directional control for the HTH Ride­On Power Trowel. Table 3 (Page 15) illustrates the various directional positions of the joysticks and their effect on the ride-on trowel.
NOTE
All directional references with respect to the joysticks are from the operator’s seat position.
Figure 9. Oil and Charge Indicator Lights
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 19
Figure 11. Left and Right Joystick Controls
HTH — INITIAL START-UP
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1. The foot pedal (Figure 12) solely controls blade 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.
2. Push both the left and right joysticks forward (Figure 13).
Figure 13. Joystick Control Forward Direction
3. With your right foot slowly depress the right foot pedal halfway. Notice that the ride-on power trowel begins to move in a forward direction. Release both joystick controls to stop forward movement then remove your right foot from the right foot pedal.
4. 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.
Figure 12. Blade Speed Control Foot Pedal
5. Practice maneuvering the ride-on trowel using the informa­tion listed in Table 3. Try to practice controlled motions as if you were finishing a slab of concrete. Practice edging and covering a large area
6. 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.
7. Push both the left and right joysticks backward (Figure
14) and repeat steps 3 through 6 while substituting the word reverse for forward.
Figure 14. Joystick Control Reverse Direction
PAGE 20 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
HTH — MAINTENANCE
ROD END
ADJUSTMENT
NUT
NOTE
See the engine manual supplied with your machine for ap­propriate engine maintenance schedule and troubleshooting guide for problems.
At the front of the book (Page B) there is a “Daily Pre-Operation Checklist”. Make copies of this checklist and use it on a daily basis.
CAUTION!
Disconnect spark plug wires and battery cables before attempt­ing any service or maintenance on the ride-on trowel.
MAINTENANCE SCHEDULE
Daily (8-10 Hours)
1. Check the fluid levels in the engine and reservoir, fill as necessary.
Weekly (30-40 Hours)
1. Relube arms, thrust collar and clutch
2. Replace blades if necessary.
3. Check and clean or replace the engine air filter as neces­sary.
4. Replace engine oil and filter as necessary, see engine manual.
Monthly (100-125 Hours)
1. Remove, clean, reinstall and relube the arms and thrust collar. Adjust the blade arms.
Yearly (500-600 Hours)
1. Check and replace if necessary the arm bushings, and thrust collar bushings.
2. Check pitch control cables for wear.
3. Adjust blade speed.
4. Replace hydraulic fluid and both hydraulic filters.
NOTE
After the first 200 hours, replace the hydraulic filter cartridges.
MAINTENANCE PROCEDURES
Checking/Adjusting Blade Speed
Because the two hydraulic drive motors operate independent of each other, the blade speed between them may vary. If the unit’s steering is difficult to control, the blade speeds may need to be checked, or if the spider is spinning noticeably faster or slower than the other side, the blade speed may need to be checked. It is also recommended that the blade speed be checked at least once a year.
Blade speed adjustment is a two-step process. First, the left spider’s speed should be checked and/or adjusted. Second, the right spider’s speed should be adjusted to match the left.
Left Spider Speed Adjustment
The left spider’s speed is adjusted by changing the length of the rod end spacing (Figure 15) at the front of the foot pedal. Lengthening the spacing increases the blade speed; shortening the spacing decreases the blade speed.
Figure 15. Blade Speed Control Foot Pedal
Right Spider Speed Adjustment
The right spider’s speed is adjusted by changing the length of the connecting rod on the pump actuation levers (Figure 16, Page 17). This rod is basically a turnbuckle. Rotating it in one direction increases the length and corresponding spider speed. Rotating it the opposite direction decreases the length and spider speed. The right spider’s speed should be within 3 rpm of the left.
A good starting point in the adjustment process is to adjust the rod such that both spiders begin to rotate at the same time when the foot pedal is slowly depressed. This will, generally, get the speeds fairly close. Close enough for use if instrumen­tation is unavailable (i.e. on the job site). From this point on, some form of instrumentation is required to verify that the right spider speed is within the tolerance specified above. A strobe or magnetic pickup type speed indicator is recommended to verify the speeds.
The speeds should be adjusted on a dry concrete floor with the blades pitched flat. Units with a Kubota engine should be set at 155-160 rpm with the engine at full speed. Units with a B&S-Dihatsu (Vanguard) engine should be set at 145-150 rpm with the engine at full speed.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 21
Figure 16. Pump Actuation
PUMP ACTUATION LEVERS
ADJUSTMENT NUT
HYDRAULIC PUMP
Levers/Speed Control Rod
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).
To fix this problem, each spider assembly can be pitched indi­vidually. With a Single Pitch machine, the operator is forced to constantly make adjustments on each pitch tower. On a Twin Pitch machine, the operator must lift up on one of the pitch control handles, disengaging the linkage between the towers. Once this is done, a pitch control crank can be turned to adjust the difference. Make sure to lock the linkage back in place when finished with adjustments.
Blade Pitch Adjustment Procedure
The maintenance adjustment of blade pitch is an adjustment that is made by a bolt (Figure 17) 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.
HTH — MAINTENANCE
There are some things to look for when checking to see if adjustment is necessary. Is the machine wearing out blades unevenly (i.e. one blade is 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? Do the pitch control towers rock back and forth? These are some of the indications that the blade pitch may need to be adjusted using the adjustment bolts on the trowel blade finger.
Figure 17. Blade Pitch Adjustment Bolt
The easiest and most consistent way to make this adjustment is to use the Trowel Arm Adjustment Fixture (P.N. 9177) that is manufactured by Whiteman. This fixture will allow consistent adjustment of the trowel arm fingers. It comes with all the hardware necessary to properly accomplish this maintenance and instructions on how to properly utilize this tool. Adjusting the trowel arm fingers without a fixture requires a special talent.
If a trowel arm adjustment fixture is not available and immediate adjustment is necessary; we suggest the following procedure. If you can see or feel which blade is pulling harder, adjust the bolt that corresponds to that blade. Another way to determine which blades need adjustment is to place the machine on a flat surface and pitch the blades as flat as possible. Now, 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.
It will be possible to 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 that after adjustment, the blades pitch correctly. Often times, if the blades are incorrectly adjusted, they will not be able to pitch flat. This occurs when the adjusting bolts have been raised too high. Conversely, sometimes the adjusting bolts are too low and the blades cannot be pitched high enough for finishing operations.
PAGE 22 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
HTH — MAINTENANCE
Changing A Blade
Whiteman recommends that all the blades on the entire ma­chine be changed at the same time. If only one or some of the blades are changed at one time, 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. Affix the bolts and lock washers.
6. Repeat steps 2-5 for all remaining blades.
Once the pressure gauges are installed and the spiders chained together, the system can be checked.
With the foot pedal in the idle position and the engine at full speed, the pressure should be 200 to 300 psi. If the pressure is less than 200 psi, the charge system may need to be inspected and/ or serviced. In particular, the suction filter and charge pump relief valve should be checked. The suction filter may be plugged, or the relief valve may be stuck. Either condition may cause low charge pressure.
With the engine at 50% to 70% of full speed, and spiders chained together, slowly depress the foot pedal and read the gauges. The pressure should get to at least 3,100 psi. If the pressure will not attain 3,100 psi, the pump should be inspected and/or serviced by an authorized service representative.
Checking Hydraulic Pressure
It should be mentioned that most hydraulic problems are a result of low fluid levels. Before checking any other possibilities, make sure the hydraulic fluid level is half way up the sight glass which is located at the right end of the frame.
Hydraulic pressure can be checked using a pressure gauge (Figure 18) with a range of at least 5,000 psi. The pressure taps are located on the front side of the hydraulic pumps on elbows. The 1/8" pipe plugs can be removed and a hose, attached to the gauge, screwed into each port. It is best to use two gauges simultaneously, but it is possible to use only one gauge and repeat the procedure for each side.
To fully test the hydraulic system, the spiders will need to be locked so that they cannot rotate. This can easily be done by wrapping a chain around an arm on each spider, thus chaining them together in the back of the trowel.
Figure 18. Pressure Gauge (Hydraulic Pump)
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 23
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.
HTH — TROUBLESHOOTING
Troubleshooting (Ride-On Mechanical 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
filter 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 field 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 flatness 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 fingers 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 24 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
HTH — TROUBLESHOOTING
Troubleshooting (Ride-On Mechanical 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.
Power head on Electric Pitch (optional) not
working.
Linkage on Twin Pitch not working.
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.
Steering linkage out of adjustment?
Worn components?
Broken or loose parts?
Wiring?
Switch?
Crank handles?
Broken part? Replace all broken parts immediately.
Verify wiring is in good condition with no shorts. Replace
defective wiring or components immediately.
If +12VDC is present at light fixture 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.
Adjust the connecting linkage found at the base of the
handle. Contact your MQ field service manager for
instructions.
Check for wear of steering bearings and linkage
components. Replace if necessary.
If the motor runs and the pitch is not affected, parts
inside the power head may be loose or broken. Return
power head to dealer for service.
Check all electrical connections and wiring. Check the
continuity at the power head unit. Verify that there is
voltage present at the power head switch with the key
switch in the “on” position.
Check the continuity of the switch. If switch is
malfunctioning, replace immediately.
Make sure that both crank handles are pushed down as
far as possible to ensure that the linkage is engaged.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 25
The following section explains the different symbols and
QTY. Column
— Item quantity can be indicated by a
A/R (As Required) is generally used for hoses or other
A blank entry generally indicates that the item is not sold separately. Other entries will be clarified in the “Remarks”
Some of the most common notes found in the “Remarks” Column are listed below. Other additional notes needed
same unique symbol will be included when this item is
— Used to list an effective serial
— Indicates that the part
part is NOT used on a specific model or model number
available items. Examples include battery cables, shims,
— Indicates that an item cannot be purchased as a separate item and is either part of an assembly/kit that can be purchased, or is not available
EXPLANATION OF CODE IN REMARKS COLUMN
remarks used in the Parts section of this manual. Use the help numbers found on the back page of the manual if there are any questions.
Numbers Used
number, a blank entry, or A/R.
NOTICE
The contents and part numbers listed in the parts section are subject to change without notice. Multiquip does not guarantee the availability of the parts listed.
SAMPLE PARTS LIST
NO. PART NO. PART NAME QTY. REMARKS
1 12345 BOLT ......................1 .....INCLUDES ITEMS W/%
2% WASHER, 1/4 IN. ...........NOT SOLD SEPARATELY
2% 12347 WASHER, 3/8 IN. ...1 .....MQ-45T ONLY
3 12348 HOSE ..................A/R ...MAKE LOCALLY
4 12349 BEARING ..............1 .....S/N 2345B AND ABOVE
NO. Column
Unique Symbols — All items with same unique
symbol
(@, #, +, %, or >) in the number column belong to the same assembly or kit, which is indicated by a note in the “Remarks” column.
Duplicate Item Numbers — Duplicate numbers indicate multiple part numbers, which are in effect for the same general item, such as different size saw blade guards in use or a part that has been updated on newer versions of the same machine.
NOTICE
When ordering a part that has more than one item number listed, check the remarks column for help in determining the proper part to order.
parts that are sold in bulk and cut to length.
Column.
REMARKS Column
to describe the item can also be shown.
Assembly/Kit — All items on the parts list with the
purchased.
Indicated by:
“INCLUDES ITEMS W/(unique symbol)”
Serial Number Break
number range where a particular part is used.
Indicated by:
“S/N XXXXX AND BELOW” “S/N XXXX AND ABOVE” “S/N XXXX TO S/N XXX”
Specific Model Number Use
is used only with the specific model number or model number variant listed. It can also be used to show a
variant.
Indicated by:
PART NO. Column
Numbers Used — Part numbers can be indicated by a
number, a blank entry, or TBD.
TBD (To Be Determined) is generally used to show a part that has not been assigned a formal part number at the time of publication.
A blank entry generally indicates that the item is not sold separately or is not sold by Multiquip. Other entries will be clarified in the “Remarks” Column.
PAGE 26 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
“XXXXX ONLY” “NOT USED ON XXXX”
“Make/Obtain Locally” — Indicates that the part can be purchased at any hardware shop or made out of
and certain washers and nuts.
“Not Sold Separately”
for sale through Multiquip.
HTH — SUGGESTED SPARE PARTS
1 to 3 Units
Qty. P/N Description
4............. 0183 ....................... COTTER PIN
6............. 10221 ..................... BUSHING
2............. 11648 ..................... YOKE PIVOT SHAFT
1............. 10208 ..................... MUFFLER (VANGUARD)
1............. 11732 ..................... MUFFLER (KUBOTA)
1............. 12194 ..................... HEAT SHIELD (VANGUARD)
1............. 11993 ..................... OVERFLOW BOTTLE
6............. 11984 ..................... IN-LINE FUEL FILTER
10........... 11141 ..................... SPACER ROD END
10........... 11142 ..................... ROD END
20........... 11146 ..................... JAM NUT
1............. 11422 ..................... STEERING CLY. VALVE (Right Hand)
1............. 11423 ..................... STEERING CLY. VALVE (Left Hand)
1............. 11619 ..................... HANDLE ASSY (Left Valve)
1............. 11455 ..................... HANDLE ASSY (Right Valve)
3............. 12473 ..................... SPRAY SWITCH(Left Handle)
2............. 12487 ..................... BOOT, TOP HANDLE (Left Side)
3............. OEM2783AM ......... 2-PIECE HANDLE w/HARDWARE (L/S)
6............. OEMAA5 ................ UPPER SCREW, LEFT SIDE HANDLE
6............. OEMAA7 ................ LOWER SCREW, LEFT SIDE HANDLE
6............. 11402 ..................... FILTER HYDRAULIC RETURN
1............. 11579 ..................... MOTOR 12VOLT FAN
2............. 11580 ..................... FAN COOLING BLADE
5............. 11884 ..................... FILTER HYDRAULIC SUCTION
5............. 2829 ....................... ARM
5............. 1986 ....................... LEVER (RIGHT HANDLE)
10........... 9006 ....................... ROLL PIN
10........... 11039 ..................... BUSHING
3............. 2143 ....................... SPRING (RIGHT HANDLE)
2............. 12048 ..................... SPIDER PLATE
10........... 1162 A ...................GREASE CAP
10........... 11602 ..................... SCREW
3............. 11419 ..................... WEAR PLATE
3............. 11431 ..................... THRUST COLLAR
3............. 11464 ..................... BUSHING
3............. 11493 ..................... BEARING
5............. 2621 ....................... GREASE FITTING
3............. 11952 ..................... SPACER
3............. 11953 ..................... RETAINER
6............. 12181 ..................... RING RETAINING
3............. 9005 ....................... LEVER (LEFT SIDE)
3............. 9111 ....................... SPRING (LEFT HAND)
10........... 1322 ....................... SCREW
4............. 11078 ..................... KEY IGNITION (VANGUARD)
2............. 10958 ..................... SWITCH IGNITION (VANGUARD)
3............. 10568 ..................... CABLE THROTTLE
3............. 11098 ..................... CIRCUIT BREAKER
1............. 11246 ..................... DECAL KIT
10........... 2153 ....................... ROD END
Qty. P/N Description
3............. 2673 ....................... CIRCUIT BREAKER
3............. 4682 ....................... SWITCH, LIGHT
3............. 8381 ....................... BOOT, SWITCH
3............. 11694 ..................... HOUR METER
1............. 10313 ..................... BATTERY CABLE (-)
1............. 10314 ..................... BATTERY CABLE (+)
3............. 11418 ..................... FUEL CAP
3............. 11491 ..................... THROTTLE CABLE ASSY
6............. 11611 ..................... ROD END (FEMALE)
3............. 11638 ..................... SPEED CONTROL SPRING
5............. 11641 ..................... THROTTLE SPRING
3............. 11643 ..................... ROD END
3............. 11610 ..................... ROD ACTUATOR
10........... 11819 ..................... SCREW
6............. 1484 ....................... BUSHING BRONZE
3............. 3353 ....................... CAP FILLER/BREATHER
6............. 2737 ....................... KNOB ASSY (PITCH CONTROL)
2............. 11623 ..................... CABLE PITCH CONTROL
1............. 10511 ..................... SHAFT PITCH CONTROL(Left Side)
2............. 1617 ....................... LEVER ASSY
1............. 10510 ..................... SHAFT PITCH CONTROL(Right Side)
1............. 10722 ..................... SLIDE BLOCK (LEFT HAND)
1............. 10721 ..................... SLIDE BLOCK (RIGHT HAND)
1............. 10043 ..................... SPRAY PUMP
5............. 12009 ..................... SCREEN FILTER
2............. 19661 ..................... VALVE FUEL DRAIN
2............. 2108 ....................... CAP SPRAY TANK
2............. 2816 ....................... COVER SPRAY MOTOR
2............. 392292 ................... NOZZLE SPRAY
3............. 2896 .......................
2............. 12005 ..................... KILL SWITCH SEAT
3............. 12305 ..................... PLUG, INDICATOR LIGHT (RED)
3............. 11959 ................... PLUG, INDICATOR LIGHT (BLUE)
6............. 12307 ..................... BULB, INDICATOR LIGHTS
ENGINE PARTS FOR KUBOTA 38-KD
6............. 1627132092 ........... OIL FILTER
16........... 1624165510 ........... GLOW PLUG
3............. 1624197010 ........... FAN BELT
3............. 1574111080 ........... AIR FILTER
6............. 7000043081 ........... FUEL FILTER
1............. 10958 ..................... SWITCH IGNITION
3............. 12001 ..................... STARTER KEYS ( 2 per set)
LIGHT ASSY
NOTE: ............................ Part numbers on this Sug-
gested Spare Parts List may supercede/replace the P/N shown in the text pages of this book.
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 27
HTH — LEFT/RIGHT PIVOT ASSY
FRONT OF MOUNT AS SHOWN.
7
1
6
20
4
RIGHT SIDE PIVOT ASSEMBLY (VIEW FROM OPERATORS SEAT)
21
13
6
6
17
18
1
9
8
10
25
2
1
24
2
7
16
3
23
4
5
2
11
3
19
15
NOTES:
22
5
2
3
27
6
1
TORQUE TO 50 FT. LBS
2
TORQUE TO 60 FT. LBS
3
APPLY LOCTITE.
SEE PAGE 44 FOR HYDRAULIC
4
MOTOR HOSE CONNECTIONS.
5
PLACE FLUSH HEAD SCREW IN BACK OF MOUNT AS SHOWN.
6
PLACE HEX HEAD SCREW IN
PAGE 28 — HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11)
HTH — LEFT/RIGHT PIVOT ASSY
HTH-8 FT. RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #6 (02/22/11) — PAGE 29
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