GTR20
HYDRAULIC
POWER UNIT
USER MANUAL
Safety, Operation and Maintenance
© 2014 Stanley Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
65114 3/2015 Ver. 12
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TABLE OF CONTENTS
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS..........................................................................................................................................5
TOOL STICKERS......................................................................................................................................................6
HYDRAULIC HOSE REQUIREMENTS.....................................................................................................................7
HOSE RECOMMENDATIONS ..................................................................................................................................8
FIGURE 1. TYPICAL HOSE CONNECTIONS.......................................................................................................8
EHTMA/HTMA REQUIREMENTS ............................................................................................................................9
OPERATION............................................................................................................................................................10
ROUTINE MAINTENANCE .....................................................................................................................................14
PROGRAMMABLE CONTROLLER ........................................................................................................................15
FAULT CODES........................................................................................................................................................16
TESTING & TROUBLESHOOTING ........................................................................................................................17
TROUBLESHOOTING ............................................................................................................................................18
SPECIFICATIONS...................................................................................................................................................19
ACCESSORIES.......................................................................................................................................................20
GTR20 BRIGGS ILLUSTRATION ...........................................................................................................................21
GTR20 BRIGGS PARTS LIST.................................................................................................................................22
GTR20 HONDA ILLUSTRATION.............................................................................................................................23
GTR20 HONDA PARTS LIST..................................................................................................................................24
FRAME PARTS .......................................................................................................................................................25
FUEL TANK & CAP .................................................................................................................................................26
HOSES, FITTINGS & CLAMPS ..............................................................................................................................27
MAIN WIRING HARNESS.......................................................................................................................................28
DUAL CIRCUIT WIRE HARNESS...........................................................................................................................29
IMPORTANT
To fill 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 certified dealer. Please read the following warning.
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 certified dealer, call Stanley Hydraulic Tools at the number listed on the back of this
manual and ask for a Customer Service Representative.
GTR20 User Manual ◄ 3
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SAFETY SYMBOLS
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair ac-
tions 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.
DANGER
WARNING
CAUTION
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 avoid-
ed, may result in property damage.
CAUTION
NOTICE
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 dam-
age to the equipment.
IMPORTANT
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 mainte-
nance personnel.
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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 equipment.
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 specific work area and local safety regulations. If
so, place the added precautions in the space provided on page 4.
In addition to this manual, read and understand safety and operating instructions in the Engine Operation Manual furnished
with the power unit.
This 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 Power Unit. Failure to do so could result in per-
sonal 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, 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 fittings 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 flow direction to and from the tool being used.
Do not inspect hoses and fittings 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, improperly adjusted power unit.
Never wear loose clothing that can get entangled in the working parts of the power unit.
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 flammable solvents around the power unit engine.
Do not operate the power unit within 3.3 ft/1 m of buildings, obstructions or flammable objects.
Do not reverse tool rotation direction by changing fluid flow 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 autho-
rized and properly trained personnel.
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TOOL STICKERS
59126
Power Unit Dash Decal
59125
Dual Circuit Decal
59126 DASH RR DECAL
59125 DUAL CIRCUIT CECAL
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HYDRAULIC HOSE REQUIREMENTS
The rated working pressure of the hydraulic hose must be equal to or higher than the relief valve setting on the hy-
draulic system. There are three types of hydraulic hose that meet this requirement and are authorized for use with
Stanley Hydraulic Tools. They are:
Certified non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic fiber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certified 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 reinforce-
ment, and weather resistant synthetic rubber cover. This hose is conductive and must never be used near
electrical conductors.
Fabric-braided (not certified or labeled non-conductive) — constructed of thermoplastic or synthetic rubber in-
ner tube, synthetic fiber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. This
hose is not certified 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
D A N G E R
D A N G E R
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.
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.
FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROP-
ERLY TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
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.
2. BEFORE USING HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
ON OR NEAR ELECTRIC LINES. WIPE THE ENTIRE LENGTH OF THE HOSE AND FIT-
TING 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.
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.
SEE OTHER SIDE
SEE OTHER SIDE
SIDE 1
SIDE 2
(Shown smaller than actual size)
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
D A N G E R
D A N G E R
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.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKSABRASIONS, 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.
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.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
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.
SEE OTHER SIDE
SEE OTHER SIDE
SIDE 1
SIDE 2
(Shown smaller than actual size)
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HOSE RECOMMENDATIONS
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HTMA / EHTMA REQUIREMENTS
HTMA / EHTMA REQUIREMENTS
HTMA
TOOL TYPE
HYDRAULIC SYSTEM REQUIREMENTS
TYPE I
TYPE II
TYPE RR
9-10.5 gpm
(34-40 lpm)
1500 psi
TYPE III
11-13 gpm
(42-49 lpm)
1500 psi
4-6 gpm
7-9 gpm
Flow Range
(15-23 lpm)
1500 psi
(103 bar)
(26-34 lpm)
1500 psi
(103 bar)
Nominal Operating Pressure
(at the power supply outlet)
(103 bar)
(103 bar)
2100-2250 psi
(145-155 bar)
2100-2250 psi
(145-155 bar)
2200-2300 psi
(152-159 bar)
2100-2250 psi
(145-155 bar)
System relief valve setting
(at the power supply outlet)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
Maximum back pressure
(at tool end of the return hose)
400 ssu*
400 ssu*
400 ssu*
400 ssu*
Measured at a max. fluid viscosity of:
(82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
(at min. operating temperature)
Temperature: Sufficient heat rejection
capacity to limit max. fluid temperature to:
(at max. expected ambient temperature)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
Min. cooling capacity at a temperature
3 hp
5 hp
6 hp
7 hp
difference of between ambient and fluid
temps
(2.24 kW)
40° F
(3.73 kW)
40° F
(5.22 kW)
40° F
(4.47 kW)
40° F
NOTE:
(22° C)
(22° C)
(22° C)
(22° C)
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
25 microns
30 gpm
(114 lpm)
25 microns
30 gpm
(114 lpm)
25 microns
30 gpm
(114 lpm)
25 microns
30 gpm
(114 lpm)
Min. full-flow filtration
Sized for flow of at least:
(For cold temp. startup and max.
dirt-holding capacity)
Hydraulic fluid Petroleum based
(premium grade, anti-wear, non-conductive)
Viscosity (at min. and max. operating temps)
100-400 ssu*
100-400 ssu*
(20-82 centistokes)
100-400 ssu*
100-400 ssu*
NOTE:
When choosing hydraulic fluid, the expected oil temperature extremes that will be experienced in service determine the
most suitable temperature viscosity characteristics. Hydraulic fluids with a viscosity index over 140 will meet the requirements
over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
CLASSIFICATION
EHTMA
HYDRAULIC SYSTEM
REQUIREMENTS
C
B
D
Flow Range
3.5-4.3 gpm
(13.5-16.5 lpm) (18-22 lpm)
1870 psi
(129 bar)
4.7-5.8 gpm
7.1-8.7 gpm
(27-33 lpm)
1500 psi
9.5-11.6 gpm
(36-44 lpm)
1500 psi
11.8-14.5 gpm
(45-55 lpm)
1500 psi
Nominal Operating Pressure
(at the power supply outlet)
1500 psi
(103 bar)
(103 bar)
(103 bar)
(103 bar)
System relief valve setting
(at the power supply outlet)
2495 psi
(172 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
NOTE: These are general hydraulic system requirements. See tool specification page for tool specific requirements
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OPERATION
4. HYDRAULIC FLUID
PREPARATION FOR USE
Do not operate the power unit until you have read the
engine operating and maintenance instructions manual
furnished with the unit.
RECOMMENDED HYDRAULIC OILS
Below is a list of recommended oils by brand.
Brand
CITGO
AMS Oil
Biodegradable
Description
Hydurance AW32
HVH 32
No
No
1. ENGINE CRANKCASE OIL LEVEL
Always check the oil level before starting the engine. Exxon Mobil
No
Univis HVI26*
DTE 10 Excel
S2 V 32
Make sure the oil level is at the FULL MARK on the dip-
Exxon Mobil
No
stick. Do not overfill. Use detergent oil classified "For
Shell
No
Service SE, SF, SG" as specified in the engine operat-
Chevron
No
Rando HDZ 32
Unax AW-WR-32
Green Bio 32
EAL 224H
ing and maintenance manual. See engine manual for oil
viscosity grade.
Conoco Phillips
Clarion (CITGO)
Exxon Mobil
Chevron
No
Yes
Yes
Yes
Yes
Yes
2. SPARK PLUG
Clarity AW32
Envirologic 132
Naturelle HF-E-32
On power units equipped with Briggs & Stratton Engines,
ONLY Champion RC12YC or equivalent can be used
Terresolve
Shell
For power units equipped with Honda Engines, ONLY
Denso J16CR-U or equivalent can be used.
Incorrect type spark plugs can produce radio frequency
interference that will corrupt and damage the controller.
Failure to use the correct spark plug could result in a
warranty that will not be considered.
*Recommended for extreme cold temperatures
5. 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 H.T.M.A. (HYDRAULIC TOOL MANUFACTURERS
ASSOCIATION) quick disconnect fittings (NPT type
threads). (See Figure 2.)
3. ENGINE FUEL LEVEL
Check the fuel level. If low, fill with un-leaded gasoline
with a minimum of 85 octane.
Figure 1. Control Panel
Facing the control panel, the 2 left male quick discon-
nect fittings are the PRESSURE FLUID OUT fittings.
The 2 right female quick disconnect fittings are the RE-
TURN FLUID IN fittings.
QUICK DISCONNECT COUPLERS
H.T.M.A. approved quick disconnect couplings are in-
stalled to hydraulic hoses so that the direction of oil flow
is always
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OPERATION
from the male to the female quick disconnect as shown
VALVE BLOCK
in figure 2. Quick disconnect couplings and hose fittings
are selected so that additional fittings such as reducer or
adapter fittings are not required.
PRESSURE
PRESSURE
Adapter, 1/2 inch Male Pipe x
-10 SAE O-Ring (P/N 07882)
If adapter fittings are used, they must be approved steel
hydraulic fittings meeting a minimum operating pressure
rating of 2500 psi/172 bar. Do not use galvanized pipe
fittings or black pipe fittings.
HTMA, 1/2 inch Male Quick
Disconnect Coupler (P/N
24061, Coupler Body or
P/N 03974, Coupler Set)
Use thread tape or pipe joint compound when installing
quick disconnect couplings to hose or tool fittings. Fol-
low the instructions furnished with the selected thread
sealant. DO NOT OVERTIGHTEN THE FITTINGS.
HTMA, 1/2 inch Female Quick
Disconnect Coupler (P/N
24060, Coupler Body or
P/N 03974, Coupler Set)
6. BATTERY
1/2 inch. ID Hose, 25 ft to 50
ft long.
(25 ft: P/N 04972 or P/N
05009, Dual Hydraulic Hose)
(50 ft: P/N 04978 or P/N
05008, Dual Hydraulic Hose)
The supplied 12 Volt DC battery is a non-spillable, main-
tenance-free battery and is fully charged.
Make sure the battery cables are tight and charging cir-
cuit functions are operating properly.
NOTICE
Do not charge the battery with a standard auto-
motive battery charger. This type of charger pro-
duces a charging amperage higher than 2 amps.
Charging the battery at higher than 2 amps will
damage the battery.
1/2 inch Male Pipe Hose End
HTMA, 1/2 inch Male Quick
Disconnect Coupler (P/N
24061, Coupler Body or
P/N 03974, Coupler Set)
HTMA, 1/2 inch Female Quick
Disconnect Coupler (P/N
24060, Coupler Body or
P/N 03974, Coupler Set)
NOTICE
If the engine runs out of gas or dies during op-
eration and the ignition switch is left in the ON or
RUN position, this could drain the battery. Make
sure the ignition switch is returned to the OFF
position.
Adapter, 3/8 inch Male Pipe x
-8 SAE O-Ring (P/N 00936)
PRESSURE
PRESSURE
RETURN
RETURN
Figure 2. Hydraulic Connections
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OPERATION
the operator has selected with the flow selector switch.
CONTROLS
When a tool is not being used the engine will not return
to idle until either the flow selector switch is turned to
the off position or the throttle control switch is turned to
auto-on.
This unit is equipped with an advanced proportional en-
gine control system. It provides a means of controlling
engine speed by adjusting the fuel control lever with an
actuator. The Power Unit provides two 5 gpm/19 lpm up
to 2000 psi/140 bar circuits or one 10 gpm/37.8 lpm up
Note: It may be necessary to reset the Controller.
to 2000 psi/140 bar circuit.
Flow Selector tool
Circuit 1 Switch
Throttle Control Switch
At times it may be neccessary to reset the controller.
This could happen if a fault occurs in the controller. For
example, excessive engine speed. If a fault does occur
the power unit will return to an idle and the operator will
have no control of the unit. To reset the controller, simply
turn off the power unit and restart it.
USING THE 12 VOLT DC OUTLET
Flow Selector tool
Circuit 2 Switch
Ignition Switch
A 12 VDC outlet is on specific models. The DC outlet is
ON at all times.
Figure 3. Panel Control Valve
Two 5 gpm hydraulic tools can be connected to the tool
circuit or one 10 gpm tool. The circuit is activated by
turning one or both flow selector switches to 5 or both
switches to 10 gpm. If both are at 10 gpm, 10 gpm can
be had by connecting to either coupler set.
IMPORTANT
The accessories (if left on) that are plugged
into this outlet could drain the battery.
THROTTLE CONTROL
The throttle control permits the operator to select one
of 2 operating modes after the engine has warmed up.
When starting the engine, make sure the flow selector
switch is in the OFF position. The throttle control switch
can be set in either the AUTO-IDLE-ON or AUTO-IDLE-
OFF positions.
STARTUP
Before starting the engine make sure the flow selector
switches are in the OFF position.
Note: The power unit will not start if the flow selec-
tor switches are not in the "OFF" position.
Pull choke knob out and move the Throttle Control
Switch to the auto-idle-off or the auto-idle-on position,
whichever mode of operation the operator prefers. En-
sure the flow selector switch is in the OFF position.
AUTO-ON
When the throttle control switch is in the "AUTO-ON"
position, the oil flow is regulated automatically when the
trigger on the tool activated. When the tool is not being
used the engine will return to idle automatically, after a
10 second delay.
Turn the Ignition Switch to the START position. After the
engine starts, release the switch.
This setting will produce one or two 5 gpm/19 lpm cir-
cuits or one 10 gpm/37.8 lpm circuit depending on which
postion the operator has selected with the flow selector
switch.
Gradually push in the choke knob as the engine begins
to idle smoothly.
Allow the engine to warm up.
AUTO-OFF
Connect hoses and the tool as desrcribed on pages 7
and 8.
When the throttle control switch is in the "AUTO-OFF"
position, the engine speed is held to maintain 5 gpm/19
lpm or 10 gpm/37.8 lpm depending on which position
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OPERATION
SHUTDOWN
FOR 5 GPM OPERATION
1. Ensure the flow selector switches are in the OFF po-
sition (center position).
For 5 gpm operation, select mode of operation with the
Throttle Control switch, either auto-idle-on or the auto-
idle-off position. Move the flow selector switch to the 5
gpm position.
2. Unless already at idle the power unit should return
to idle. This may take a few seconds for the unit to react
due to a built-in program delay.
Note:
If operating both 5 gpm circuits move both flow se-
lector switches to the 5 gpm position. Both 5 gpm
circuits are independent from each other and can be
operated on its own.
3. Allow the engine to idle for approximately one minute
and move the Ignition Switch to the OFF position.
When finished operating the tool, move one or both flow
selector switches to the OFF position.
FOR 10 GPM OPERATION
For 10 gpm operation, select mode of operation with the
Throttle Control Switch, either auto-idle-on or the auto-
idle-off position. Move both flow selector switches to the
10 gpm position.
When finished operating the tool, move both flow selec-
tor switches to the OFF position.
Note:
Either set of couplers can be used for the 10 gpm circuit,
but DO NOT use two separate tools when in the 10 gpm
operation mode.
COLD WEATHER STARTUP
1. Use the procedures described under "STARTUP"
and then follow the procedure below.
2. Hydraulic fluids are thicker in cold weather. There-
fore, it is recommended that the engine be run at low
idle long enough to bring the fluid temperature up to a
minimum of 50°F/10°C.
3. If the tools and tool hoses are cold, it is recom-
mended to allow hydraulic fluid to circulate through the
tool hoses until warm before using the tool.
GTR20 User Manual ◄ 13
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ROUTINE MAINTENANCE
ENGINE MAINTENANCE
STORAGE
Follow the maintenance schedule and general mainte-
nance instructions in the engine maintenance and op-
eration manual furnished with the power unit.
• Clean the unit thoroughly before storage. Do not use
water pressure.
• Always store the unit in a clean and dry facility.
SPARK PLUG
On power units equipped with Briggs & Stratton Engines,
ONLY Champion RC12YC or equivalent can be used.
• 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 a short period to
circulate the additive.
For power units equipped with Honda Engines, ONLY
Denso J16CR-U or equivalent can be used.
Incorrect type spark plugs can produce radio frequency
interference that will corrupt and damage the controller.
Failure to use the correct spark plug could result in a
warranty that will not be considered.
• 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.
HYDRAULIC SYSTEM MAINTENANCE
• Check hydraulic fluid level daily. Add fluid per specifi-
cations in this manual. (See "HYDRAULIC FLUID" un-
der the section titled "OPERATING INSTRUCTIONS".
• 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"
earlier in this section).
• Remove condensed moisture from the hydraulic
• Disconnect tool hoses.
fluid by pumping the hydraulic fluid into a 5 gal/20 l con-
tainer through the pressure hose. Make sure the engine
is at idle when performing this procedure. When the hy-
draulic reservoir is empty turn the engine off immedi-
ately.
• Allow the fluid to sit long enough for the water to settle
to the bottom of the container. Slowly pour the fluid back
into the hydraulic tank, avoiding the water at the bottom
of the container.
• Each day, check hydraulic lines and fittings for leaks,
kinks, etc. Do not use your hand to perform this check.
• Change the hydraulic filter 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.
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PROGRAMMABLE CONTROLLER
The Stanley programmable controller is an electronic tion.
engine governor that provides a means of controlling
and limiting engine speed by adjusting the fuel control
lever with a proportional actuator.
a. If actuator does not move it is defective. (Replace).
b. If actuator moves throttle to wide-open position, the
module is defective or there is a wiring problem. (Re-
place).
The controller is factory preset and has no manual ad-
justments.
FAULT CODES
A flashing LED indicates
the fault condition
The Stanley controller is capable of identifying certain
fault conditions and alerting the user to them. A flash-
ing LED indicates the fault conditions. The current fault
code list is shown on the following page. Please note
the following:
1. When power is first applied to the controller, the LED
will flash just once for one second to indicate that the
LED is working.
2. If there are multiple faults, the LED will flash them all in
sequence. Count the flash codes to determine the fault
conditions or connect the Calibration Tool to observe the
fault conditions. (Use the “Display Faults” option under
the Monitor Menu.)
TROUBLESHOOTING GUIDELINES
Please follow the checklist below to troubleshoot your
Stanley controller.
1. Check battery voltage for stability and correct value.
The LED will turn on for one second when the controller
4500 is first powered up.
3. If there are no faults, the LED will flash once at
reset and from then on indicate the detection of engine
speed. A continuous ON LED indicates that a valid
engine speed is being sensed.
2. Check the actuator linkage for binding and backlash.
4. The controller will attempt to shut down for some
faults and will not permit starting after reset with faults
1, 5 and 8.
CHECKING PERFORMANCE CONTROL™
(ELECTRONIC GOVERNOR-STATIC
CHECK)
To determine whether a governor problem is being
caused by the actuator or the control module, perform
the following static check exactly in order shown.
A pair of jumper wires and a known good 12-volt battery
is required.
1. Disconnect red and green wires from the control mod-
ule to actuator.
2. Attach jumper wires from battery to RED and GREEN
wires to actuator.
a. Attach 12 volt + (positive) to RED wire.
b. Attach 12 volt – (negative) to GREEN wire.
3. Actuator should move throttle lever to wide open posi-
GTR20 User Manual ◄ 15
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FAULT CODES
FLASH
CODE
ENGINE
SHUTDOWN
FAULT
CORRECTIVE ACTION
1
APECS unit not calibrated
yes
Calibrate APECS unit.
2
Engine speed excessive
yes
Check parameter settings. Over speed criteria may be
too sensitive.
Check for electrical noise entering controller.
Check wiring and connections.
Check case ground.
Make sure linkage moves freely, without backlash.
Check tip of speed sensor.
3
Engine speed unusually low
yes
Check parameter settings.
Check linkage and the actuator travel.
Ensure that load is not greater than engine capacity.
4
Engine shutdown due to engine
protection input
yes
Check parameter settings.
Check what may have triggered the protection input.
5
Factory settings lost
yes
If calibration file is available, download the file and cycle
power again.
If controller still does not work or if no calibration file is
available, consult factory.
6
7
8
External pot out-of-range
no
Verify that pot is wired correctly.
Recalibrate external pot.
Accelerator position / idle
switch conflict
no
Verify that signals are working and synchronized.
Controller unit failed
yes
Electrical noise may be entering the controller.
Check wiring, shielding and connections to controller.
Cycle power to engine.
If controller still does not work, consult factory.
9
Limiting excessive
actuator current
no
no
Check actuator for short to ground or low resistance.
Check parameter settings.
Check linkage and actuator travel.
Ensure that load is not greater than engine capacity.
10
Engine speed input
signal missing
(Active only in Auto crank mode).
Check speed sensor wiring.
Check starter motor.
11
12
13
14
Auto crank unable to
start engine
no
no
no
no
Check fuel.
Auxiliary output is shorted
Check the lamp or relay hooked to the output. If fault is
still present, consult factory.
Auxiliary output #2 is shorted
Check the lamp or relay hooked to the output. If fault is
still present, consult factory.
Actuator disconnected or
open circuit
Check actuator wiring and actuator resistance.
Resistance should be less than 10 ohms.
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TESTING & TROUBLESHOOTING
9. At 2100-2200 psi/148-155 bar, the relief valve should be-
GENERAL
gin to open. The pressure at which the relief valve just be-
gins to open is commonly referred to as the "cracking pres-
sure". At the "cracking pressure," the flow rate should start
to drop because the relief valve is allowing fluid to bypass to
the hydraulic reservoir. The "cracking pressure" is preset at
the factory and if it is not within the above range, the relief
valve must be re-set as follows:
Tests and adjustments should be performed periodically
to ensure the power unit is operating at maximum ef-
ficiency. Stanley Circuit Tester (part number 04182) is
recommended. This tester can be used to isolate prob-
lems in both the engine and hydraulic system prior to
any power unit disassembly.
TESTING THE HYDRAULIC CIRCUIT
a. The relief valve is located on the right side of the unit just
behind the dash panel. It putrudes out from the manifold as-
sembly. Use a open end or box end wrench to loosen the nut
on the relief valve.
The following tests can be performed to ensure that the
hydraulic pump is supplying the correct flow and pres-
sure and that the system relief valve is operating prop-
erly.
b. Use an Allen wrench to adjust the relief valve. Turn clock-
wise to raise the pressure and counterclockwise to reduce
the pressure.
During these tests, make sure the engine is warm and
operating smoothly. If test results are not as specified,
refer to the troubleshooting table in this section for pos-
sible causes.
c. Tighten the nut and retest.
TESTING THE 5 GPM OR 10 GPM CIRCUIT
To test the circuit, proceed as follows:
1. Set the flow selector switches to the OFF (center) po-
sition.
2. Set the throttle control switch to AUTO-OFF position.
3. Connect the Stanley Circuit Tester across two hose
ends (where the tool would normally be connected).
4. Fully open the tester restrictor valve (counterclock-
wise).
5. Start the engine and allow it to run until warm.
6. Switch the flow selector switch to 5 or 10 gpm de-
pending on which flow you are testing.
7. With the engine at the programed speed, the test flow
gauge should read 4-6 gpm/15-23 lpm or 9-11 gpm/34-
41.6 lpm.
8. Slowly turn the restrictor valve clockwise while watch-
ing the pressure gauge. The flow rate should stay at 4-6
gpm/15-23 lpm or 9-11 gpm/34-41.6 lpm as the pressure
gauge reaches 2100-2200 psi/148-155 bar.
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TROUBLESHOOTING
PROBLEM
CAUSE
REMEDY
Engine will not start.
Flow selector switch not in the
OFF position.
Make sure both flow selector switches
are in the OFF position when starting.
Battery not connected.
Weak battery.
Attach battery cables, check wires.
Test battery, charge or replace.
Add Fuel.
No fuel.
Fuel filter plugged.
Defective spark plugs.
Replace fuel filter.
Remove plugs, check gap, clean or
replace.
Fluid blowing out of fluid
reservoir vent.
Hydraulic tank overfilled.
Pump suction leak.
Correct the fluid level.
Check suction connections. Tighten if
necessary.
Hydraulic tool won't operate.
Flow selector switch not switched
Check that the flow selector switch
ON.
is set to 5 or 10 gpm.
Incorrect hose connection to
tool.
Make sure the tool hose circuit goes
from left (pressure) fitting to tool
and back to the right fitting (return).
Fluid always flows from the male to
female fittings.
Quick disconnect fittings
defective.
Detach from hose, connect set
together and check for free flow.
Hydraulic fluid level low.
Pump coupling defective.
Check for correct fluid level. Fill
using the recommended fluid.
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.
Relief valve stuck open.
Adjust or replace valve.
Suction hose kinked.
Make sure suction hose from fluid
reservoir to pump inlet has a smooth
curve.
Solenoid not working.
Tool is defective.
Check solenoid operation and electrical
connections.
Refer to tool manual.
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SPECIFICATIONS
Engine: ............................................................................................................................18 hp Briggs / 20 hp Honda
Capacity (Flow)...............................................................Two 5 gpm/19 lpm Circuits or One 10 gpm/37.8 lpm Circuit
Length:................................................................................................................................................ 36 in. / 91.4 cm
Width: ................................................................................................................................................. 23 in: / 58.4 cm
Height:.............................................................................................................................................. 29.5 in. / 74.9cm
Weight (Wet): Dual Circuit Briggs...................................................................................................334 lbs / 151.5 kg
Weight (Wet): Dual Circuit Honda ..................................................................................................352 lbs / 159.6 kg
Fuel Tank Capacity:...........................................................................................................................5.5 gal. / 20.8 ltr
Estimated Gas Consumption Per Hour ...................................................................................................1.3 gal / 4 ltr
Hydraulic Reservor Capacity:.................................................................................................................. 3 gal. / 11 ltr
Nominal Operating Pressure..........................................................................................................1500 psi / 103 bar
Relief Valve "crack" setting.............................................................................................................2100 psi / 145 bar
Full relief setting .............................................................................................................................2500 psi / 172 bar
EHTMA Category........................................................................."C" (19 lpm @ 103 bar) or "E" (37.8 lpm @ 103 bar)
HTMA Category............”Type 1” (4-6 gpm /15-23 lpm @ 103 bar) or “Type RR” (9-10.5 gpm / 34-40 lpm @ 103 bar)
EMISSIONS
POWER UNITS,TRACHORSE & GAS/FUEL DRIVEN EQUIPMENT:
A1. Federal Emission Component Compliance 40CFR part 1060.120 Stanley warrants all fuel system emission com-
ponents for 2 years from the date of original purchase provided there has been no abuse, neglect, modifi cations, or
improper maintenance.
Components covered. The emission-related warranty covers all components whose failure would increase the evapora-
tive emissions. Your emissionrelated warranty does not cover components whose failure would not increase evapora-
tive 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.
GTR20 User Manual ◄ 19
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ACCESSORIES
ACCESSORIES
Coupler Male, 3/8 -8 SAE, Parker......................................................................................................................58857
Coupler Female, 3/8 -8 SAE, Parker..................................................................................................................58856
Coupler Male, 3/8 -8 SAE, Aeroquip..................................................................................................................66785
Coupler Female, 3/8 -8 SAE, Aeroquip..............................................................................................................66784
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
Wheel Kit (Converts a Skid Mount unit into a wheeled unit)..............................................................................73393
FILTERS
ENGINE
HYDRAULIC OIL
MODEL
FOAM AIR
FILTER
FILTER
OIL FILTER AIR FILTER FUEL FILTER
GTR20 BRIGGS
GTR20 HONDA
18384
40458
18382
40459
19947
40460
18383
40462
40408
40408
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GTR20 BRIGGS ILLUSTRATION
GTR20 User Manual ◄ 21
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GTR20 BRIGGS PARTS LIST
ITEM
P/N
QTY DESCRIPTION
ITEM
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
66
67
69
70
71
72
73
75
76
P/N
QTY DESCRIPTION
1
2
3
4
36150
36151
36152
59007
1
1
2
1
Muffler
15476
65068
21714
58942
01459
58975
18893
58976
31240
21318
59083
56655
60919
62385
371503
62324
62292
64991
56709
65042
69374
59074
68675
68560
68676
69401
69281
69282
62181
72451
72571
-----
1
1
2
3
4
2
4
4
2
2
1
1
1
2
1
1
2
1
1
1
1
2
1
1
1
1
4
1
1
3
1
1
2
1
Capscrew
Heat Shield
Screw, Hex Washer
Hex Flange Bolt
Handle Bumper
Hex Flange Bolt
Lockwasher
Briggs Engine (Includes Items
60 thru 70)
5
56656
07819
07860
31765
12787
24287
59076
20990
65108
00111
40080
43687
64937
51292
17821
60945
15476
59080
59091
07860
59077
62296
65107
59074
72312
40433
58897
58918
58917
27695
71794
60920
73050
04303
60921
1
1
2
1
4
1
1
1
1
3
1
1
1
1
4
2
2
1
1
2
1
2
1
4
1
9
1
2
1
1
1
1
1
1
1
Coupling
Foot
6
Square Key
Capscrew
Flang Nut
7
Hex Flange Bolt
Retaining Ring
Washer, 3/4
8
Pressure Switch
Flange Nut
Clamp
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
Blower Housing
Pump Mount
Bushing
Key
Fuel Elbow
Blower Hub
Capscrew
Stud
Nut
Filter Assy
Heat Shield
Capscrew
Hex Washer Head Screws
Screw
Grip Plate
Std Thread Union
Button Head HS
Washer
Cable Clamp
Rectifier Wire
Throttle Lever
Hex Flange Bolt
Angle Bracket Weldment
Rottary Actuator
Actuator Bracket
Wire Assembly
Hex Skt Head Capscrew 6-32
Hex Skt Head Capscrew 8-32
Link Retainer
Capscrew
Front Grille
Cooler
Capscrew, 3/8
Hydraulic Tank
Weather Strip
Blower Wheel-Brazed
Hex Flange Bolt
Engine Controller
Hex Flange Bolt
Frame Base Weldment
Wheel & Tire
Axle
Spring Hose Clamp
Fuel Vapor Hose
Supplied By Eng Manufacturer
Spring Hose Clamp
Hose (Fuel)
72317
62289
Pump, Dual
Fuel Cap
Grommet
Fuel Tank
Battery
Battery Cover
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GTR20 HONDA ENGINE ASSEMBLY
A wheel kit is available to convert a Skid Mount
unit to a wheeled unit P/N-73393.
GTR20 User Manual ◄ 23
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GTR20 HONDA PARTS LIST
ITEM
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
93
94
P/N
58976
31240
21318
59083
56655
60919
62385
371503
60972
49174
62185
62179
60945
60962
62181
62184
62183
62180
64990
65072
62182
-----
QTY DESCRIPTION
Hex Flange Bolt, 3/8-16
ITEM
1
P/N
QTY DESCRIPTION
4
2
2
1
1
1
2
1
2
1
1
1
1
1
2
1
1
1
1
1
1
--
1
1
1
2
2
1
3
3
2
1
1
2
1
-
38577
62292
---
1
2
-
Muffler Kit
Retaining Ring
Washer, 3/4
2
Hex Washer Head Screw
No Item
3
Blower Housing
Pump Mount
4
36918
56656
07819
07860
31765
12787
24287
59076
20990
65108
00111
40080
43687
64937
51292
17821
60945
15476
59080
59091
07860
59077
66791
62296
65107
59074
65482
65058
58897
58918
58917
27695
71794
60920
73050
04303
60921
15476
60945
40433
58942
01459
58975
18893
1
1
1
2
1
4
1
1
1
1
3
1
1
1
1
4
2
2
1
1
2
1
1
2
1
4
1
1
1
2
1
1
1
1
1
1
1
1
1
9
4
4
2
4
Honda Engine
Coupling
5
Fuel Elbow
6
Square Key
Stud
7
Capscrew, 3/8-16 x 1-1/4
Pressure Switch
Flange Nut, 5/16
Clamp
Nut
8
Hex Flange Bolt, M6 x 15
Screw, M8 x 30
Spring
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Bushing
Choke Pivot Weldment
Washer, 1/4 inch ID
HSHCS 1/4-20 x 1/2 inch
Link Retainer
Key
Blower Hub
Capscrew, 10-24
Filter Assy
Choke Link
Capscrew, M8 x 16
Grip Plate
Spring
Rotary Actuator
Spring, Torsion
Link Retainer
Std Thread Union
Button Head HS, 1/4 x 20
Washer, 1/4 in. ID
Capscrew, 1/2 -20 UNC
Front Grille
Throttle Link
No Item
64991
56709
62177
60970
60971
60948
60949
60950
60953
60957
---
Screw, M8 x 12
Cable Clamp
Cooler
Capscrew, 3/8-16
Hydraulic Tank
Hydraulic Tank (For Sight Gage)
Weather Strip
Blower Wheel-Brazed
Hex Flange Bolt, 1/4 -20
Engine Controller
Hex Flange Bolt
Frame Base Weldment
Wheel & Tire
Actuator Weldment
Hex Flange Bolt, M5 x 10
Flange Nut, 8-32
Stub Shaft
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
Washer
HSHCS, M8 x 55
Hex Flange Bolt, 1/4-20 x 1 inch
Rectifier Bracket
Rectifier (Part of Engine Assy)
Flange Nut, 1/4-20
Wire Harness
59095
37294
---
Axle
Pump, Dual
No Item
Fuel Cap
62404
62405
37222
00899
62325
21714
66788
72848
72846
72317
72242
1
1
1
3
1
2
1
2
1
2
1
Mag Kill Wire
Grommet
Fuel Shutoff Wire
Exhaust Shield
HHCS 1/4-20 UNC x .500
Heat Shield
Fuel Tank
Battery
Battery Cover
Capscrew, 1/4-20
Washer, 1/4
Handle Bumper
Sight Gage
Hex Flange Bolt, 5/16
Hex Flange Bolt, 5/16
Lockwasher, 3/8
Foot
Spring Hose Clamp
Fuel Vapor Hose
Spring Hose Clamp
Fuel Hose
Flang Nut, 3/8-16
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FRAME PARTS
28
26
7
29
17
*
27
24
23
31
22
25
33
34
12-VOLT PLUG WIRING HARNESS
Receptacle Assy 64942
TO STARTER
SOLENOID
12 VOLT ACCESSORY NOT EQUIPPED
ON ALL MODELS.
RED
GROUND
25 AMP FUSE
AVAILABLE AS AN ADD-ON
BLACK
* IF ADDING 12 VOLT ACCESSORY,
CUT AWAY LABEL AND PUNCH
THROUGH DASH PANEL
ITEM
P/N
QTY DESCRIPTION
12-VOLT RECEPTACLE
1
2
3
4
370502
03906
62267
58857
66785
58856
66784
60962
59084
59085
7
7
1
2
2
2
2
2
1
1
Capscrew
ITEM
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
P/N
23530
58916
62268
59079
59095
59127
350041
59131
08104
59128
62319
--
QTY DESCRIPTION
Hex Flange Bolt, 3/8 in. -16
Nylock Nut, 5/16 in. -18 UNC
Handle, Rear Lift
2
1
2
1
2
1
1
2
1
1
2
2
2
1
1
1
1
1
Handle Lock
Coupler, Male, 3/8 in., -8 SAE Parker
Coupler, Male, 3/8 in., -8 SAE Aeroquip
Coupler, Female, 3/8 in., -8 SAE Parker
Coupler, Female, 3/8 in., -8 SAE Aeroquip
Capscrew, 1/4 in. -20
Lift Handle
Cooler Guard
5
Flange Nut, 1/4 in. -20
Shuttle Check Valve
Hollow Hex Plug 4 SAE
Relief Valve
6
7
Manifold Dual Circuit
Manifold Assy, Dual Circuit (Incl. 22-29, 31,
33, 34)
Hollow Hex Plug 6 SAE
Pressure Switch Assy
Directional Valve
Cap (Included with Item 27)
Coil
8
59126
59074
59125
67899
60955
67899
60956
60946
62269
1
6
1
1
1
1
2
1
1
Dash Decal
9
Hex Flange Bolt, 1/4 in. -20
Decal, Dual Circuit
Knob (part of item 13)
2-Way Switch
10
11
12
13
14
15
16
60958
64942
60960
62298
62320
---
12 volt Receptacle Assy
Combiner Valve
Rotary Switch
3-Way Switch
Choke Cable Assy
Solenoid Coil
Hour Meter
Frame Weldment
Nut, Incl. with Item 31
GTR20 User Manual ◄ 25
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FUEL TANK & CAP
NOTE: When ordering a fuel tank (item 37)
or fuel tank cap (item 35) DO NOT MIX OLD
STYLE TANK AND CAP WITH NEW STYLE
TANK AND CAP.
If you have a power unit and it was purchased
prior to 2011 and need to replace the fuel tank or
fuel tank cap, you must purchase the same tank
and cap that came with your unit.
For example if you have a power unit prior to
2011 do not purchase a new style fuel tank, your
engine will not be equipped with a fuel vapor
fitting.
The old style fuel cap is a vented cap, while the
new style fuel cap is not a vented cap and vent-
ing is achieved thru the vapor line.
The old style fuel tank has only one fuel line
coming from the tank to the engine. The new
style fuel tank has two lines coming from the fuel
tank to the engine, one is the fuel line and the
other is a fuel vapor line.
P/N-73050
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HOSES, FITTINGS & CLAMPS
1
4
7
8
9
3
2
3
5
6
3
10
11
3
12
ITEM
P/N
QTY
1
DESCRIPTION
1
2
59085
59104
62199
350000
02773
58569
58943
350104
40364
59089
59106
59105
Manifold Assy, Dual Circuit
Hose Barb, 3/4 in. Hose x 3/4 in. Pipe
Hose Clamp
1
3
4
4
2
Elbow, 45° Straight Thread
Adapter
5
1
6
1
Elbow, 90°
7
2
Hose
8
2
Connector, Straight Thread
Elbow, 45°
9
1
10
11
12
1
Hose, Return Briggs Engine
Hose, Return Honda Engine
Hose Barb, 3/4 in. Hose x 3/4 in. Pipe
1
1
GTR20 User Manual ◄ 27
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MAIN WIRING HARNESS
RED WIRE (P TERMINAL)
ORANGE WIRE (S TERMINAL)
YELLOW WIRE (I TERMINAL)
ENGINE OIL PRESS SWITCH
WIRING DETAIL
28 ► GTR20 User Manual
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DUAL CIRCUIT WIRE HARNESS
GTR20 User Manual ◄ 29
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Stanley Hydraulic Tools
3810 SE Naef Road
Milwaukie, Oregon 97267-5698 USA
(503) 659-5660 / Fax (503) 652-1780
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