MHP3
DIESEL
TRACHORSE
USER MANUAL
Safety, Operation and Maintenance
© 2014 Stanley Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
69887 10/2014 Ver. 5
WARNING
TABLE OF CONTENTS
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS .......................................................................................................................................... 5
TOOL STICKERS & TAGS ........................................................................................................................................7
HOSE TYPES ............................................................................................................................................................ 8
HOSE RECOMMENDATIONS ..................................................................................................................................9
HTMA REQUIREMENTS .........................................................................................................................................10
HOSE & FITTING CONNECTIONS FOR SINGLE TOOL CIRCUIT ....................................................................... 11
HOSE & FITTING CONNECTIONS FOR DUAL TOOL CIRCUIT ...........................................................................12
OPERATION ............................................................................................................................................................13
MAINTENANCE ......................................................................................................................................................19
TESTING & TROUBLESHOOTING ........................................................................................................................20
TROUBLESHOOTING ............................................................................................................................................21
SPECIFICATIONS ................................................................................................................................................... 22
ACCESSORIES.......................................................................................................................................................22
MHP3 DIESEL MAJOR ASSY PARTS ILLUSTRATION .......................................................................................... 23
MHP3 DIESEL MAJOR ASSY PARTS LIST ............................................................................................................24
MHP3 DIESEL HOSE & FITTINGS ILLUSTRATION – A ........................................................................................25
MHP3 DIESEL HOSE & FITTINGS PARTS LIST – A .............................................................................................. 26
MHP3 DIESEL HOSE & FITTINGS ILLUSTRATION & PARTS – B ........................................................................27
MHP3 DIESEL POWER UNIT FRAME ILLUSTRATION ......................................................................................... 28
MHP3 DIESEL POWER UNIT FRAME PARTS LIST ..............................................................................................29
MHP3 DIESEL POWER UNIT ENGINE ILLUSTRATION & PARTS ....................................................................... 30
MHP3 DIESEL POWER UNIT RESERVOIR ILLUSTRATION & PARTS ...............................................................31
MHP3 DIESEL POWER UNIT VALVE ILLUSTRATION & PARTS ..........................................................................32
IMPORTANT
To ll out a Product Warranty Validation form, and for information on your warranty,
visit Stanleyhydraulics.com and select the Company tab, Warranty.
(NOTE: The warranty Validation record must be submitted to validate the warranty).
SERVICING: This manual contains safety, operation, and routine maintenance instructions. Stanley Hydraulic
Tools recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an au-
thorized and certied dealer. Please read the following warning.
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR
SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN
AUTHORIZED AND CERTIFIED DEALER.
For the nearest authorized and certied dealer, call Stanley Hydraulic Tools at the number listed on the back of this
manual and ask for a Customer Service Representative.
MHP3 Diesel User Manual ◄ 3
DANGER
WARNING
CAUTION
CAUTION
NOTICE
IMPORTANT
SAFETY SYMBOLS
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair actions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
This safety alert and signal word indicate an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, may result in property damage.
This signal word indicates a situation which, if not avoided, will result in damage
to the equipment.
This signal word indicates a situation which, if not avoided, may result in damage to the equipment.
Always observe safety symbols. They are included for your safety and for the protection of the tool.
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and maintenance personnel.
4 ► MHP3 Diesel User Manual
SAFETY PRECAUTIONS
Tool operators and maintenance personnel must always
comply with the safety precautions given in this manual
and on the stickers and tags attached to the machine.
These safety precautions are given for your safety. Review them carefully before operating the machine and
before performing general maintenance or routine service.
Supervising personnel should develop additional pre-
cautions relating to the specic work area and local
safety regulations. If so, place the added precautions in
the space provided in this manual.
If you have not read this manual or the engine manual, you are not ready to operate the MHP3. Read and
understand this manual and any stickers and tags
attached to the machine before operation. Failure to
do so can result in equipment damage, personal injury, or death.
• Operate the machine in a work area WITHOUT BYSTANDERS. The operator must be familiar with all
prohibited work areas such as excessive slopes and
dangerous terrain conditions.
• DO NOT operate the machine ACROSS excessive
slopes or unstable terrain where “tip over” is a hazard.
• DO NOT operate the machine in conned areas
where there may be a risk of crushing the operator
between the machine and another object.
• DO NOT OPERATE THE TRACHORSE IN ENCLOSED SPACES. Inhalation of engine exhaust
can be fatal.
• DO NOT WEAR LOOSE CLOTHING that can get
entangled in the working parts of the machine or hydraulic tools.
• DO NOT add fuel to the machine while it is running
or still hot.
• DO NOT operate the machine if a fuel odor is present.
• DO NOT operate the machine within 3.3 ft./1 m of
buildings, obstructions, or ammable objects.
• Allow the engine to cool before storing the machine
in an enclosure.
• DO NOT RIDE ON, OR ALLOW ANYONE ELSE TO
RIDE ON, THE MACHINE AT ANY TIME.
• Establish a training program for all operators to ensure safe operation.
• DO NOT operate the machine unless thoroughly
trained or under the supervision of an instructor.
• Always wear safety equipment such as goggles,
ear, head protection, respiratory and safety shoes
at all times when operating the TracHorse and hydraulic tools.
• DO NOT inspect or clean the machine while the engine is running. Accidental engagement of the machine can cause serious injury or death.
• Wear a homologated respirator when cutting or
breaking masonry, concrete, asbestos and other
materials that produce dust.
• The hydraulic circuit control levers must be in the
“OFF”position when coupling or uncoupling hydrau-
lic tools. Wipe all couplers clean before connecting.
Use only lint-free cloths. Failure to do so may result
in damage to the quick couplers and cause overheating of the hydraulic system.
• Before operating hydraulic tools, read and understand the operation manual furnished with the tool.
• DO NOT operate a damaged, or improperly adjusted,
machine. DO NOT operate with guards removed.
• DO NOT weld or cut with an acetylene torch any
surface or component of the equipment. Consult
with the Stanley factory before performing any welding or acetylene cutting of the equipment.
• Prevent possible personal injury or equipment damage by having all repair, maintenance and service
performed only by authorized and properly trained
personnel.
• DO NOT exceed the rated limits of the equipment
or use the equipment for applications beyond its design capacity.
• Always keep critical markings, such as labels and
warning stickers legible.
• Always replace parts with replacement parts recommended by Stanley Hydraulic Tools.
• Keep all body parts away from working parts of the
TracHorse.
• Be aware of surrounding hazards. Noise created by
the TracHorse and the tools it operates may mask
early indications of approaching hazards.
MHP3 Diesel User Manual ◄ 5
SAFETY PRECAUTIONS
• Only use the TracHorse in well-ventilated areas. DO
NOT operate in explosive atmospheres, in closed
environments or near ammable substances.
• Always be well-rested and mentally alert when op-
erating the TracHorse and tools. DO NOT operate if
affected by medications, drugs or alcohol.
• Keep clear of hot (engine) parts and exhaust.
• DO NOT use ammable solvents around the engine.
• DO NOT reverse tool rotation by changing uid ow
direction.
• Always use hose and ttings rated for 2500 psi/172
bar with a 4 to 1 safety factor. Be sure all hose connections are tight.
• Be sure all hoses are correct for current ow direction to and from the tool being used.
• DO NOT inspect hoses and ttings for leaks by using bare hands. “Pin-hole” leaks can penetrate the
skin.
• DO NOT operate tools if oil temperature exceeds
140 °F/60 °C. Operation at high temperatures can
cause higher than normal temperatures at the tools
which can result in operator discomfort.
• Disconnect battery before servicing electrical components. Electrocution or burns could result from
improper contact.
6 ► MHP3 Diesel User Manual
TOOL STICKERS & TAGS
Refer to the parts illustrations for correct location of stickers.
Usein well ventilatedareas only. Exhaust contains chemicals known to the
state of California to cause cancer,birth defects, and other reproductive
harm.
Contact with high pressure fluid at leak or burst resulting from
improper handling, operation, or maintenance will causeoil injection
to body.
Engine,exhaust, and other surfaces of tool may be hot.Avoid accidental
contact with hot surfaces.Allowtool to cool before maintenance or
storage.
All operators mustread, understand, and followALL safteyprecautions
and operatinginstructions found in owners manual before operatingtool.
59126
35677
Start Sticker
Dash Decal
68335
Throttle Sticker
Hot Parts Sticker
P/N-28047
68334
Limit Engine Speed Sticker
HYDRAU-
LIC FLUID
35686
Hydraulic Fluid Sticker
28046
Carbon Monoxide Sticker
51297
Fluid Level Sticker
29133
California Proposition Sticker
28045
Combiner Knob Sticker
47352
Lift Point Sticker
MHP3 Diesel User Manual ◄ 7
HOSE TYPES
The rated working pressure of the hydraulic hose must be equal to or higher than the relief valve setting on the hydraulic system. There are three types of hydraulic hose that meet this requirement and are authorized for use with
Stanley Hydraulic Tools. They are:
Certied non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic ber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certied non-
conductive is the only hose authorized for use near electrical conductors.
Wire-braided (conductive) — constructed of synthetic rubber inner tube, single or double wire braid reinforcement, and weather resistant synthetic rubber cover. This hose is conductive and must never be used near
electrical conductors.
Fabric-braided (not certied or labeled non-conductive) — constructed of thermoplastic or synthetic rubber inner tube, synthetic ber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. This
hose is not certied non-conductive and must never be used near electrical conductors.
HOSE SAFETY TAGS
To help ensure your safety, the following DANGER tags are attached to all hose purchased from Stanley Hydraulic
Tools. DO NOT REMOVE THESE TAGS.
If the information on a tag is illegible because of wear or damage, replace the tag immediately. A new tag may be
obtained from your Stanley Distributor.
THE TAG SHOWN BELOW IS ATTACHED TO “CERTIFIED NON-CONDUCTIVE” HOSE
DANGER
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
WHEN USING HYDRAULIC TOOLS ON OR NEAR ELECTRIC LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
2. BEFORE USING HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
ON OR NEAR ELECTRIC LINES. WIPE THE ENTIRE LENGTH OF THE HOSE AND FITTING WITH A CLEAN DRY ABSORBENT CLOTH TO REMOVE DIRT AND MOISTURE AND
TEST HOSE FOR MAXIMUM ALLOWABLE CURRENT LEAKAGE IN ACCORDANCE WITH
SAFETY DEPARTMENT INSTRUCTIONS.
DO NOT REMOVE THIS TAG
SEE OTHER SIDE
SIDE 1
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE
OR HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE.
KEEP HOSE AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT
CONTACT DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION
AND SEVERE PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, ABRASION, CUTTING, OR
CONTACT WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT
USE HOSE TO PULL OR LIFT TOOLS, POWER UNITS, ETC.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAM-
AGE TO COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE
IMMEDIATELY. NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
(Shown smaller than actual size)
DANGER
DANGER
SEE OTHER SIDE
SIDE 2
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
DANGER
DANGER
1. DO NOT USE THIS HYDRAULIC HOSE ON OR NEAR ELECTRIC LINES. THIS HOSE IS
NOT LABELED OR CERTIFIED AS NON-CONDUCTIVE. USING THIS HOSE ON OR NEAR
ELECTRICAL LINES MAY RESULT IN DEATH OR SERIOUS INJURY.
2. FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND ELEC-
TRIC LINES.
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE OR
HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE. KEEP HOSE
AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT CONTACT
DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION AND SEVERE
PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, CUTTING, OR CONTACT
WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT USE HOSE TO
PULL OR LIFT TOOLS, POWER UNITS, ETC.
DO NOT REMOVE THIS TAG
SEE OTHER SIDE
SIDE 1
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAMAGE TO
COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE IMMEDIATELY.
NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
(Shown smaller than actual size)
DANGER
SEE OTHER SIDE
SIDE 2
DO NOT REMOVE THIS TAG
DO NOT REMOVE THIS TAG
8 ► MHP3 Diesel User Manual
Min. Working Pressure
USE
(Press/Return)
HOSE RECOMMENDATIONS
Certied Non-Conductive Hose - Fiber Braid - for Utility Bucket Trucks
Oil Flow Hose Lengths Inside Diameter
GPM LPM FEET METERS INCH MM PSI BAR
4-9 15-34 up to 10 up to 3 3/8 10 Both 2250 155
Conductive Hose - Wire Braid or Fiber Braid -DO NOT USE NEAR ELECTRICAL CONDUCTORS
4-6 15-23 up to 25 up to 7.5 3/8 10 Both 2500 175
4-6 15-23 26-100 7.5-30 1/2 13 Both 2500 175
5-10.5 19-40 up to 50 up to 15 1/2 13 Both 2500 175
5-10.5 19-40 51-100 15-30 5/8 16 Both 2500 175
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
5-10.5 19-40 100-300 30-90
10-13 38-49 up to 50 up to 15 5/8 16 Both 2500 175
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 51-100 15-30
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
10-13 38-49 100-200 30-60
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
13-16 49-60 up to 25 up to 8
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
13-16 49-60 26-100 8-30
PRESSURE
<<< FLOW
RETURN
FLOW >>>
Figure 1. Typical Hose Connections
Tool to Hydraulic Circuit Hose
Recommendations
The chart to the right shows recommended
minimum hose diameters for various hose
lengths based on gallons per minute (gpm)/
liters per minute (lpm). These recommenda-
tions are intended to keep return line pressure
(back pressure) to a minimum acceptable lev-
el to ensure maximum tool performance.
This chart is intended to be used for hydraulic
tool applications only based on Stanley Hy-
draulic Tools tool operating requirements and
should not be used for any other applications.
All hydraulic hose must have at least a rated
minimum working pressure equal to the maxi-
mum hydraulic system relief valve setting.
All hydraulic hose must meet or exceed
specications as set forth by SAE J517.
MHP3 Diesel User Manual ◄ 9
HTMA / EHTMA REQUIREMENTS
HTMA / EHTMA REQUIREMENTS
HTMA
HYDRAULIC SYSTEM REQUIREMENTS
Flow Range
Nominal Operating Pressure
(at the power supply outlet)
System relief valve setting
(at the power supply outlet)
Maximum back pressure
(at tool end of the return hose)
Measured at a max. uid viscosity of:
(at min. operating temperature)
Temperature: Sufcient heat rejection
capacity to limit max. uid temperature to:
(at max. expected ambient temperature)
Min. cooling capacity at a temperature
difference of between ambient and uid
temps
NOTE:
Do not operate the tool at oil temperatures above 140° F (60° C). Operation at higher temperatures can cause operator
discomfort at the tool.
Filter
Min. full-ow ltration
Sized for ow of at least:
(For cold temp. startup and max.
dirt-holding capacity)
4-6 gpm 7-9 gpm 9-10.5 gpm 11-13 gpm
(15-23 lpm) (26-34 lpm) (34-40 lpm) (42-49 lpm)
1500 psi 1500 psi 1500 psi 1500 psi
(103 bar) (103 bar) (103 bar) (103 bar)
2100-2250 psi 2100-2250 psi 2200-2300 psi 2100-2250 psi
(145-155 bar) (145-155 bar) (152-159 bar) (145-155 bar)
250 psi 250 psi 250 psi 250 psi
(17 bar) (17 bar) (17 bar) (17 bar)
400 ssu* 400 ssu* 400 ssu* 400 ssu*
(82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
140° F 140° F 140° F 140° F
(60° C) (60° C) (60° C) (60° C)
3 hp 5 hp 6 hp 7 hp
(2.24 kW) (3.73 kW) (5.22 kW) (4.47 kW)
40° F 40° F 40° F 40° F
(22° C) (22° C) (22° C) (22° C)
25 microns 25 microns 25 microns 25 microns
30 gpm 30 gpm 30 gpm 30 gpm
(114 lpm) (114 lpm) (114 lpm) (114 lpm)
TYPE I TYPE II
TOOL TYPE
TYPE RR
TYPE III
Hydraulic uid Petroleum based
(premium grade, anti-wear, non-conductive)
Viscosity (at min. and max. operating temps)
NOTE:
When choosing hydraulic uid, the expected oil temperature extremes that will be experienced in service determine the
most suitable temperature viscosity characteristics. Hydraulic uids with a viscosity index over 140 will meet the requirements
over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
EHTMA
100-400 ssu* 100-400 ssu* 100-400 ssu* 100-400 ssu*
(20-82 centistokes)
CLASSIFICATION
HYDRAULIC SYSTEM
REQUIREMENTS
Flow Range
Nominal Operating Pressure
(at the power supply outlet)
System relief valve setting
(at the power supply outlet)
NOTE: These are general hydraulic system requirements. See tool specication page for tool specic requirements
B
3.5-4.3 gpm 4.7-5.8 gpm 7.1-8.7 gpm 9.5-11.6 gpm 11.8-14.5 gpm
(13.5-16.5 lpm) (18-22 lpm) (27-33 lpm) (36-44 lpm) (45-55 lpm)
1870 psi 1500 psi 1500 psi 1500 psi 1500 psi
(129 bar) (103 bar) (103 bar) (103 bar) (103 bar)
2495 psi 2000 psi 2000 psi 2000 psi 2000 psi
(172 bar) (138 bar) (138 bar) (138 bar) (138 bar)
C
D
10 ► MHP3 Diesel User Manual
CAUTION
HOSE FITTINGS & CONNECTIONS
HOSE & FITTING CONNECTIONS FOR SINGLE TOOL
CIRCUIT
HTMA 3/8 INCH MALE QUICK DISCONNECT COUPLER
(STANLEY P/N 03973 COUPLER NOSE or STANLEY P/N
03971 COUPLER SET – nose & body)
HTMA 3/8 INCH FEMALE QUICK DISCONNECT
COUPLER (STANLEY P/N 03972 COUPLER BODY or
STANLEY P/N 03971 COUPLER SET – nose & body)
1/2 INCH I.D. HOSE, 25 FT TO 50 FT LONG.
(FOR 25 FEET, STANLEY P/N 31972 HYDRAULIC HOSE
or STANLEY P/N 58633 TWINNED HYDRAULIC HOSES
or 58451 2-wire braid HYDRAULIC HOSE)
(FOR 50 FEET, STANLEY P/N 31848 HYDRAULIC HOSE
or STANLEY P/N 58634 TWINNED HYDRAULIC HOSES
or 58448 2-wire braid HYDRAULIC HOSE)
Before disconnecting hydraulic tools, ensure the tool
circuit control levers are in the down position and the
throttle is in the "SLOW" position.
1/2 INCH MALE PIPE HOSE END
HTMA 1/2 INCH MALE QUICK DISCONNECT COUPLER
(STANLEY P/N 03975 COUPLER NOSE or STANLEY P/N
03974 COUPLER SET – nose & body)
HTMA 1/2 INCH FEMALE QUICK DISCONNECT
COUPLER (STANLEY P/N 03976 COUPLER BODY or
STANLEY P/N 03974 COUPLER SET – nose & body)
MHP3 Diesel User Manual ◄ 11
CAUTION
HOSE FITTINGS & CONNECTIONS
HOSE & FITTING CONNECTIONS FOR DUAL TOOL
CIRCUIT
HTMA 3/8 INCH MALE QUICK DISCONNECT
COUPLER (STANLEY P/N 03973 COUPLER NOSE or
STANLEY P/N 03971 COUPLER SET – nose & body)
HTMA 3/8 INCH FEMALE QUICK DISCONNECT
COUPLER (STANLEY P/N 03972 COUPLER BODY or
STANLEY P/N 03971 COUPLER SET – nose & body)
1/2 INCH I.D. HOSE, 25 FT TO 50 FT LONG.
(FOR 25 FEET, STANLEY P/N 31972 HYDRAULIC
HOSE or STANLEY P/N 58633 TWINNED HYDRAULIC
HOSES or 58451 2-wire braid HYDRAULIC HOSE)
(FOR 50 FEET, STANLEY P/N 31848 HYDRAULIC
HOSE or STANLEY P/N 58634 TWINNED HYDRAULIC
HOSES or 58448 2-wire braid HYDRAULIC HOSE)
Before disconnecting hydraulic tools, ensure the tool
circuit control levers are in the down position and the
throttle is in the "SLOW" position.
1/2 INCH MALE PIPE HOSE END
HTMA 1/2 INCH MALE QUICK DISCONNECT COU-
PLER (STANLEY P/N 03975 COUPLER NOSE or
STANLEY P/N 03974 COUPLER SET – nose & body)
HTMA 1/2 INCH FEMALE QUICK DISCONNECT COU-
PLER (STANLEY P/N 03976 COUPLER BODY or
STANLEY P/N 03974 COUPLER SET – nose & body)
12 ► MHP3 Diesel User Manual
NOTICE
NOTICE
NOTICE
OPERATION
PREPARATION FOR USE
ENGINE
Do not operate the TracHorse until you have read
the engine operating and maintenance instructions
manual furnished in addition to this manual.
1.
Engine Crankcase Oil Level
Always check the oil level before starting the engine.
Make sure the oil level is at the FULL MARK on the
dipstick. Do not overll. Use oil as specied in the
engine operating and maintenance manual.
The engine oil sump must never be overlled.
Overlling can cause the engine to overheat and
cause crankshaft seal damage.
2.
Engine Fuel Level
Check the fuel level. If low, ll with DF-1 or DF-2
diesel fuel (A.S.T.M. D975-66T No. 1 or no. 2 dark).
RECOMMENDED HYDRAULIC OILS
Below is a list of recommended oils by brand.
Brand Biodegradable Description
CITGO No Hydurance AW32
AMS Oil No HVH 32
Exxon Mobil No Univis HVI26*
Exxon Mobil No DTE 10 Excel
Shell No S2 V 32
Chevron No Rando HDZ 32
Conoco Phillips No Unax AW-WR-32
Clarion (CITGO) Yes Green Bio 32
Exxon Mobil Yes EAL 224H
Chevron Yes Clarity AW32
Terresolve Yes Envirologic 132
Shell Yes Naturelle HF-E-32
*Recommended for extreme cold temperatures
BATTERY
The supplied battery is maintenance free.
NOTE:
Before starting the engine make sure the tool circuit
switch is in the OFF position.
Shut the engine off before attempting to add fuel to
the fuel tank. Do not remove the fuel cap while the
engine is running. Do not add fuel to the tank while
the engine is hot. Do not ll the fuel tank to a point of
overowing.
HYDRAULIC FLUID
Check the sight gauge in the hydraulic uid reservoir for
the proper uid level.
DUAL CIRCUIT OPERATION
Facing the panel, the male quick disconnect ttings are
the PRESSURE FLUID OUT tting. The female quick
disconnect ttings are the RETURN FLUID IN (RE-
TURN) tting.
The “Dual Circuit” control panel contains connections for
two 5 GPM tool circuits. In addition, the two circuits may
be combined into one 10 GPM tool circuit.
1. If using one 5 GPM tool circuit, select either circuit
and connect the PRESSURE FLUID OUT hose to
the male coupler and connect the RETURN FLUID
IN (RETURN) to the female coupler near to it. Connect the other ends of the hoses to the tool.
If using both 5 GPM tool circuits, connect PRESSURE FLUID OUT hoses to the male couplers and
connect the RETURN FLUID IN (RETURN) hoses
to the female couplers. Connect the other ends of
the hoses to the tools.
2. Ensure the throttle control is depressed fully to the
idle position.
MHP3 Diesel User Manual ◄ 13
NOTICE
OPERATION
3. Ensure the tool circuit levers are in the OFF position.
4. If starting the engine in cold weather conditions turn
the start switch until the battery charge light comes
on. Then press and hold the glow plug button for 1015 seconds. Release the glow plug button and turn
the start switch to the third start position to crank the
engine.
5. Turn the start switch clockwise to begin cranking the
engine. Use short starting cycles (15 seconds per
minute) to prolong starter life. Extended cranking
can damage the starter motor.
6. After the engine starts, allow it to warm-up.
NOTE:
Hydraulic uids are thicker in cold weather. It is recommended that the engine be operated at low idle
long enough to allow the uid temperature to warm
to a minimum of 50 °F.
7. When the engine is warmed up the throttle may be
advanced and the hydraulic tool circuits may be
used.
INSTRUMENTS
BATTERY CHARGE LIGHT
A problem with the charging circuit exists if the battery
charge light remains on after the engine has started.
OIL PRESSURE LIGHT
A problem with the engine oil lubricating system exists
if the oil pressure light remains on after the engine has
started. Shutdown the engine and then have the lubri-
cating system serviced by a qualied technician.
Dash Panel Warning Lights
If the engine runs out of fuel or dies during operation
or if the stop knob is pulled and the ignition switch
is left in the ON position, the battery may become
discharged. Make sure the start switch is returned to
the OFF position.
COLD WEATHER STARTUP
1. Use the procedures described under “Starting The
Engine” and then follow the procedures below.
2. Hydraulic uids are thicker in cold weather, therefore, it is recommended that the engine be run at
low idle long enough to bring the uid temperature
up to a minimum of 50 °F/10 °C or until the top of the
hydraulic lter feels warm.
3. If the tools and tool hoses are cold, it is recommend-
ed to allow hydraulic uid to circulate through the
tool hoses until warm before using the tools.
ENGINE SHUTDOWN
Place both control levers in the OFF position. Push the
throttle control completely in. Allow the engine to idle for
approximately one minute, turn the switch to OFF, and
then pull the stop knob to shutdown the unit. Make sure
the start switch is in the off position.
HYDRAULIC TOOL CIRCUIT CONTROLS
The MHP3 TracHorse provides two circuits, each with
an oil ow of 5 gpm/19 lpm up to 2000 psi/140 bar. Or
the two circuits may be combined into one circuit provid-
14 ► MHP3 Diesel User Manual
OPERATION
ing 10 gpm/38 lpm up to 2000 psi/140 bar.
The MHP3 TracHorse contains a hydraulic pump with
two sections. Each pump section will provide 5 gpm/19
lpm at the maximum, governed engine throttle. The output (5 gpm/19 lpm) of each pump section is directed to
the panel control valve assembly. It is the position of
the hydraulic circuit combiner knob on the panel control
valve assembly which keeps the output of each pump
section separated or combined.
When the hydraulic circuit combiner knob is pulled out,
the two circuits are combined into one 10 gpm/38 lpm
circuit. One hydraulic tool may be connected to one circuit. The other circuit must not have a tool connected to
it or have the hoses connected. The circuit is activated
by pushing both control levers up.
When the hydraulic circuit combiner knob is pushed in,
the two circuits are not combined and each circuit provides 5 gpm/19 lpm. One hydraulic tool may be connected to each circuit. Each circuit is activated by pushing
the circuit lever up.
Oil ow is regulated by pulling the throttle control to the
full throttle position. This setting will produce 10 gpm/38
lpm up to 2000 psi/140 bar.
VARIOUS TYPES OF WORK
WARNING
When rst learning to operate the Track Horse,
position the throttle to the “SLOW” position. More
experienced operators may use higher throttle
settings.
FORWARD TRAVEL
• The throttle can be positioned anywhere between
slow and fast for traveling forward depending on the
weight of the load being carried. Heavy loads will
require higher throttle settings and low range in order for the engine to provide enough power to move
the load.
• A switch mounted on the control provides two-speed
(FAST & SLOW) operation.
Male Quick Disconnect Couplers
Combiner Knob
Hour Meter
Control Lever
(shown in OFF
position)
Female Quick Disconnect Couplers
ADJUSTING THROTTLE FOR
REVERSE TRAVEL
WARNING
DO NOT attempt to travel in reverse with the throttle
positioned above “SLOW”. This may result in loss of
control and result in injury or death to the operator.
•
Always position the throttle to a slow position for reverse travel to permit increased control and safety.
MHP3 Diesel User Manual ◄ 15
OPERATION
• Always switch the two-speed control to “LOW”
speed operation when moving in reverse.
SLOPE OPERATION
• DO NOT operate the machine on slopes exceeding 60 percent (30°) in the travel direction or across
slopes exceeding 45 percent (24°).
• Depending on the load carried in the bed, it may be
preferable to back up steep slopes.
• If traversing over large obstructions such as railroad
rail or curbs, travel at an angle (45 degrees) to the
obstruction. In some cases it may be easier to back
over them.
• Avoid turning on slopes. If you must turn, turn slowly
downhill, if possible.
• DO NOT operate the machine near drop-offs, ditches, or embankments. The machine could suddenly
turn over if a track goes over the edge or if an edge
collapses.
• DO NOT try to stabilize the machine if it is tipping
over. Let go of the machine and get out of its way.
TRAVELING FORWARD OR REVERSE
the right track control. Resume pushing forward on
the left track control to move forward in a straight
line.
• TO TURN RIGHT WHILE MOVING FORWARD:
Release the right track control while pushing forward on the left track control. Resume pushing forward on the right track control to move forward in a
straight line.
Track Steering Controls
To travel forward, reverse, turn left, or turn right, do the
following:
FORWARD TRAVEL
• TO MOVE FORWARD IN A STRAIGHT LINE: Move
both the left and right track controls forward at the
same time.
• TO TURN LEFT WHILE MOVING FORWARD: Re-
lease the left track control while pushing forward on
TO TRAVEL FORWARD
Move Both Controls
Forward
TO TURN LEFT WHILE
MOVING FORWARD
Release left control while
holding right control
forward
16 ► MHP3 Diesel User Manual
OPERATION
TO TURN RIGHT WHILE
MOVING FORWARD
Release right control
while holding left control
forward
REVERSE TRAVEL
WARNING
DO NOT attempt to travel in reverse with the throttle
positioned above “SLOW”. This may result in loss of
control and result in injury or death to the operator.
•
TO MOVE BACKWARDS IN A STRAIGHT LINE:
Move both the left and right track controls backward
at the same time.
• TO TURN LEFT WHILE MOVING BACKWARD:
Release the left track control while pulling backward
on the right track control. Resume pulling backward on the left track control to move backward in a
straight line.
TO TURN LEFT WHILE
MOVING BACKWARD
Release left control while
holding right control
backward
•
TO TURN RIGHT WHILE MOVING BACKWARD:
Release the right track control while pulling backward on the left track control. Resume pulling backward on the right track control to move backward in
a straight line.
TURNING FROM A STOP
• TO TURN LEFT FROM A STOP: Moving the right
track control forward and moving the left track control backward at the same time will increase the
TO TURN RIGHT WHILE
MOVING BACKWARD
Release right control
while holding left control
backward
TO TRAVEL
BACKWARD
Move Both Controls
Backward
turning rate.
MHP3 Diesel User Manual ◄ 17
OPERATION
TO TURN LEFT
FROM A STOP
Move the right control
forward and the left
control backward
Loading and unloading of any type of machine is
dangerous. Never attempt to load or unload the
machine without loading ramps or a loading dock.
Loading ramps must be strong enough, have a low
angle, and correct height. Load and unload the
machine on a level surface. Never attempt to load
or unload the machine if the ramp incline exceeds
15 degrees. Failure to follow these instructions may
result in serious injury or death.
•
TO TURN RIGHT FROM A STOP: Moving the left
track control forward and moving the right track
control backward at the same time will increase the
turning rate.
TO TURN RIGHT
FROM A STOP
Move the left control
forward and the right
control backward
LOADING AND UNLOADING
1. Use loading ramps or a loading dock to load and unload the machine. Ensure loading ramps are strong
enough to support the load. When using ramps, do
not exceed a 15 degree incline (27 percent).
2. Ensure the wheels of the trailer and the tow vehicle
have been chocked front and rear.
3. Use the “SLOW” throttle setting when loading or
unloading. Always switch the two-speed control to
“LOW” speed operation when moving in reverse.
4. Drive the machine onto the trailer backwards (en-
gine rst). This will help prevent instability and keeps
the operator “up hill” from the machine during loading and unloading.
5. After loading, place chocks at the front and rear of
the tracks.
LIFTING
The unloaded TracHorse can be lifted using the single
central lift point. Some safety rules may require 3-point
lifting. (Center lift point plus 2-points on forward side of
rails.)
If lifting with any items in the bed, a 3-point lift is required. (A 3-point lifting sling is available, refer to Accessories page.)
TRANSPORTING
1. Read the instructions for loading and unloading in
this section.
2. Use chains and binders to secure the load to the
trailer.
ROUTINE MAINTENANCE
Good maintenance practices will keep the machine on
the job and increase its service life.
A very important maintenance practice is to keep the hy-
draulic uid clean at all times. Contaminated hydraulic
18 ► MHP3 Diesel User Manual
MAINTENANCE
uid causes rapid wear and/or failure of internal parts.
Follow the maintenance instructions contained in the engine manual.
ENGINE MAINTENANCE
Follow the maintenance schedule and general maintenance instructions in the engine maintenance and operation manual furnished with the unit. Normal maintenance includes:
• Check the air lter daily. Clean if necessary.
• Replace dry air lter every 200 hours of operation.
• Replace fuel lter every 100 hours of operation.
• Change engine oil after rst 50 hours of operation,
then after every 200 hours of operation. Change
more often if cold, moist, or dusty conditions exist.
• Check oil level daily.
• Change oil lter when engine oil is changed.
• Remove dirt and debris from engine with a cloth or
brush daily. Do not use water spray.
HYDRAULIC SYSTEM MAINTENANCE
Observe the following for maximum performance and
service life from the hydraulic system.
• Always keep hydraulic system and uids clean.
• Keep water out of uid. (See 1. below.)
• Keep air out of hydraulic lines. Hydraulic system
overheating and foam at the hydraulic tank breather
indicate air is present in the lines. Keep all suction
line ttings and clamps tight.
• Hydraulic system wear is noted by increased heat
during tool operation, reduced tool performance and
eventual system breakdown.
• Operate with the uid temperature at 50–140 °F/10–
60 °C for improved seal and hose life, and maximum
efciency.
1. Filling The Reservoir
Make sure the engine is stopped before opening the
ller cap. Add uid as needed. Fill slowly with the
recommended uid.
Stop lling when the sight gauge shows full. Fluid
must be visible in the sight gauge at all times.
Secure the ller cap before restarting the engine.
– Change the hydraulic lter element every 200
hours of operation. Change more often if cold,
moist or dusty conditions exist.
– Check oil cooler for debris. Remove debris with
air pressure.
2. Removing Condensed Moisture From Hydraulic
Fluid
Condensation is a frequent problem with cool mobile hydraulic circuits. This condition occurs in moist
or cold climates. When warm air in the hydraulic
tank draws moisture from the cooler air outside, water accumulates in the tank.
– Check hydraulic uid level daily. Add uid per
specications in this manual (Refer to Hydraulic
Fluid in this section).
– Remove condensed moisture from the hydrau-
lic uid by pumping the hydraulic uid into a 5
gal/20 l container through the pressure hose.
Make sure the engine is at idle when performing
this procedure. When the hydraulic reservoir is
empty, turn the engine OFF immediately.
– Allow the uid to sit long enough for the wa-
ter to settle to the bottom of the container.
Slowly pour the uid back into the hydraulic
tank, avoiding the water at the bottom of the
container.
3. Checking Suction Hose
Make sure the suction hose (from the hydraulic tank
to the pump inlet) is not kinked and is clamped securely. This reduces the risk of pump cavitation and
sucking air into the system. All pump ttings should
be tight.
4. Checking Hydraulic Lines and Fittings
Check for loose ttings, leaks, etc., throughout the
hydraulic circuit.
– Check hydraulic lines and ttings for leaks,
kinks, etc. daily. Do not use your hand to perform this check.
MHP3 Diesel User Manual ◄ 19
TESTING & TROUBLESHOOTING
GENERAL
Tests and adjustments should be performed periodically
to ensure the TracHorse is operating at maximum efciency. Stanley Circuit Tester (P/N 04182) is recommended. This tester can be used to isolate problems in
both the engine and hydraulic system prior to any TracHorse disassembly.
TESTING THE HYDRAULIC CIRCUIT
The following tests can be performed to ensure that the
hydraulic pump is supplying the correct ow and pressure and that the system relief valve is operating properly.
During these tests, make sure the engine is warm and
operating smoothly. If test results are not as specied,
refer to the troubleshooting table given in this section for
possible causes.
TESTING THE 5 GPM EHTMA TYPE C CIRCUITS
To test either of the two circuits, proceed as follows:
1. Set both Circuit Control Levers to the OFF (down)
position. Push the Combiner Knob IN to separate
the two circuits.
2. Connect the Stanley Circuit Tester across two hose
ends (where the tool would normally be connected)
of one circuit.
3. Fully open the tester restrictor valve (counter clockwise).
4. Start the engine and allow it to run until warm.
5. Pull the engine throttle control completely OUT so
that the engine is running at full RPM.
6. Move the Circuit Control Lever for the circuit to be
tested to the ON (up) position.
7. With the engine at high speed, the test ow gauge
should read 4–5 gpm/15–19 lpm.
8. Slowly turn the restrictor valve clockwise while
watching the pressure gauge. The ow rate should
stay at 4–5 gpm/15–19 Ipm as the pressure gauge
reaches 2100–2200 psi/148–155 bar.
9. At 2100–2200 psi/148–155 bar the relief valve
should begin to open. The pressure at which the relief valve just begins to open is commonly referred
to as the “cracking pressure”. At the “cracking pres-
sure”, the ow rate should start to drop because the
relief valve is allowing uid to bypass to the hydrau-
lic reservoir. The “cracking pressure” is preset at the
factory and if it is not within the above range, the
relief valve must be reset as follows:
a. Access to the relief valves can be gained
through the front of the dash behind the two
plugs (item 54, major assy). Use a socket and
ratchet wrench to loosen the locknut on the relief valve.
b. Use an Allen wrench to adjust the relief valve.
Turn clockwise to raise the pressure and counterclockwise to reduce the pressure.
c. Tighten the locknut and test for 2100–2200
psi/148–155 bar as described above.
d. Repeat the above test with the hoses and tester
connected to the other circuit.
TESTING THE 10 GPM EHTMA TYPE D CIRCUIT
The 10 gpm circuit is formed when the combiner knob
is pulled out and both circuit control levers are set to the
ON (up) position. This allows the output of both pump
sections to be combined at one set of ttings to provide
10 gpm/38 Ipm ow to a single tool. To test the circuit,
proceed as follows:
1. Perform Steps 1 through 5 under “Testing The 5
gpm EHTMA Type C Circuits”. Make sure a tool and
hoses ARE NOT CONNECTED to the other tool circuit.
2. Pull the combiner knob OUT to combine the two circuits.
3. Raise both control levers to the ON position.
4. With the engine at high speed, the test ow gauge
should read 9–10 gpm/34–38 lpm as the pressure
gauge reaches 2100–2200 psi/148–155 bar.
5. Perform Step 9 under “Testing The 5 gpm EHTMA
Type C Circuits”.
ADJUSTING TRACK TENSION
• The track tension is adjusted with the unit lifted off
the ground. Between the drive wheel and front idler
wheel, there are 3 smaller rollers.
• Once the unit is lifted off the ground, adjust the track
tension to achieve 3/8” to ½” sag below the center
small roller.
20 ► MHP3 Diesel User Manual
TROUBLESHOOTING
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the machine or tool, always check that the hydraulic power source is supplying the correct hydraulic ow and pressure as listed in the table. Use a owmeter known to be accurate. Check the
ow with the hydraulic oil temperature at least 80 °F/27 °C.
Problem Cause Solution
Machine will not start. Fuel lter plugged. Replace fuel lter.
No fuel. Add fuel.
Tool circuit switch is on. Turn tool circuit switch off.
Battery not connected. Attach battery cables, check wires.
Weak battery. Test battery, charge or replace.
Solenoid not working. Check solenoid operation and electrical
connections.
Fluid blowing out of uid
reservoir vent.
Machine stalls when track
controls are pushed.
Hydraulic tool will not operate. Tool circuit lever is OFF. Turn tool circuit lever ON.
Machine cannot be moved
using hydraulic controls.
Hydraulic tank overlled. Correct uid level.
Pump suction leak. Check suction connections.
Not enough throttle. Increase throttle setting / use low range.
Heavy load. Increase throttle setting / use low range.
Over maximum pay load. Max load 1000/454 kg.
Not enough throttle. Move throttle to FAST position.
Incorrect tool/hose connection. Check for correct connections.
Incorrect hose connection to tool. Make sure the tool hose circuit goes from
left (pressure) tting to tool and back
to the right tting (return). Fluid always
ows from the male to female ttings.
Quick disconnect ttings. Detach from hose, connect set together
and check for free ow.
Pump coupling defective. With the engine not running.
Check the coupling between the pump
and engine that it is engaged and is not
damaged. Caution: Keep hands clear of
rotating objects.
Suction hose kinked. Make sure suction hose from uid
reservoir to pump inlet has a smooth
curve.
Tool is defective. Refer to tool manual.
Relief valve defective Have machine serviced.
Defective gear box(es). Have machine serviced.
One or more defective hydraulic
component.
Hydraulic uid level low. Check for correct level.
Pump coupling defective. Have machine serviced.
Relief valve stuck open. Have machine serviced.
Have machine serviced.
MHP3 Diesel User Manual ◄ 21
SPECIFICATION
Engine ................................................................................................................................Ruggerini MD191 19 h.p.
Fuel Capacity........................................................................................................................................... 4.2 gal/16 ltr
Fuel Type ...........................................................................................................................................................Diesel
Pressure Range................................................................................................................................ 2000 psi/140 bar
Flow Range ...................................................................................................... 2 ea 5 gpm/20 lpm or 10 gpm/38 lpm
Couplers .........................................................................................HTMA/EHTMA Flush Face Type Male & Female
Connect Size and Type ....................................................................................................................................-8 SAE
Weight .................................................................................................................................................1316 lb/597 Kg
Maximum Pay Load .............................................................................................................................1000 lb/523 Kg
Overall Length ....................................................................................................................................... 93 in/109 cm
Overall Width ........................................................................................................................................... 36 in/92 cm
Overall Height ....................................................................................................................................43.5 in/110.5 cm
Hydraulic Oil Capacity ........................................................................................................................... 2.7 gpm/11 ltr
ACCESSORIES
DESCRIPTION PART NUMBER
Fuel Filter...........................................................................................................................................................40457
Oil Filter .............................................................................................................................................................40455
Air Filter .............................................................................................................................................................40456
Hydraulic Oil Filter Element ............................................................................................................................... 40408
Hydraulic Oil Filter Assy.....................................................................................................................................40080
Coupler Nose, 3/8 Port, Bruning........................................................................................................................03972
Coupler Body, 3/8 Port, Bruning ........................................................................................................................ 03973
Coupler Set, 3/8 Port , Bruning (includes nose & body) .................................................................................... 03971
Coupler Nose, 1/2 Port, Bruning........................................................................................................................03975
Coupler Body, 1/2 Port, Bruning ........................................................................................................................ 03976
Coupler Set, 1/2 Port, Bruning (includes nose & body) ..................................................................................... 03974
Hose Assy, 50 ft., with couplers (2 wire braid RR) ............................................................................................. 58448
Hose Assy, 50 ft., with couplers ......................................................................................................................... 31848
Hose Assy, 25 ft., with couplers ......................................................................................................................... 31972
Hose Assy, 25 ft., with couplers (2 wire braid RR) ............................................................................................. 58451
3-Point Lift Sling ................................................................................................................................................68358
22 ► MHP3 Diesel User Manual
MHP3 DIESEL PARTS
MHP3 DIESEL MAJOR ASSY PARTS ILLUSTRATION
ADJUSTING TRACK TENSION
• The track tension is adjusted with the unit lifted off
the ground. Between the drive wheel and front idler
wheel, there are 3 smaller rollers.
• Once the unit is lifted off the ground, adjust the track
tension to achieve 3/8” to ½” sag below the center
small roller.
MHP3 Diesel User Manual ◄ 23
MHP3 DIESEL PARTS
MHP3 DIESEL MAJOR ASSY PARTS LIST
ITEM P/N QTY DESCRIPTION
1 GTR20H12 1 DIESEL POWER UNIT
2 21319 2 CAPSCREW
3 69477 2 LIGHTS – 5" MULTIPURPOSE
4 — — NO ITEM
5 00719 4 NUT (PART OF ITEM 3)
6 04539 2 WASHER
7 — — NUT (PART OF ITEM 3)
8 — — NO ITEM
9 69488 2 KNOB
10 69753 2 VALVE HANDLE
11 69465 1 DASH SIDE COVER (L)
12 15661 4 CAPSCREW
13 04539 4 WASHER
14 69463 1 DASH
15 — — NO ITEM
16 69483 10 SCREW
17 39076 3 BOOT PLATE
18 38549 3 BOOT
19 — — NO ITEM
20 — — NO ITEM
21 56634 1 STOP CABLE ASSY
22 21715 1 THROTTLE CABLE ASSY
20 04539 4 WASHER
23 69464 1 DASH SIDE COVER (R)
24 69484 8 SCREW
25 370162 4 CAPSCREW
26 370154 2 CAPSCREW
26 370154 2 CAPSCREW
27 04353 12 NUT
28 371067 14 WASHER
29 69491 16 CAPSCREW
30 69467 2 TENSIONER STUD
31 371513 2 NUT
32 69459 6 ROLLERS
33 69472 2 DRIVE MOTOR
34 69474 2 SPROCKET
ITEM P/N QTY DESCRIPTION
35 24367 18 CAPSCREW
36 69473 2 RUBBER TRACK
37 69468 1 ROCK GUARD OUTER (R)
69469 1 ROCK GUARD OUTER (L)
(NOT SHOWN)
38 370151 8 CAPSCREW
39 69492 6 CAPSCREW
40 371514 8 NUT
42 69481 2 TENSIONER SPRING
43 69458 2 IDLER
44 68520 2 CAPSCREW
45 69466 2 IDLER YOKE
46 69470 2 ROCK GUARD INNER
47 69462 1 TAIL GATE
48 69482 2 LATCH
49 69461 1 MAIN BODY
50 59046 2 MODEL STICKER
51 47352 3 LIFT POINT STICKER
52 68335 1 THROTTLE STICKER
55 — — NO ITEM
53 69486 2 2 SPEED/LIGHT SWITCH
54 69487 2 PLUG
56 69489 2 EXHAUST CLAMP
57 69480 1 EXHAUST TURN-DOWN
58 69479 1 MUFFLER
59 69478 1 EXHAUST PIPE
68334 1 LIMIT ENGINE SPEED STICKER
00719 2 NUT, VALVE TO DASH
(NOT SHOWN)
370154 4 CAPSCREW
24 ► MHP3 Diesel User Manual
MHP3 DIESEL PARTS
MHP3 DIESEL HOSE & FITTINGS ILLUSTRATION – A
MHP3 Diesel User Manual ◄ 25
MHP3 DIESEL PARTS
MHP3 DIESEL HOSE & FITTINGS PARTS LIST – A
ITEM P/N QTY DESCRIPTION
1 69493 2 CONTROL VALVE
2 69495 4 STRAIGHT THREAD ADAPTOR
3 69496 2 STRAIGHT THREAD ELBOW
4 69497 4 STRAIGHT THREAD ADAPTOR
5 69503 2 HOSE ASSEMBLY
6 69504 2 HOSE ASSEMBLY
7 69505 2 HOSE ASSEMBLY
8 69506 2 HOSE ASSEMBLY
9 69507 2 HOSE ASSEMBLY
10 69494 2 SOLENOID VALVE
11 18556 2 STRAIGHT THREAD CONNECTOR
12 69500 2 SWIVEL NUT RUN TEE
13 350044 2 SWIVEL NUT RUN TEE
14 350059 4 STRAIGHT THREAD ELBOW
15 69501 4 STRAIGHT THREAD ADAPTOR
BSPP-37JIC
16 69502 2 STRAIGHT THREAD ADAPTOR
BSPP-37JIC
17 69498 2 REDUCER
18 69499 2 FEMALE JIC 37º SWIVEL
19 62199 4 HOSE CLAMP
20 08045 4 HOSE CLAMP
21 69741 1 HOSE, 1/2", 5.5 IN. LONG
22 69747 1 STREET TEE
23 07821 1 90º ELBOW
24 69740 1 HOSE 4-1/4 IN. LONG
25 69738 2 HOSE ASSY
26 69742 1 HOSE, 1/2", 10.5 IN. LONG
27 27767 2 ADJUSTABLE ELBOW, 90º
28 69744 1 BARBED TEE, 1/2"
29 27783 1 SUCTION HOSE
30 27782 1 INLET TUBE ASSY
ITEM P/N QTY DESCRIPTION
31 21335 1 ELBOW
32 27695 1 HYD PUMP
33 69739 2 HOSE ASSY
34 350104 1 STRAIGHT THREAD CONNECTOR
35 69743 1 HOSE, 1/2", 25.5 IN LONG
36 — — NO ITEM
37 — — NO ITEM
38 07822 2 HOSE BARB, 1/2 IN × 1/2 IN NPT
39 69508 3 PLATE
40 03947 2 CAPSCREW
41 04539 4 WASHER
42 00719 2 NUT
69798 1 SLEEVE (NOT SHOWN)
26 ► MHP3 Diesel User Manual
MHP3 DIESEL PARTS
MHP3 DIESEL HOSE & FITTINGS ILLUSTRATION & PARTS
– B
ITEM P/N QTY DESCRIPTION
1 07821 2 90° ELBOW
2 07822 1 HOSE BARB, 1/2" × 1/2" NPT
3 69740 1 HOSE, 1/2", 4-1/4" LONG
4 27767 2 ADJUSTABLE ELBOW
5 69738 2 HOSE ASSY
6 111 79 2 HOSE CLAMP
7 07747 1 SLEEVE, SUCTION
8 27781 1 TUBE, SUCTION
9 4306 1 HOSE
10 56696 1 HOSE, FUEL RETURN
11 04317 2 HOSE CLAMP
12 — — NO ITEM
13 69739 2 HOSE ASSY
14 69747 1 STREET TEE
15 69743 1 HOSE, 1/2", 25.5 IN LONG
ITEM P/N QTY DESCRIPTION
16 69742 1 HOSE, 1/2", 10.5 IN LONG
17 69741 1 HOSE, 1/2", 5.5 IN LONG
18 69745 2 HOSE SWIVEL
19 69744 1 BARBED TEE, 1/2"
20 08045 8 HOSE CLAMP
21 27782 1 INLET TUBE ASSY
22 27783 1 SUCTION HOSE
23 — 2 HOSE CLAMP, 1-1/4"
24 40413 1 90º ELBOW, 1/2" NPT × 3/4 HOSE
25 350104 2 STRAIGHT THREAD CONNECTOR
MHP3 Diesel User Manual ◄ 27
MHP3 DIESEL PARTS
MHP3 DIESEL POWER UNIT FRAME ILLUSTRATION
28 ► MHP3 Diesel User Manual
MHP3 DIESEL PARTS
MHP3 DIESEL POWER UNIT FRAME PARTS LIST
ITEM P/N QTY DESCRIPTION
1 — — NO ITEM
2 66788 1 SIGHT GAUGE
3 21319 11 CAPSCREW
4 04539 15 WASHER
5 66475 1 GRILLE ASSY
6 — — NO ITEM
7 29133 1 WARNING STICKER
8 01219 4 LOCK WASHER
9 — — NO ITEM
10 02116 2 CAPSCREW
11 01459 2 LOCK WASHER
12 21335 1 ELBOW
13 69739 2 HOSE ASSY
14 27695 1 PUMP
15 — 1 KEY (INCLUDED WITH PUMP)
16 21687 1 COUPLING ASSY (INCL ITEMS 17)
17 — 1 PART OF ITEM 16
18 69749 1 HYDRAULIC TANK
19 69746 1 BATTERY HOLD DOWN
20 59136 1 BATTERY
21 69737 1 BATTERY BOX W/LID
22 — — NO ITEM
23 31241 5 CAPSCREW
24 04539 4 WASHER
25 56671 2 CAPSCREW
26 56644 1 TANK SUPPORT
27 03031 10 WASHER
28 04416 3 CAPSCREW
ITEM P/N QTY DESCRIPTION
29 21319 1 CAPSCREW
30 00719 10 LOCKNUT
31 — — NO ITEM
32 — — NO ITEM
33 04353 12 NUT
34 — — NO ITEM
35 — — NO ITEM
36 04585 8 WASHER
37 56645 1 TANK SUPPORT
38 69595 1 DASH PANEL
39 69564 1 FRAME WELDMENT
40 — — NO ITEM
41 — — NO ITEM
42 — — NO ITEM
43 — — NO ITEM
44 56635 1 FUEL TANK
45 68644 1 FUEL TANK CAP
46 — — SUPPLIED WITH ITEM 44
47 69735 1 TOP GRILLE
48 35686 1 DECAL, HYD. FLUID
MHP3 Diesel User Manual ◄ 29
MHP3 DIESEL PARTS
MHP3 DIESEL POWER UNIT ENGINE ILLUSTRATION &
PARTS
ITEM P/N QTY DESCRIPTION
1 — 1 FILTER ASSY (INCL W/ ITEM 19)
2 370508 2 CAPSCREW
3 — 2 CAPSCREW (INCL W/ ITEM 19)
4 31241 4 CAPSCREW
5 03031 4 LOCK WASHER
6 40053 1 COOLER MOUNT
7 56670 1 FUEL FILTER BRACKET
8 40078 1 COOLER
9 — — NO ITEM
10 40054 1 COOLER MOUNT
11 — — NO ITEM
12 56637 1 COOLER BRACE
13 08668 10 SHEET METAL SCREW
14 02474 4 CAPSCREW
15 02477 8 WASHER
16 07783 1 BLOWER HOUSING
17 21681 4 SPACER
18 07818 1 KEY
30 ► MHP3 Diesel User Manual
ITEM P/N QTY DESCRIPTION
19 56641 1 ENGINE, RUGGERINI MD191
20 14876 4 CAPSCREW
21 04585 AR WASHER
22 32232 4 CAPSCREW
23 38878 1 SPACER
24 56640 1 BLOWER WHEEL
25 38877 1 BLOWER HUB
26 39057 1 QD BUSHING
27 — 4 CAPSCREW (INCL W/ ITEM 26)
28 21687 1 COUPLING ASSY
29 08669 1 GASKET
30 56691 1 INLET RING
31 08667 5 TAPPING SCREW
32 03906 2 LOCKNUT
33 69747 1 STREET TEE
34 07821 1 90° ELBOW, 1/2" HOSE, 1/2" NPT
35 07822 1 HOSE BARB, 1/2" HOSE, 1/2" NPT
36 59144 1 MUFFLER BRKT. (NOT SHOWN)
MHP3 DIESEL PARTS
MHP3 DIESEL POWER UNIT RESERVOIR ILLUSTRATION &
PARTS
ITEM P/N QTY DESCRIPTION
1 52774 1 LID
2 52775 1 SPRING
3 01202 1 O-RING
4 40408 1 FILTER ELEMENT
40080 1 FILTER ASSY (INCL ITEMS 1–5, 11–13,
15, 18, 20)
5 58487 1 FILTER BOWL
6 69799 1 BREATHER VENT
7 40364 1 ELBOW, 45°
8 43688 1 CAPSCREW
9 69749 1 TANK
10 40133 1 GRIP PLATE
11 52782 1 GASKET
ITEM P/N QTY DESCRIPTION
12 52773 1 DIPSTICK BOLT
13 52772 1 DIPSTICK
14 04306 1 HOSE
15 58486 1 FILTER HEAD
16 03044 1 NIPPLE
17 58460 1 COUPLING
18 58489 1 PLASTIC WASHER
19 1117 9 1 HOSE CLAMP
20 01258 1 O-RING
21 66788 1 SIGHT GAUGE
22 69796 1 ORIFICE PLUG
43592 1 SERVICE KIT
MHP3 Diesel User Manual ◄ 31
MHP3 DIESEL PARTS
MHP3 DIESEL POWER UNIT VALVE ILLUSTRATION &
PARTS
ITEM P/N QTY
1 69595 1 DASH PANEL
2 20606 1 HOUR METER
3 28046 1 DECAL, CARBON MONOXIDE
4 28047 1 DECAL, HOT PARTS
5 07492 4 SPIROL PIN
6 00016 2 O-RING
7 05848 1 COMBINER SPOOL
8 69736 2 PORT PLUG
9 — — NO ITEM
10 07822 1 ELBOW, HOSE BARB
11 05844 1 ON/OFF SPOOL, LH
12 06989 2 O-RING
13 06988 2 BACK-UP RING
14 04313 2 RETAINING RING
15 04216 2 WASHER
16 — — NO ITEM
32 ► MHP3 Diesel User Manual
ITEM P/N QTY
17 24291 2 ROD
18 02633 2 KNOB
19 07492 4 SPIROL PIN
20 01545 7 PIPE PLUG
21 27661 1 CONTROL BLOCK
22 69748 2 ADAPTER
-10 SAE × 3/8 MALE NPT
23 03971 2 COUPLER SET
24 05847 1 COMBINER KNOB
25 — — NO ITEM
26 05843 1 ON/OFF SPOOL, RH
27 27931 4 CAPSCREW
28 04539 4 WASHER
29 28045 1 DECAL, CIRCUIT 1 OR 2
30 35677 1 DECAL, TO START
31 51297 1 DECAL, CHECK HYDRAULICS
Stanley Hydraulic Tools
3810 SE Naef Road
Milwaukie, Oregon 97267-5698 USA
(503) 659-5660 / Fax (503) 652-1780
www.stanleyhydraulics.com
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