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April 2018
Service and Repair Manual
Hydraulic Pump
Part No. 1287211GT
GTH-1056
45
6-1
Hydraulic Pump
How to T est the Function Pum p
How to Test the Function Pump
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1 Tag, disconnect and plug the high pressure
hydraulic hose from the primary function
manifold. Cap the fitting on the main valve.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
Note: The high pressure hose is the smaller of the
two hoses.
2 Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the high pressure hose
disconnected in step 1.
3 Hold the manual fuel shut-off lever on the
engine in the closed position.
4 Observe the pressure gauge while cranking
the engine in one second intervals.
Result: If the pressure gauge reads 3190 psi /
220 bar, immediately stop. The pump is good.
Result: If the pressure fails to reach 3190 psi /
220 bar, the pump needs to be adjusted OR or
the pump or pump coupling is faulty and will
need to be serviced or replaced.
Component damage hazard.
There is no relief valve in the
hydraulic pump and the pump
can be damaged if the pressure
is allowed to exceed
specification. When testing the
pump, crank the engine in one
second intervals until the
correct pressure is confirmed.
Do not over-pressurize the
pump.
5 Remove the pressure gauge and install the
high pressure hose onto the pump. Torque to
specification. Refer to Specifications,
Hydraulic Hose and Fitting Torque
Specifications
.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
Summary of Contents for Genie GTH1056
Page 63: ...April 2018 Service and Repair Manual Manifolds Part No 1287211GT GTH 1056 53 ...
Page 65: ...April 2018 Service and Repair Manual Manifolds Part No 1287211GT GTH 1056 55 ...
Page 115: ...April 2018 Service and Repair Manual 105 Harness Map Harness Legend ...
Page 118: ...Service and Repair Manual April 2018 108 Harness Map Control System Electronic Joystick ...
Page 119: ...April 2018 Service and Repair Manual 109 Harness Map Deutz T4F Engine ...
Page 122: ...Service and Repair Manual April 2018 112 Harness Map Deutz T3 Engine ...
Page 123: ...April 2018 Service and Repair Manual 113 Harness Map Perkins T4i Engine ...
Page 126: ...Service and Repair Manual April 2018 116 Harness Map Perkins T3 Engine ...
Page 127: ...April 2018 Service and Repair Manual 117 Harness Map Road Lights ...
Page 128: ...Service and Repair Manual April 2018 118 GTH 1056 Part No 1287211GT Harness Map Road Lights ...
Page 129: ...April 2018 Service and Repair Manual Part No 1287211GT GTH 1056 119 Harness Map Work Lights ...
Page 130: ...Service and Repair Manual April 2018 120 Harness Map Work Lights ...
Page 131: ...April 2018 Service and Repair Manual 121 Harness Map Deutz HVAC Option ...
Page 134: ...Service and Repair Manual April 2018 124 Harness Map Perkins HVAC Option ...
Page 135: ...April 2018 Service and Repair Manual 125 Harness Map Enclosed Cab Heater ...
Page 138: ...Service and Repair Manual April 2018 128 Harness Map Proximity Sensor Beacon Lockout Options ...
Page 139: ...April 2018 Service and Repair Manual 129 Electrical Schematic View 1 ...
Page 142: ...Service and Repair Manual April 2018 132 Electrical Schematic View 2 ...
Page 143: ...April 2018 Service and Repair Manual 133 Electrical Schematic Deutz T4F Eng Harness ...
Page 146: ...Service and Repair Manual April 2018 136 Electrical Schematic Deutz T4F Eng Harness ...
Page 147: ...April 2018 Service and Repair Manual 137 Electrical Schematic Deutz T4F Eng Harness ...
Page 150: ...Service and Repair Manual April 2018 140 Electrical Schematic Deutz T3 Eng Harness ...
Page 151: ...April 2018 Service and Repair Manual 141 Hydraulic Schematic ...
Page 152: ...Service and Repair Manual April 2018 142 GTH 1056 Part No 1287211GT Hydraulic Schematic ...
Page 153: ...April 2018 Service and Repair Manual Part No 1287211GT GTH 1056 143 Hydraulic Schematic ...
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