Section 4 • Repair Procedures
November 2014
4 - 48
GS-2669 RT • GS-3369 RT • GS-4069 RT
Part No. 229753
Hydraulic Pump
8-1
Hydraulic Pump
The hydraulic pump is a single section, gear-type
pump.
Note: When removing a hose assembly or fitting,
the O-ring on the fitting and/or hose must be
replaced and then torqued to specification during
installation. Refer to Section 2,
Hydraulic Hose and
Fitting Torque Specifications
.
How to Test the Hydraulic Pump
1 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to test port #1 (item FF) on the function
manifold.
2 Remove the platform controls from the platform
and place the controls near the function
manifold on the tank side of the machine.
3 Start the engine from the platform controls.
4 Steer the machine fully to the right or left and
hold. Note the pressure readings on the
pressure gauge. Refer to Section 2,
Specifications
.
How to Remove the
Hydraulic Pump
1 Tag, disconnect and plug the hydraulic hoses on
the pump.
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.
2 Remove the pump mounting bolts. Carefully
remove the pump.
After replacing the hydraulic
pump, it is critical to return the lift
and drive speed settings to
original factory specifications.
Refer to Section 3,
Scheduled
Maintenance Procedures
.
Содержание GS-2669 RT
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