Hydraulic Pumps; Lift/Steer Pump; Drive Pump - Genie Z-60/34 Service Manual

November 2003
REV A
7-1

Lift/Steer Pump

How to Remove the
Lift/Steer Pump
When removing a hose assembly
or fitting, the O-ring on the fitting
and/or hose end must be replaced
and then torqued to specification
during installation.
Refer to Section 2, Hydraulic Hose
and Fitting Torque Specifications.
1 Remove the drain plug from the hydraulic tank
and completely drain the tank into a suitable
container. See capacity specifications.
2 Tag, disconnect and plug the lift/steer pump
hydraulic hoses. Cap the fittings 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.
3 Remove the pump mounting bolts. Carefully
remove the pump.
Component damage hazard. Be
sure to fill the hydraulic tank to
specification and prime the pump
after installing the pump.
Part No. 75861

Hydraulic Pumps

7-2

Drive Pump

The drive pump is a bi-directional variable
displacement piston pump. The pump output is
controlled by the electronic displacement controller
(EDC), located on the pump. The only adjustment
that can be made to the pump is the neutral or null
adjustment. Any internal service to the pump
should only be performed at an authorized Rexroth
service center. Call Genie Industries Service
Department to locate your local authorized service
center.
How to Remove the Drive Pump
1 Disconnect the electrical connection at the
electronic displacement controller (EDC)
located on the drive pump.
Genie Z-60/34
Section 4 • Repair Procedures
Component damage hazard. The
work area and surfaces where this
procedure will be performed must
be clean and free of debris that
could get into the hydraulic system
and cause severe component
damage. Dealer service is
recommended.
When removing a hose assembly
or fitting, the O-ring on the fitting
and/or hose end must be replaced
and then torqued to specification
during installation.
Refer to Section 2, Hydraulic Hose
and Fitting Torque Specifications.
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