THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
P/N 20210
PROPOSITION 65 WARNING
Engineexhaustandsomeof
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:
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 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
SILICOSIS/RESPIRATORY WARNINGS
WARNING
SILICOSIS WARNINGRESPIRATORY HAZARDS
Grinding/cutting/drilling of masonry, concrete, metaland
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, metaland
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 beingused.
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 3
Terms and Conditions of Sale — Parts ................. 162
PAGE 4 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
r
PARTS ORDERING PROCEDURES
Ordering parts has never been easier!
Choose from three easy options:
January 1
Effective:
st
, 2006
Best Deal!
Order via Internet
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
Order via Fax
All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)
Non-Dealer Customers:
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.
(Dealers Only)
to log in and save!
(Dealers Only)
:
Order via Phone:
If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.
com.
To obtain an MQ Account, contact you
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.*
Note: Discounts Are Subject To Change
:
Domestic (US) Dealers Call:
1-800-427-1244
Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*
Note: Discounts Are Subject To Change
International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.
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 ✓ Tr uck
■ Ground
■ Next Day
■ Second/Third Day
www.multiquip.com
WE ACCEPT ALL MAJOR CREDIT CARDS!
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 5
— PAGE RM
HTH44T— TRAINING CHECKLIST
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.
PAGE 6 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
DAILY PRE-OPERATION CHECKLIST
1.levellioenignE
2.levelliociluardyH
3.leveltnaloocrotaidaR
4.sedalbfonoitidnoC
5.noitarepohctipedalB
6.noitarepo)taes(hctiwslliK
7.noitarepolortnocgnireetS
COMMENTS:
HTH44T— DAILY PRE-OPERATION CHECKLIST
TSILKCEHCNOITAREPO-ERPYLIAD
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 7
— PAGE RM
HTH44T— SAFETY MESSAGE ALERT SYMBOLS
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
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.
HAZARD SYMBOLS
NOTE
This Owner's Manual has been developed to provide
complete instructions for the safe and efficient operation
of the MQ Whiteman HTH44T Ride-On Power Trowel.
For engine maintenance information, please refer to the
engine manufacturers instructions for data relative to its
safe operations.
Before using this Ride -On Power Trowel, ensure that
the operating individual has read and understands
all instructions in this manual.
SAFETY MESSAGE ALERT SYMBOLS
The three (3) 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 three words: DANGER,
WARNING, or CAUTION.
Lethal Exhaust Gases
Engine exhaust gases contain poisonous
carbon monoxide. This gas is colorless and
odorless, and can cause death if inhaled.
NEVER operate this equipment in a confined
area or enclosed structure that does not
provide ample free flow air.
Explosive Fuel
Gasoline is extremely flammable, and its
vapors can cause an explosion if ignited. DONOT start the engine near spilled fuel or
combustible fluids. DO NOT fill the fuel tank
while the engine is running or hot. 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
approved containers, in well-ventilated areas
and away from sparks and flames. NEVER
use fuel as a cleaning agent.
DANGER: You WILL be KILLED or
SERIOUSLY injured if you DO NOT follow
directions.
WARNING: You CAN be KILLED or
SERIOUSLY injured if you DO NOT follow
directions.
CAUTION: You CAN be injured if you
DO NOT follow directions.
Potential hazards associated with HTH44T Ride-on Power
Trowel operation will be referenced with Hazard Symbols which
appear throughout this manual, and will be referenced in
conjunction with Safety Message Alert Symbols.
Burn Hazards
Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operations. NEVER operate the engine with
heat shields or heat guards removed.
Rotating Parts
NEVER operate equipment with covers, or
guards removed. Keep fingers, hands, hair and
clothing away from all moving parts to prevent
injury.
PAGE 8 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— SAFETY MESSAGE ALERT SYMBOLS
Accidental Starting
ALWAYS place the ON/OFF switch in the
OFF position, and remove the key.
Over Speed Conditions
NEVER tamper with the factory settings of the
engine governor or settings. Personal injury
and damage to the engine or equipment can
result if operating in speed ranges above
maximum allowable.
NOTE
This Ride-On Power Trowel, other property,
or the surrounding environment could be
damaged if you do not follow instructions.
Respiratory Hazard
ALWAYS wear approved respiratory
protection.
Sight and Hearing hazard
ALWAYS wear approved eye and hearing
protection.
Equipment Damage Messages
Other important messages are provided throughout this manual
to help prevent damage to your trowel, other property, or the
surrounding environment.
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 9
— PAGE RM
HTH44T— RULES FOR SAFE OPERATION
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Failure to follow instructions in this manual may
lead to serious injury or even death! This
equipment is to be operated by
qualified personnel only! This equipment is
for industrial use only and should not be
regarded as a toy.
The following safety guidelines should always be used when
operating the HTH44T Ride-on Power Trowel:
GENERAL SAFETY
■
DO NOT operate or service this equipment before reading
this entire manual.
■
This equipment should not be operated by persons under
18 years of age.
■
DO NOT operate this equipment unless all guards and
safety devices are attached and in place.
■
ALWAYS use proper
equipment. This ride-on trowel is very heavy. It should be
lifted only with a lifting device (i.e. crane, forklift, etc.) with
a lifting capacity of at least one ton.
■
ALWAYS check to make sure that the operating area is
clear before starting the engine.
heavy
lifting techniques when moving
trained and
Emergencies
Maintenance Safety
■
Disconnect the battery and spark plug wires before
attempting any type of service.
■
Securely support any machine components that must be
raised.
■
NEVER lubricate components or attempt service on a
running machine.
■
ALWAYS allow the machine a proper amount of time to
cool before servicing.
■
Keep the machinery in proper running condition.
■
High Temperatures – Allow the machine
and engine to cool before adding fuel or
performing service and maintenance
hot
functions. Contact with
cause serious burns.
■
ALWAYS know the location of the
nearest
Know the location of the nearest telephone.
Also know the phone numbers of the
nearest
department
invaluable in the case of an emergency.
fire extinguisher
ambulance, doctor
. This information will be
components can
and
first aid kit
and
.
fire
■
ALWAYS test the safety
equipment.
■
NEVER place your feet inside the guard rings while starting
or operating this equipment.
■
NEVER operate this equipment without proper
clothing, shatterproof glasses, steel-toed boots and other
protective devices required by the job. Avoid wearing
jewelry or loose fitting clothing that may snag on the controls
or moving parts, this can cause a serious injury.
■
ALWAYS keep clear of rotating or moving parts while
operating this equipment.
■
NEVER leave the machine
■
ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
■
ALWAYS use extreme caution when working with
flammable liquids
allow it to cool
Fire or explosion could result from flames or sparks, or if
fuel is spilled on a hot engine.
■
Moving Parts – Shut down the engine before performing
service or maintenance functions. Contact with moving
parts can cause serious injury.
.
DO NOT smoke around or near the machine.
kill switch
unattended
. When refueling,
before operating the
stop the
protective
while running.
engine and
■
■
■
■
■
Make sure that there is no buildup of concrete, grease, oil
or debris on the machine.
Fix damage to the machine immediately and always replace
broken parts.
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.
PAGE 10 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— OPERATION AND SAFETY DECALS
Machine Safety Decals
The HTH44T series Ride-on Power Trowel is equipped with a number of safety decals. These decals are provided for operator
safety and maintenance information. Table 1 below illustrates these decals as they appear on the machine. Should any of these
decals become unreadable, replacements can be obtained from your dealer.
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 11
— PAGE RM
HTH44T— SPECIFICATIONS
Figure 1. HTH44T Dimension /Specifications
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)mc(.ni–htdiW–B)721(0.05
1
)mc(.ni–thgieH–C
gnitarepO).sgk(.sbl–thgieW)007(545,1
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2
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s/m(
)s/m(MPF–deepSpiTedalB)9.9(4291
.P.H–enignE44
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)mc(.ni–htdiWhtaP)332(29
4
liOciluardyH
enignEET-5051VleseiDatobuK
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 “
may vary depending upon the condition of the concrete.
Hearing protection is always recommended.
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
normal
” circumstances. Sound pressure
manner
most often experienced in “
Values were obtained from all three axes of motion. The
values shown represent the maximum RMS value from
these measurements.
4.“AW” stands for
viscosity
and is similar to 10W-30-motor oil. It is recommended
that AW MV 68 hydraulic oil be used. If this type of
hydraulic oil is not available then use 10W-30.
)241(0.65
ABT
ABT
86VMWA
normal
anti-wear
. The 68 refers to the general viscosity range
and “MV” stands for
” circumstances.
multi-
PAGE 12 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— GENERAL INFORMATION
HTH44TRIDE-ON TROWEL FAMILIARIZATION
The HTH44T series Ride-On Power Trowels are designed for
the floating and finishing of concrete slabs.
Take a walk around the HTH44T Ride-On Power Trowel. Take
notice of all the entire major components (see Figures 2 and
3, pages 14 and 15) 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 HTH44T Ride-On Power Trowel.
Before using your HTH44T 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 HTH44T Ride-On Power Trowel is available with a standard
V1505-TE 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.
Dual joystick controls located to the left and right of the operator
are provided for steering the HTH44T 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 Power Trowel to travel in either a
forward or reverse direction.
Hydraulic Pump
Delivers a continuous controlled flow of hydraulic fluid to the
hydraulic motors.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Moving the Ride-On Trowel
This Ride-on Power Trowel is very
and awkward to move around. Use proper
heavy lifting procedures and DO NOT
attempt to lift the Ride-on Power Trowel by
the guard rings
heavy
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
HTH44T is equipped with five blades per rotor equally spaced
in a radial pattern and attached to vertical rotating shaft by
means of a
Hydraulic Motor
Independent hydrostatic drive motors are coupled to the
engine-powered hydrostatic pumps. Each motor drives a spider
assembly.
Hydraulic Steering
spider assembly.
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 13
The HTH44T series Ride-on Power Trowel is designed to be
moved and handled several ways. The easiest way to lift the
.
ride-on 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 (Figure 3, Page 15).
A strap or chain can be attached to these lift loops, allowing a
forklift or crane to lift the Ride-on Power Trowel up onto a slab
of concrete. The strap or chain should have a minimum 2,000
pounds (1000-kg) lifting capacity and the lifting gear must be
capable of lifting at least this amount.
Training
For proper training, please use the “TRAINING CHECKLIST”
located in the front of this manual (Page 6). This checklist will
provide an outline for an experienced operator to provide
training to a new operator
— PAGE RM
HTH44T— CONTROLS AND INDICATORS
Figure 2. HTH44T Controls and Indicators (Front)
Figures 2 and 3 (pages 12 and 13) show the location of the
controls, indicators and general maintenance parts. The
function of each control, indicator or maintenance part is
explained 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.
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.
12.Retardant Spray Control Button – When pressed allows
retardant spray to flow through the spray nozzle located
at the front of the machine.
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
hydraulic 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.
PAGE 14 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— CONTROLS AND INDICATORS
Figure 3. HTH44T Controls and Indicators (Rear)
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.
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.
27.Oil Filter – Provides oil filtering for the engine.
28.Retardant Spray Motor – Used with thespray control
button.
NOTE
Read this entire instruction manual
Specification and part number
completely before attempting to operate this
are subject to change without
machine.
notice.
29. Retardant Spray Tank - Holds 5 gallons of retardant or
30. Battery - Provides +12V DC power to the electrical
31. Hydraulic Suction Filter - Filters hydraulic fluid prior to
32.Hydraulic Return Filter - Filters hydraulic returning to
33. Documentation Box - Contains information regarding
water.
system.
entering the system.
reservoir.
the trowel.
NOTE
The following section is intended as a basic guide
to the Ride-On Power 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 “
published by the American Concrete Institute,
Detroit Michigan.
Slabs on Grade
”
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 15
— PAGE RM
HTH44T— INITIAL START-UP
This section is intended to assist the operator with the initial
start-up of the HTH44T 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
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Failure to understand the operation of the
HTH44T series Ride-On Power Trowel could
result in severe damage to the trowel or
personal injury.
See Figures 2 and 3 (Pages 12 and 13) 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 diesel fuel. Handle fuel
safely. Motor fuels are highly flammable
and can be dangerous if mishandled. DONOT smoke while refueling. DO NOT attempt to refuel
the ride-on trowel if the engine is hot or running.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Starting the Engine
Figure 6. Fuel Gauge
NEVER store the Ride-On Power Trowel
with fuel in the tank for any extended period
of time. ALWAYS clean up spilled fuel
immediately.
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
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
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).
Figure 5. Hydraulic Oil Sight Glass
2.The Whiteman Ride-On Power Trowel is equipped with
a safety
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.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
DO NOT grab hold of the joysticks or pitch
tower assemblies to lift yourself onto the
trowel. Pulling on the joysticks or pitch
towers assemblies repeatedly will weaken
the units. Use any part of the frame to lift
yourself on the trowel.
kill switch
. This switch is located beneath the
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.
PAGE 16 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— INITIAL START-UP
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
5.Insert the
NEVER operate the
trowel in a confined area
or enclosed area structure
that does not provide
ample free flow of air.
ALWAYS wear approved eye and hearing
protection before operating the ride-on
power trowel.
6.Turn the ignition key clockwise to the (start) position. The
NEVER place hands or feet inside the guard
oil
rings while the engine is running. ALWAYS
shut the engine down before performing any
kind of maintenance service on the trowel.
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
OIL AND CHARGE INDICATOR LIGHTS
COME ON WHEN IGNITION SWITCH IS
IN THEPOSITION.
operator. Remember to turn the key to the “OFF” position
after stopping the machine. Not doing so may drain your
units’ battery
ignition key
into the ignition switch (Figure 8).
Figure 8. Ignition Switch and Key
and charge indicator lights (Figure 9) should be on.
OIL
WATER
CHARGE
P
R
E
H
E
A
T
ON FOR APPROXIMATELY 5-10 SECONDS
WHEN IGNITION SWITCH IS IN THE
PRE HEAT POSITION.
Figure 9. Oil and Charge Indicator Lights
4.Place the
engine throttle lever (
Figure 7) in the
LOW
position.
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. Two or three preheat
Figure 7. Engine Throttle Control Lever (Low)
cycles may be necessary in very cold
weather.
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 17
— PAGE RM
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.
HTH44T— INITIAL START-UP
8.Place the
engine throttle lever
(Figure 10) in the
HIGH
position.
Figure 10. Engine Throttle Control Lever (High)
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.
NOTE
All directional references with respect to
the joysticks are from the
operator’s
seat
position.
Steering
Two joysticks (Figures 11 and 12) located to the left and right of
the operator’s seat provide directional control for the HTH44T
Ride-On Power Trowel. Table 3 illustrates the various directional
positions of the joysticks and their effect on the ride-on trowel.
1.The foot pedal (Figure 13) 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.
Figure 12. Right Joystick
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Figure 13. Blade Speed Control Foot Pedal
PAGE 18 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— INITIAL START-UP
2.Push both the left and right joysticks forward (Figure 14).
Figure 14. 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.
5.Practice maneuvering the Ride-on Power 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
15) and repeat steps 3 through 6 while substituting the
word reverse for forward.
Figure 15. Joystick Control Reverse Direction
Engine Shut-Down
1.Return the speed control lever (Figure 7) to low idle, and
allow the engine to idle for 5 minutes .
2.Turn the ignition key counter-clockwise to the "
switch contact
3.Clean and remove any foreign debris from the trowel.
NOTE
Failure to allow the engine to idle for 5
minutes before shutting engine
OFF
may
lead to turbocharger damage.
starter
" position, then remove the key.
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 19
— PAGE RM
HTH44T— MAINTENANCE
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 7) there is a “Daily Pre-Operation
Checklist”. Make copies of this checklist and use it on a daily
basis.
CAUTION!CAUTION!
CAUTION!
CAUTION!CAUTION!
MAINTENANCE SCHEDULE
Change
of use, then change every 250 hours.
the
Disconnect spark plug
wires and battery cables
before attempting any
service or maintenance on
the Ride-on Power Trowel.
ALWAYS allow the engine to cool before
servicing. NEVER attempt any maintenance
work on a hot! (muffler, radiator, etc.) trowel.
hydraulic oil
and
filter
after the first 100 hours
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 16) at the front of the foot pedal.
Lengthening the spacing increases the blade speed;
shortening the spacing decreases the blade speed.
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
Change
the first 100 hours of use, then change
every 250 hours.
the
hydraulic oil
and
filter
after
Figure 16. 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 17,
Page 21). 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 turbocharged
engine should be set at 155-160 rpm with the engine at full
speed.
PAGE 20 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— MAINTENANCE
Figure 17. Pump Actuation 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 18) 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.
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 18. Blade Pitch Adjustment Bolt
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 21
— PAGE RM
HTH44T— MAINTENANCE
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.
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 counterrotate. 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.
PAGE 22 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— MAINTENANCE
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 19) with a range of at least 5,000 psi. Two male
diagnostic quick couplers (one for each pump) are located in
the elbow fittings (Figure 19) at the front of the pump. 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.
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.
Figure 19. Pressure Gauge (Hydraulic Pump)
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 23
— PAGE RM
Checking Steering Pressure
Lift the hinged radiator access cover and insert the test
pressure gauge (300 to 600 PSI) as shown in Figure 20 into
the left steering valve's diagnostic quick coupler.
Run the engine at full RPM. The left steering valve's factory
setting is 145 PSI, however some operators may prefer a more
responsive steering (higher pressure required) and some
operators may prefer a "softer feel" (lower pressure required).
HTH44T— MAINTENANCE
Figure 20. Pressure Gauge (Left Steering Valve)
PAGE 24 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— MAINTENANCE
Steering Pressure Adjustment
On the steering pressure relief valve use an open-end wrench
to loosen the jam nut and an allen-wrench to adjust the
steering pressure to the desired setting somewhere between
115 and 180 PSI. Retighten the jam nut.
The steering pressure should be checked with the engine at
full RPM. It is not necessary to move either steering control
during the pressure test.
Figure 21. Steering Pressure Adjustment
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 25
HTH44T • RIDE-ON POWER TROWEL — OPERATION & PARTS MANUAL — REV. #8 (03/27/12) — PAGE 27
— PAGE RM
HTH44T— EXPLANATION OF CODE IN REMARKS COLUMN
The following section explains the different symbols and
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.
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.
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.
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.
QTY. Column
Numbers Used — Item quantity can be indicated by a
number, a blank entry, or A/R.
A/R (As Required) is generally used for hoses or other
parts that are sold in bulk and cut to length.
A blank entry generally indicates that the item is not sold
separately. Other entries will be clarified in the “Remarks”
Column.
REMARKS Column
Some of the most common notes found in the “Remarks”
Column are listed below. Other additional notes needed
to describe the item can also be shown.
Assembly/Kit — All items on the parts list with the
same unique symbol will be included when this item is
purchased.
Indicated by:
“INCLUDES ITEMS W/(unique symbol)”
Serial Number Break — Used to list an effective serial
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 — Indicates that the part
is used only with the specific model number or model
number variant listed. It can also be used to show a
part is NOT used on a specific model or model number
variant.
Indicated by:
“XXXXX ONLY”
“NOT USED ON XXXX”
“Make/Obtain Locally” — Indicates that the part can
be purchased at any hardware shop or made out of
available items. Examples include battery cables, shims,
and certain washers and nuts.
“Not Sold Separately” — 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
for sale through Multiquip.
PAGE 28 — HTH44T • RIDE-ON POWER TROWEL — OPERATION AND PARTS MANUAL — REV. #8 (03/27/12)
)
HTH44T— SUGGESTED SPARE PARTS & SERVICE ITEMS
HTH44T SERIES - KUBOTA 44 HP TURBO ENGINE
1 Unit
Qty.P/NDescription
5 ............ 2829 ................ ARMS
2 ............ 9005 ................ LEVER TROWEL ARM (L.S.)
20 .......... 0166A .............. WASHER
20 .......... 1876 ................ JAM NUT
20 .......... 0164B .............. SCREW
5 ............ 11039 ............... BUSHING
2 ............ 9111 ................. SPRING (L.S.)
20 .......... 1875 ................ WASHER
20 .......... 1322 ................ SCREW ASM, ARM RETAINING