Page 1
HYDRAULIC
POWER UNIT
USER MANUAL
Safety, Operation and Maintenance
© 2017 STANLEY Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
72464 2/2018 Ver. 14
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2 ► HP TWIN8 User Manual
Page 3
TABLE OF CONTENTS
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS .......................................................................................................................................... 5
TOOL STICKERS ......................................................................................................................................................7
HOSE TYPES ............................................................................................................................................................8
HOSE RECOMMENDATIONS ..................................................................................................................................9
HTMA / EHTMA REQUIREMENTS .........................................................................................................................10
PREPARATION FOR USE ...................................................................................................................................... 11
OPERATION ............................................................................................................................................................ 12
MAINTENANCE ......................................................................................................................................................13
CIRCUIT TESTING .................................................................................................................................................16
TROUBLESHOOTING ............................................................................................................................................17
SPECIFICATIONS ................................................................................................................................................... 18
ACCESSORIES & FILTERS ....................................................................................................................................19
LOWER FRAME ILLUSTRATION ...........................................................................................................................20
LOWER FRAME PARTS LIST.................................................................................................................................21
HYDRAULIC GROUP ILLUSTRATION ...................................................................................................................22
HYDRAULIC GROUP PARTS LIST ........................................................................................................................23
UPPER FRAME ILLUSTRATION & PARTS LIST ...................................................................................................24
HYDRAULIC FLOW ................................................................................................................................................25
CONTROL BLOCK DETAIL ..................................................................................................................................... 26
HYDRAULIC & FUEL TANKS ..................................................................................................................................27
ELECTRICAL SCHEMATIC .....................................................................................................................................28
To ll out a product warranty validation form, and for information on your warranty,
visit www.stanleyinfrastructure.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 Infrastructure
recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an authorized
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 certied dealer, call STANLEY Infrastructure at (503) 659-5660 and ask for a Customer Service Representative.
HP TWIN8 User Manual ◄ 3
Page 4
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 indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This safety alert and signal word indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicates 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 ► HP TWIN8 User Manual
Page 5
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 tool and
hose.
These safety precautions are given for your safety.
Review them carefully before operating the tool and
before performing general maintenance or repairs.
Supervising personnel should develop additional
precautions relating to the specic work area and local
safety regulations. If so, place the added precautions in
the space provided in this manual.
The HP TWIN8 Hydraulic Power Unit will provide safe and
dependable service if operated in accordance with the
instructions given in this manual. Read and understand
this manual and any stickers and tags attached to the
tool and hoses before operation. Failure to do so could
result in personal injury or equipment damage.
• Operator must start in a work area without
bystanders. The operator must be familiar with all
prohibited work areas such as excessive slopes and
dangerous terrain conditions.
• Establish a training program for all operators to
ensure safe operation.
• Do not operate the power unit unless thoroughly
trained or under the supervision of an instructor.
• Always wear safety equipment such as goggles,
ear protection, breathing protection, head protection
and safety shoes at all times when operating the
power unit and a hydraulic tool.
• Do not inspect or clean the power unit while it is
running. Accidental engagement of the unit can
cause serious injury.
• Always use hoses and ttings rated at 2500 psi/172
bar with a 4-to-1 safety factor. Be sure all hose
connections are tight.
• Be sure all hoses are connected for correct 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.
• NEVER OPERATE THE POWER UNIT IN A
CLOSED SPACE. Inhalation of engine exhaust can
be fatal.
• Do not operate a damaged or improperly adjusted
power unit.
• Do not wear loose clothing or unbound long hair
when operating the tool. Loose items can become
entangled with the tool and cause serious injury.
• Keep all parts of your body away from the working
parts of the power unit.
• Keep clear of hot engine exhaust.
• Do not add fuel to the power unit while the power
unit is running or is still hot.
• Do not operate the power unit if gasoline odor is
present.
• Do not use ammable solvents around the power
unit engine.
• Do not operate the power unit within 3.3 ft/1 m of
buildings, obstructions or ammable objects.
• Do not reverse tool rotation direction by changing
uid ow direction.
• Allow power unit engine to cool before storing in an
enclosed space.
• Always keep critical tool markings, such as labels
and warning stickers, legible.
• To avoid personal injury or equipment damage,
all tool repair, maintenance and service must only
be performed by authorized and properly trained
personnel.
• Do not operate the machine on excessive slopes or
unstable terrain where “tip over” is a hazard.
• Do not exceed the rated limits of the equipment
or use the equipment for applications beyond its
design capacity.
• Be aware of surrounding hazards. Noise created by
the power unit and the tools it operates may mask
early indications of approaching hazards. Warning:
Hydraulic uid under pressure could cause skin
injection injury. If you are injured by hydraulic uid,
get medical attention immediately.
• Be observant of the hydraulic hoses lying about the
work area, they can be a tripping hazard.
• Use proper lifting techniques when handling the
power unit and do not over-reach.
• Only use the power unit 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
operating the power unit and tools. DO NOT operate
HP TWIN8 User Manual ◄ 5
Page 6
SAFETY PRECAUTIONS
if affected by medications, drugs or alcohol.
• Keep clear of hot engine parts and exhaust.
• Do not operate tools if oil temperature exceeds 140
°F/60 °C. Operation at high temperatures can cause
operator discomfort or injury.
• Disconnect battery before servicing electrical
components. Electrocution or burns could result
from improper contact.
• Loading and unloading of the power unit is
dangerous. Never attempt to load or unload the
power unit without loading ramps, loading dock or
an over head crane. Loading ramps must be strong
enough, have a low angle and correct height. Load
and unload the power unit on a level surface. Never
attempt to load or unload the power unit if the ramp
incline exceeds 15 degrees. Failure to follow these
instructions may result in serious injury or death.
• Warning: Use of this tool on certain materials
could generate dust potentially containing a variety
of hazardous substances such as asbestos,
silica or lead. Inhalation of dust containing these
or other hazardous substances could result in
serious injury, cancer or death. Protect yourself
and those around you. Research and understand
the materials you are cutting. Follow correct safety
procedures and comply with all applicable national,
state or provisional health and safety regulations
relating to them, including, if appropriate arranging
for the safe disposal of the materials by a qualied
person.
• Warning: When using pressure cleaning
equipment, do not aim the jet directly at electrical
component parts and insulating material. Do not
place the water jet directly in the air intake ports.
Blow the unit dry before operating.
6 ► HP TWIN8 User Manual
Page 7
TOOL STICKERS
LOGO, TWIN8 DECAL P/N-74771
DASH, TWIN8, DECAL P/N-205043
STANLEY, HYD TANK, DECAL P/N-74770
YELLOW ON CLEAR BACKGROUND
LOGO TWIN8, HYD TANK DECAL P/N-205046
SAFETY, TWIN8, DECAL P/N-205047
STANLEY, FUEL TANK DECAL P/N-74706
LOGO, TWIN8, FUEL TANK DECAL P/N-205045
HP TWIN8 User Manual ◄ 7
Page 8
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:
Certi ed non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic ber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certifi ed 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 certi ed 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 certifi ed 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. 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 ► HP TWIN8 User Manual
Page 9
Min. Working Pressure
USE
Press/Return)
(
HOSE RECOMMENDATIONS
Certi ed 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
recommendations are intended to keep return
line pressure (back pressure) to a minimum
acceptable level to ensure maximum tool
performance.
This chart is intended to be used for hydraulic
tool applications only based on STANLEY 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 maximum hydraulic system relief valve
setting.
All hydraulic hose must meet or exceed
speci cations as set forth by SAE J517.
HP TWIN8 User Manual ◄ 9
Page 10
HTMA / EHTMA REQUIREMENTS
HTMA / EHTMA REQUIREMENTS
TOOL TYPE
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 minimum operating temperature)
Temperature: Suf cient heat rejection capacity to limit
maximum uid temperature to:
(At maximum expected ambient temperature)
Minimum 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 minimum full- ow ltration 25 microns 25 microns 25 microns 25 microns
Sized for ow of at least:
(For cold temp startup and maximum dirt-holding capacity)
Hydraulic uid, petroleum based (premium grade, antiwear, non-conductive) Viscosity (at minimum and maximum
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.
TYPE I TYPE II TYPE RR TYPE III
4-6 GPM
(15-23 LPM)
1500 psi
(103 bar)
2100-2250 psi
(145-155 bar)
250 psi
(17 bar)
400 ssu*
(82 centistokes)
140° F
(60° C)
3 hp
(2.24 kW)
40° F
(22° C)
30 GPM
(114 LPM)
100-400 ssu
(20-82
centistokes)
7-9 GPM
(26-34 LPM)
1500 psi
(103 bar)
2100-2250 psi
(145-155 bar)
250 psi
(17 bar)
400 ssu*
(82 centistokes)
140° F
(60° C)
5 hp
(3.73 kW)
40° F
(22° C)
30 GPM
(114 LPM)
100-400 ssu
(20-82
centistokes)
9-10.5 GPM
(34-40 LPM)
1500 psi
(103 bar)
2200-2300 psi
(152-159 bar)
250 psi
(17 bar)
400 ssu*
(82 centistokes)
140° F
(60° C)
6 hp
(5.22 kW)
40° F
(22° C)
30 GPM
(114 LPM)
100-400 ssu
(20-82
centistokes)
11-13 GPM
(42-49 LPM)
2100-2250 psi
(145-155 bar)
(82 centistokes)
100-400 ssu
centistokes)
1500 psi
(103 bar)
250 psi
(17 bar)
400 ssu*
140° F
(60° C)
7 hp
(4.47 kW)
40° F
(22° C)
30 GPM
(114 LPM)
(20-82
*SSU = Saybolt Seconds Universal
EHTMA
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 speci cation page for tool speci c requirements.
10 ► HP TWIN8 User Manual
B
3.5-4.3 GPM
(13.5-16.5
LPM)
1870 psi
(129 bar)
2495 psi
(172 bar)
C
4.7-5.8 GPM
(18-22 LPM)
1500 psi
(103 bar)
2000 psi
(138 bar)
CLASSIFICATION
D
7.1-8.7 GPM
(27-33 LPM)
1500 psi
(103 bar)
2000 psi
(138 bar)
9.5-11.6 GPM
(36-44 LPM)
1500 psi
(103 bar)
2000 psi
(138 bar)
11.8-14.5 GPM
(45-55 LPM)
1500 psi
(103 bar)
2000 psi
(138 bar)
Page 11
SAE 30 *
Synthetic 5W-30
5W-30
10W-30 **
PREPARATION FOR USE
PREPARATION FOR USE
Do not operate the power unit until you have read the engine
operating and maintenance instructions manual furnished
with the unit.
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 detergent oil classied “For Service SF, SG, SH,
SJ or higher” as specied in the engine operators manual. Do
not use special additives. Outdoor temperatures determine
the proper oil viscosity for the engine. Use the chart to
select the best viscosity for the outdoor temperature range
expected.
°F °C
104 40
86 30
68 20
50 10
32 0
14 -10
QUICK DISCONNECT COUPLERS
HTMA-approved quick disconnect couplings are
installed to hydraulic hoses so that the direction of
oil ow is always from the male to the female quick
disconnect as shown on “Hose Recommendations” on
page 9. Quick disconnect couplings and hose ttings
are selected so that additional ttings such as reducer or
adapter ttings are not required.
If adapter ttings are used, they must be approved steel
hydraulic ttings meeting a minimum operating pressure
rating of 2500 psi/172 bar. Do not use galvanized pipe
ttings or black pipe ttings.
Use thread tape or pipe joint compound when installing
quick disconnect couplings to hose or tool ttings. Follow
the instructions furnished with the selected thread
sealant. DO NOT OVERTIGHTEN THE FITTINGS.
3. HYDRAULIC FLUID
RECOMMENDED HYDRAULIC OILS
Below is a list of recommended oils by brand.
-4 -20
-22 -30
* Below 40°F (4°C) the use of SAE 30 will result in hard
starting.
** Above 80°F (27°C) the use of 10W-30 may cause
increased oil consumption. Check oil level more
frequently.
2. ENGINE FUEL LEVEL
Check the fuel level. If low, ll with clean, fresh unleaded
gasoline with a minimum of 87 octane. Gasoline with up to
10% ethanol (gasohol) is acceptable.
3. HYDRAULIC CONNECTIONS
The recommended hose length is 25 ft/8 m with a 1/2
inch/12.7 mm inside diameter. The hoses must have
a working pressure rating of at least 2500 psi/175 bar.
Each hose end must have male thread ends compatible
with HTMA (Hydraulic Tool Manufacturers Associations)
quick disconnect ttings (NPT type threads).
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
HP TWIN8 User Manual ◄ 11
Page 12
OPERATION
5. BATTERY
The supplied 12-Volt DC battery is a sealed nonspillable, maintenance-free battery and is fully charged.
Make sure the battery cables are tight and charging
circuit functions are operating properly.
A fully charged battery should read 12.8V -13.0V.
Overcharging can harm your battery beyond
recovery. When using an automatic charger, refer to
the charger manufacturer’s instructions.
If the engine runs out of gas or dies during operation
and the ignition switch is left in the ON or RUN
position as this will drain the battery. Make sure the
ignition switch is returned to the OFF position.
COUPLERS (HOSE CONNECTIONS)
Top Male Quick Disconnect
Couplers (Pressure Fluid Out)
Bottom Female Quick Disconnect
Couplers (Return Fluid In)
Facing the control panel, the top (2) male couplers are
the PRESSURE FLUID OUT ttings. The bottom (2)
female quick disconnect couplers are the RETURN
FLUID IN. Their are two independent circuits, one on the
left and one on the right, each controlled by the adjacent
lever.
CONTROLS (DUAL CIRCUIT)
Throttle Control Lever
Flow Control Lever(s) In Off Position
When the throttle control lever is in the far left position,
it will produce 5 GPM to both circuits. With the lever in
the far right position will produce 8 GPM to both circuits.
This allows two tools that can run simultaneously at 5 or
8 GPM.
The ow control levers, when turned “ON” (up position),
turns on ow.
Starter Switch
STARTUP
1. Before starting the engine, check the engine oil and
hydraulic uid level.
2. Check to make sure the ow Control levers are in
the OFF position (Down). The power unit will not
start if the levers are in the “UP” position (ON).
3. Connect hoses and the tool as described in “Hose
Recommendations” on page 9.
4. It is not necessary to choke the engine. The engine
is equipped with an electronic fuel management
system and does not have a manual choke.
5. Set the throttle control lever to the left (5-GPM)
setting. Once the unit starts and is warmed-up the
lever can be moved to the 8-GPM setting if desired.
6. Turn the Ignition Switch to the START position. After
the engine starts, release the switch.
7. Allow the engine to warm up.
8. Turn on the ow to the tool by lifting the ow control
levers up into the “ON” position, lift both levers if
running two circuits.
SHUTDOWN
1. Ensure the ow control levers are in the OFF position
(Down).
2. Move the Ignition Switch to the OFF position.
12 ► HP TWIN8 User Manual
Page 13
MAINTENANCE
COLD WEATHER STARTUP
1. Use the procedures described under “STARTUP”
and then follow the procedure 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.
3. If the tools and tool hoses are cold, it is recommended
to allow hydraulic uid to circulate through the tool
hoses until warm, before using the tool.
ENGINE MAINTENANCE
Follow the maintenance schedule and general
maintenance instructions and emissions control
maintenance in the engine operators manual furnished
with the power unit.
Fuel system emissions maintenance:
• Check the fuel system emissions components
once a year to verify that the components are in
good condition and do not show signs of leakage. If
leakage is found, replace part.
• Check fuel lines, tank, cap and ttings frequently for
cracks or leaks. Replace if necessary.
• Clean the fuel cap area of dirt and debris.
• Replacement parts must be the same and installed
in the same position as the original parts.
HYDRAULIC SYSTEM MAINTENANCE
• Check hydraulic uid level daily. Add uid per
specications in this manual. (See “3. HYDRAULIC
FLUID” on page 11.)
• Remove condensed moisture from the hydraulic
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 water 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.
• Each day, check hydraulic lines and ttings for
leaks, kinks, etc. Do not use your hand to perform
this check.
• 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.
BATTERY MAINTENANCE
• If the power unit is not in use for two or more
months, check the battery once a month and
charge if the battery voltage is below 12.5V.
Charge at 1.3A for 5-10 hours.
• If the battery voltage is below 12.0V, charge at 1.3A
for 12-18 hours, let the battery sit for 1-2 hours and
check the voltage. If the voltage is not 12.5V or
greater, replace the battery.
• Always charge using a charger as rated as close to
1.3A as possible.
• Checking battery voltage and charging can be
done through the 12V marine plug on the battery
cover when using an appropriate adapter.
STORAGE
• Clean the unit thoroughly before storage. Do not use
water pressure.
• Always store the unit in a clean and dry facility.
• If the unit will be stored for a prolonged period (over
30 days), add a fuel additive to the fuel tank to
prevent the fuel from gumming. Run engine for 2
minutes to circulate the additive throughout the fuel
system.
When storing fuel or equipment with fuel in the tank,
store away from appliances that have pilot lights or
other ignition sources as they can ignite fuel vapors.
•
Replace crankcase oil with new oil.
• Remove spark plugs and pour approximately 1
ounce (30 ml) of engine oil into each cylinder.
Replace spark plugs and crank the engine slowly to
distribute the oil.
• Check hydraulic reservoir for water. If water is
found, change the oil and circulate it through the
tool hose and tool. (See “HYDRAULIC SYSTEM
MAINTENANCE” on page 13).
• Disconnect tool hoses.
HP TWIN8 User Manual ◄ 13
Page 14
MAINTENANCE
Standard Maintenance Schedule
Hours Daily 5 25 50 75 100 125 150 175 200
Foam Air Pre-Cleaner C I I R I I I R
Paper Air Filter C R R
In-line Fuel Filter R
Spark Plugs (Gap-0.030 in (0.76 mm) R R
Engine Oil Filter R R R R R
EngineHydraulics
Engine Oil R R R R R
Engine Oil Level I
Remove Dirt & Debris With Brush I
Clean Air Cooling System (don’t use water) C C
Hydraulic Fluid Level I
Hydraulic Fluid R
Remove Condensed Moisture R R
Check For Leaks, Kinks, etc. I
Hydraulic Fluid Filter I I I R
Clean Hydraulic Fluid Cooler C C
Relief Valve Settings I I I I
Heavy Duty Maintenance Schedule
Hours Daily 5 25 50 75 100 125 150 175 200
Foam Air Pre-Cleaner C* R I R I R I R
Paper Air Filter C* R R R R
In-line Fuel Filter R
Spark Plugs (Gap-0.030 in (0.76 mm) R R R R
Engine Oil Filter R R R R R R R R R
EngineHydraulics
Engine Oil R R R R R R R R R
Engine Oil Level I
Remove Dirt & Debris With Brush I
Clean Air Cooling System (don’t use water) C C C C
Hydraulic Fluid Level I
Hydraulic Fluid R
Remove Condensed Moisture R R R R
Check For Leaks, Kinks, etc. I
Hydraulic Fluid Filter I R I R
Clean Hydraulic Fluid Cooler ** C C C C
Relief Valve Settings I I I I
C
R
For additional maintenance information see the Briggs & Stratton engine operator’s manual that was supplied
with the power unit.
14 ► HP TWIN8 User Manual
Clean (* In dusty conditions or when airborne debris is present, clean more often).
Inspect (** In dusty conditions or when airborne debris is present, inspect the back side of cooler often).
I
Replace
Page 15
FUEL FILTER, FUEL LINE
FROM TANK TO FILTER
“GG” CONNECTION
See page 27
MAINTENANCE
SEE page 19 FOR REPLACEMENT FILTER PART NUMBERS
ENGINE OIL
COOLER
HYDRAULIC OIL FILTER
FUEL LINE FROM TANK
TO FUEL PUMP
THROTTLE
CABLE
FUEL VAPOR LINE
FROM CARBON CANISTER
TO ENGINE (CONNECTION “HH”)
See page 27
ENGINE OIL CHECK &
FILL (DIP STICK)
QUICK ENGINE
OIL DRAIN
HYDRAULIC
TANK
AIR CLEANER
FUEL TANK
SPARK PLUG
HYDRAULIC
OIL COOLER
HP TWIN8 User Manual ◄ 15
Page 16
CIRCUIT TESTING
GENERAL
Tests and adjustments should be performed periodically
to ensure the power unit is operating at maximum
efciency. Use a calibrated ow and pressure tester.
This tester can be used to isolate problems in both the
engine and hydraulic system prior to any power unit
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 in this section for
possible causes.
TESTING THE 5 OR 8 GPM CIRCUIT
To test the circuit, proceed as follows:
Throttle Control Lever
4. Check that the tester restrictor valve is fully open
(counterclockwise) on the ow and pressure tester.
5. Start the engine and allow it to run until warm.
6. With the throttle control in the far left position, the
5-GPM circuit can be tested, or moving the lever to
the far right will allow testing the 8-GPM circuit.
a. 5-GPM Range 4-6 GPM/15-23 LPM
b. 8-GPM Range 7-9 GPM/26.5-34 LPM
7. Slowly turn the restrictor valve clockwise while
watching the pressure gauge. The ow rate shown
above in step 6 should stay at the selected ow
range.
8. When the pressure reaches 2100–2200 psi/145–
152 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 pressure,” the ow rate should start
to drop because the relief valve is allowing uid to
bypass to the hydraulic reservoir. The “cracking
pressure” is preset at the factory and if it is not
within the above range (2100-2200) psi, the relief
valve must be re-set as follows: The relief valves are
located on the control block which is directly behind
the couplers on the dash panel (See item 10, page
22) for location. Use a wrench to loosen the nut
on the relief valve.
9. Use an Allen wrench to adjust the relief valve. Turn
clockwise to raise the pressure and counterclockwise
to reduce the pressure. Tighten the nut and retest.
10. Check both the 5 and 8 GPM ow settings and then
follow the same procedure to test the other circuit
(each circuit has its own relief valve).
Flow Control Lever(s)
1. Install a calibrated ow and pressure tester across
the two hose ends (where the tool would normally
be connected).
2. Set both ow control levers to the OFF (down)
position.
3. Set the throttle control lever to the far left for 5 GPM,
after the engine is started you can leave the lever
in this position if you are testing the 5 GPM circuit
or move the lever to the far right to test the 8 GPM
circuit.
16 ► HP TWIN8 User Manual
Page 17
TROUBLESHOOTING
Problem Cause Solution
Engine will not start Battery not connected. Attach battery cables, check wires.
Weak battery. Test battery, charge or replace.
No fuel. Add fuel.
Fuel lter plugged. Replace fuel lter.
Defective spark plugs.
Remove plugs, check gap, clean or
replace.
Low Engine Oil
Flow Control Levers in the “ON”
position.
Fluid blowing out of uid reservoir
vent.
Hydraulic tool won’t operate. Flow control lever(s) not in the (ON)
Hydraulic tank overlled. Correct the uid level.
Pump suction leak. Check suction connections. Tighten
position.
Incorrect hose connection to tool. Make sure the tool hose circuit
Quick disconnect ttings defective. Detach from hose, connect set
Hydraulic uid level low. Check for correct uid level. Fill
Relief valve stuck open. Adjust or replace valve.
Suction hose kinked. Make sure suction hose from
Tool is defective. Refer to tool manual.
Check Oil Level
Move the levers to the off position.
if necessary.
Check that the ow control lever(s)
are in the ON position.
goes from left (pressure) tting to
tool and back to the right tting
(return). Fluid always ows from the
male to female ttings.
together and check for free ow.
using the recommended uid.
uid reservoir to pump inlet has a
smooth curve.
HP TWIN8 User Manual ◄ 17
Page 18
SPECIFICATIONS
HP TWIN8 SPECIFICATIONS
Engine: ............................................................................................................. 27 hp OHV, Briggs & Stratton Engine
Output Capacity (Dual 5 or Dual 8 Circuits) ................ Two 5 GPM/20 LPM Circuits or Two 8 GPM/30 LPM Circuits
Length:............................................................................................................................................. 37.5 in./95.25 cm
Width: .............................................................................................................................................. 25.75 in./65.4 cm
Height: ................................................................................................................................................... 30 in./76.2cm
Weight (Wet): .......................................................................................................................................360 lbs/163 kg
Fuel Tank Capacity: ............................................................................................................................. 4.7 gal./17.8 ltr
Estimated Gas Consumption Per Hour .................................................................................................. 2.5 gal/9.4 ltr
Hydraulic Reservoir Capacity: ............................................................................................................. 3.2 gal./12.1 ltr
Relief Valve “Crack” Setting .............................................................................................................. 2100 psi/145 bar
Full Relief Setting ............................................................................................................................. 2500 psi/172 bar
Nominal Pressure ............................................................................................................................. 1500 psi/103 bar
Max Pressure ................................................................................................................................... 2000 psi/138 bar
Circuit Type ............................................................................................................................................. Open Center
HTMA/EHTMA Category ........................................................................................................................Type 1 and 2
C
POWER UNITS & GAS/FUEL DRIVEN EQUIPMENT: A1. Federal Emission Component Compliance 40CFR part
1060.120 STANLEY warrants all fuel system emission components for 2 years from the date of original purchase
provided there has been no abuse, neglect, modications, or improper maintenance.
Components covered. The emission-related warranty covers all components whose failure would increase the
evaporative emissions. Your emission-related warranty does not cover components whose failure would not
increase evaporative emissions. Coverage under this warranty extends only to the following parts; fuel tank,
fuel cap, fuel hose and vapor hose from the fuel tank to the engine and any connectors that are apart of the fuel
system.
The equipment is designed, built, and equipped so it conforms at the time of sale to the ultimate purchaser and
each subsequent purchaser and is in compliance with 40 C.F.R. 1060.120 standards. The equipment is free from
defects in materials and workmanship that may keep it from meeting these requirements.
D
18 ► HP TWIN8 User Manual
Page 19
ACCESSORIES & FILTERS
ACCESSORIES
Coupler Male, Parker SAE.................................................................................................................................72398
Coupler Female, Parker SAE.............................................................................................................................72397
Coupler Set Male & Female, Parker SAE..........................................................................................................72396
Flow and Pressure Tester...................................................................................................................................04182
Hose Assy, 50 ft., with couplers ........................................................................................................................31848
Hose Assy, 25 ft., with couplers ........................................................................................................................31972
FILTERS
MODEL
OIL FILTER AIR FILTER FUEL FILTER
ENGINE
HP28B02 18384 205053 205057 40408
PART
KIT, FRAME/
TANKS/BRACKETS
(P/N-212797)
INCLUDES ITEMS
AT RIGHT AND
PICTURED BELOW.
ITEM
1 202717 1 CASTING HANDLE RELEASE
2 202725 1 SKID PLATE, POWER UNIT
3 202726 1 AXLE BRACE, POWER UNIT
4 202731 1 ASSEMBLY, LOWER FRAME
5 203034 1 TIEDOWN, BATTERY
6 203038 1 ASSY, ROTATION STOP
7 203040 1 ASSY, GRILL, AIR INTAKE
8 203046 1 ASSY, TORQUE ARM
9 203254 1 SUPPORT FOOT ASEMBLY
10 204841 1 BATTERY COVER, 12V PLUG
11 204842 1 ASSEMBLY, FUEL TANK
12 206055 1 ASSY, BRACKET, CARBON CANISTER
13 207988 1 BRACKET, TANK MOUNT
14 207998 1 ASSEMBLY, HYD TANK
15 212798 1 ASSY, UPPER, COMPLETE
NO
QTY. DESCRIPTION
HYDRAULIC
OIL FILTER
12 15
13
1
14
4
2
11
3
5 6 7 8 9 10
HP TWIN8 User Manual ◄ 19
Page 20
3
Item 26 control
block, on page
22 ,mounts to
backside of this
plate.
22
10
LOWER FRAME ILLUSTRATION
Item 5 pressure switch (not pictured)
16
mounts next to engine oil lter.
5
6
10
31
26
17
30
1
10
9
15
10
12
EE
13
11
14
7
10
19
Item 19 mounts
inside lower
frame on axles
20
10
CC
23
25
10
3
BB CONNEC-
TION see page
27
DD
28
10
4
29
DD
2
24
CONNECTION
10
AA
see page 27
10
8
18
DD
21
16
3
Item 24 mounts
inside lower
frame using
fasteners item 10
CC above
20 ► HP TWIN8 User Manual
3
10
Page 21
LOWER FRAME PARTS LIST
ITEM P/N QTY DESCRIPTION
1 12470 2 HHCS 10-24UNCX0.875
2 12787 4 FLANGE NUT 5/16-18
3 19534 6 HEX FLANGE BOLT 3/8-16 X 1
4 21713 2 VIBRATION MOUNT
5 31765 1 PRESSURE SWITCH
6 40369 2 WIRE BOOT
7 59074 6 HEX FLANGE BOLT 1/4-20 X 1/2
8 67511 2 RUBBER MOUNT
9 71937 4 HEX FLNG BOLT 3/8-16 X 1
10 71939 28 HEX FLANGE BOLT 1/4-20 X 3/4
11 72402 1 STARTER SOLENOID
12 72403 1 MUFFLER
13 72412 1 CLAMP 2.5 - 3.5 IN
14 72413 1 SOLENOID GROUND STRAP
15 72448 1 BRIGGS M49 27-HP
16 371067 2 WASHER 3/8" I.D.
17 208887 1 THROTTLE CABLE ASSY
18 202725 1 SKID PLATE, POWER UNIT
19 202726 1 AXLE BRACE, POWER UNIT
20 202731 1 ASSEMBLY, LOWER FRAME
21 203031 2 TIRE/WHEEL 4.10/3.50-6 FF
22 203034 1 TIEDOWN, BATTERY
23 203036 1 BATTERY, SEALED, 12V, 13AH
24 203038 1 ASSY, ROTATION STOP
25 203040 1 ASSY, GRILL, AIR INTAKE
26 203222 4 CAPSCREW 1/4-20UNCX1/2
28 203254 1 SUPPORT FOOT ASSEMBLY
29 203411 1 CLIP NUT 1/4-20 .125-.156 GRIP
30 204331 2 WASHER 1/4 NEOPRENE
31 204332 1 KNOB, TAPERED, RED
32 72439 1 WIRE HARNESS (NOT
PICTURED)
33 35395 1 WIRE ASSY 6 AWG RED 24 in.
NOT SHOWN
34 72453 1 WIRE ASSY 6 AWG BLACK 35 in.
NOT SHOWN
35 72454 1 WIRE ASSY 6 AWG RED 5 in.
NOT SHOWN
36 212797 1 KIT FRAME/TANK/BRACKETS
NOTE: Kit, Frame/Tank/Brackets P/N-212797
Includes the Following items:
From page 20 - (Items 18, 19, 20, 22, 24, 25 & 28)
From page 22 - (item 25)
From page 24 - (Item 3, 5 and 7)
From page 26 - (Item 52)
From page 27 - (Items 7, 15, & 18)
HP TWIN8 User Manual ◄ 21
Page 22
HYDRAULIC GROUP ILLUSTRATION
Connects to (Item
37
11
9
7) below
Connects to back
of control block,
item 26 Below
2
1
16 18
26
10
48
31
50
Connects to item 10 EE on
lower frame, see page 20
Connects to hose (Item
37) at left (see JJ)
Connects to hose (Item
ITEM # 50 Control
36) at left (see FF)
Block Assy
36
11
11
34
12
FF
JJ
7
9
21
49
35
32
19
33
3
4
29
30
44
14
15
28
See page 20 for
mounting location
of Item 26 Control
Block
Connects to
lower ttings
on Hyd tank
See page 26 for
close-up of Control
Block
38
9
11
47
45
45
17
40
20
13
22
46
23
25
Connects to item
24 on page 20
inside lower frame.
24
5
9
11
9
22 ► HP TWIN8 User Manual
11
42
Page 23
HYDRAULIC GROUP PARTS LIST
ITEM P/N QTY DESCRIPTION
1 04216 2 WASHER
2 04313 2 RETAINING RING
3 06988 2 BACK-UP RING -018
4 06989 2 O-RING
5 10793 2 HSHCS 3/8-16 X 1-1/4
7 40364 1 ELBOW 45 3/4 SAE TO 3/4
BARB
9 59104 6 HOSE BARB 12SAE 3/4 HOSE
10 59131 2 RELIEF VALVE
11 62199 10 HOSE CLAMP
12 71908 1 OIL COOLER
13 PARTS NO LONGER USED
14 72397 2 COUPLER FEMALE, PARKER
15 72398 2 COUPLER MALE, PARKER
16 72414 2 MICRO LIMIT SWITCH
17 72425 1 HYDRAULIC PUMP, DUAL
18 72455 4 CAPSCREW 4-40 x1/2 HSBH
19 72521 1 SQUARE KEY-.25 X .75
20 350237 1 HOLLOW HEX PLUG - 8 SAE
21 202740 2 ASSY, MANIFOLD TUBE
22 207647 1 COUPLER, PUMP/FAN (IF
ORDERING COUPLER MUST
PURCHASE 207647 WHICH
INCLUDES ITEMS 32 & 35)
23 203025 1 BUSHING, TAPER LOCK, 5/8"
24 203026 1 NUT, COUPLER, PUMP/FAN
25 203046 1 ASSY, TORQUE ARM
26 203049 1 CONTROL BLOCK, DUAL
(SEE NOTE FOR COMPLETE
ASSEMBLY)
28 203052 1 SPOOL, ON-OFF, RH
29 203053 1 SPOOL, ON-OFF, LH
30 203054 2 ROD, ON-OFF SPOOL
31 203063 2 CONNECTOR, -8 SAE-1/2
ORFS
32 207647 1 BLOWER WHEEL, (IF ORDER-
ING BLOWER WHEEL MUST
PURCHASE 207647 WHICH
INCLUDES ITEMS 22 & 35)
33 PART NO LONGER USED
34 203067 1 ASSY, HOUSING, BLOWER, 9"
ITEM P/N QTY DESCRIPTION
35 203222 4 CAPSCREW 1/4-20UNCX1/2
36 203232 1 HOSE, COOLER-FILTER
04306X20.25
37 203233 1 HOSE, COOLER-BLOCK
04306X30.00
38 203245 2 HOSE, PRESSURE, PUMP-
BLKHD
40 203246 2 JAM NUT
42 203247 2 HOSE TANK-PUMP
04306X21.00
44 204332 2 KNOB, TAPERED, RED
45 204538 2 CONNECTOR, -10 SAE-5/8
46 204539 1 HSHCS 7/16-20 X 1.00
47 204808 1 VALVE ASSY, ATM
48 204839 1 TEE, RUN, -12 SAE
49 204840 1 HOSE, BLOCK-FILTER
04306X14.5
50 203051 1 CONTROL BLOCK ASSY
NOTE:
CONTROL BLOCK ASSEMBLY P/N-203051 (INCLUDES THE FOLLOWING)
Item 1 thru 4, 10, 16, 18, 26, 28 thru 30.
COUPLER SET 72396 (INCLUDES MALE AND FEMALE)
HP TWIN8 User Manual ◄ 23
Page 24
3
45
678
UPPER FRAME ILLUSTRATION & PARTS LIST
13
6
7
2
5
1
12
11
14
14
8
3
9
10
DD CONNECTION Mounts
to Lower Frame see Fas-
15
14
tener DD page 20
4
ITEM P/N QTY DESCRIPTION
1 60946 1 HOUR METER
2 67899 1 ROTARY SWITCH & KNOB
3 204841 1 BATTERY COVER
4 202714 1 HANDLE, ASSEMBLY
5 202717 1 HANDLE RELEASE
6 202723 1 LIFT BRACKET
7 212798 1
UPPER FRAME ASSEMBLY In-
cludes the Following (Item 6
and 13).
24 ► HP TWIN8 User Manual
NOTE: Complete Upper Frame Assembly (item # 7) P/N212798 Includes the Following (Items 6 and 13).
ITEM P/N QTY DESCRIPTION
8 203228 2 FASTENER, 1/4 TURN, 6MM
9 203229 2 RETAINER, 1/4 TURN, 6MM
10 203231 2 RECEPTACLE, 1/4 TURN, 6MM
11 204328 2 GROOVED CLEVIS PIN .5 X 3.00
12 204329 1 GROOVED CLEVIS PIN .5 X 2.50
13 204330 2 SHSS 3/8 X 1/4 X 1/2 THD LGTH
14 204335 3 E-CLIP .500 DIA
15 64942 1 12 VOLT RECEPTACLE ASSY
Page 25
HYDRAULIC TANK
HYDRAULIC FLOW
NOTE: The hydraulic lter assembly has a “Filter service kit” available P/N-43592 that consists
of: Filter Element, Lid Gasket and Bowl O-ring.
HYDRAULIC FILTER
ASSY
COOLER
CONTROL BLOCK
TOOL
CONNECTIONS
PUMP
HP TWIN8 User Manual ◄ 25
Page 26
CONTROL BLOCK DETAIL
CONTROL BLOCK ASSEMBLY P/N-203051 (INCLUDES THE FOLLOWING)
Item 5 through 8, 13, 18, 20, 25, 27 through 29 and 53.
28
20
25
50
11
40
52
49
12
15
13
3
Connects to lower
tting on cooler,
see JJ page 22
10
14
32
41
33
Connects to upper
tting on cooler,
see FF page 22
14
14
30
22
36
17
37
16
27
53
ITEM P/N QTY DESCRIPTION
3 01525 2 CAPSCREW 3/8-16 X 3/4
5 04216 2 WASHER
6 04313 2 RETAINING RING
7 06988 2 BACK-UP RING
8 06989 2 O-RING
10 40364 1 ELBOW
11 40433 2 HEX FLANGE BOLT
12 59104 2 HOSE BARB 12SAE 3/4 HOSE
13 59131 2 RELIEF VALVE
14 62199 6 HOSE CLAMP
15 71939 4 HEX FLANGE BOLT
16 72397 2 COUPLER FEMALE PARKER
17 72398 2 COUPLER MALE PARKER
18 72414 2 MICRO LIMIT SWITCH
20 72455 4 CAPSCREW 4-40 x1/2 HSBH
22 202740 2 ASSY, MANIFOLD TUBE
25 203049 1 CONTROL BLOCK, DUAL
26 ► HP TWIN8 User Manual
29
12
39
18
-10 SAE ttings
attach to pump.
8
7
5
6
ITEM P/N QTY DESCRIPTION
27 203052 1 SPOOL, ON-OFF, RH
28 203053 1 SPOOL, ON-OFF, LH
29 203054 2 ROD, ON-OFF SPOOL
30 203063 2 CONNECTOR, -8 SAE-1/2
32 203232 1 HOSE, COOLER-FILTER
33 203233 1 HOSE, COOLER-BLOCK
34 203245 2 HOSE, PRESSURE, PUMP
36 203246 2 JAM NUT
37 204332 2 KNOB, TAPERED, RED
38 204538 2 CONNECTOR, -10 SAE-5/8
39 204808 1 VALVE ASSY, ATM
40 204839 1 TEE, RUN, -12 SAE
41 204840 1 HOSE, BLOCK-FILTER
49 206046 1 CARBON CANISTER, 400CC
50 206055 1 BRACKET, CANISTER
52 207988 1 BRACKET, TANK MOUNT
53 350237 1 HOLLOW HEX PLUG - 8 SAE
34
38
Page 27
HYDRAULIC & FUEL TANKS
HYDRAULIC TANK
HYDRAULIC OIL FILTER P/N40408 (NOT PICTURED)
2
BOLTS TO TOP
6
OF CONTROL
BLOCK ITEM 26,
3
page 22.
CONNECTS TO TANK
MOUNT BRACKET
(item 52, page 26)
1
FUEL TANK
FUEL LINE CONNECTION
“GG” TO FUEL FILTER.
1
16
18
3
6
14
10
13
7
VAPOR LINE CONNECTION
“HH” TO ENGINE.
7
5
6
19
6
11
6
7
4
5
CONNECTS TO
“BB” SEE page 20
ITEM P/N QTY DESCRIPTION
1 71939 4 HEX FLANGE BOLT
2 72405 1 FILTER HOUSING ASSY
3 203056 4 WASHER
4 203223 1 SIGHT GAUGE, 5" W/TEMP
5 203224 2 ISOLATOR, GROMMET
6 203253 5 CAPSCREW
7 207998 1 ASSEMBLY, HYD TANK
12
15
CONNECTS TO
“AA” SEE page 20
ITEM P/N QTY DESCRIPTION
1 01525 2 CAPSCREW 3/8-16 X 3/4
3 40433 2 HEX FLANGE BOLT 5/16-18
5 71794 1 FUEL CAP
6 72317 4 5/16" SPRING HOSE CLAMP
7 72451 2 1/4" SPRING HOSE CLAMP
8 203224 2 ISOLATOR, GROMMET
10 204458 1 ELBOW, 90, 1/4 NPT
11 204459 1 FUEL PICKUP, 21", 1/4 NPT
12 204462 1 SIGHT GAUGE, 5", FUEL
13 204536 1 HOSE, VAPOR 72441X26.5
14 204537 1 HOSE, FUEL 04308X16
15 204842 1 ASSEMBLY, FUEL TANK
16 206046 1 CARBON CANISTER, 400CC
18 206055 1 ASSY, BRACKET
19 206057 1 HOSE, FUEL 04308X8
HP TWIN8 User Manual ◄ 27
8
Page 28
ELECTRICAL SCHEMATIC
28 ► HP TWIN8 User Manual
Page 29
Page 30
Page 31
Page 32
STANLEY Infrastructure
6430 SE Lake Road
Portland, Oregon 97222 USA
(503) 659-5660 / Fax (503) 652-1780
www.stanleyinfrastructure.com
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