Service and Repair Manual
October 2018
Hydraulic Pumps
118
Z®-135
/70
Part No. 1268557GT
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
be performed at an authorized Sauer-Danfoss
service center. Contact Genie Product Support to
locate your local authorized service center.
How to Remove the Drive Pump
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.
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
Disconnect the wiring plug at the electronic
displacement controller (EDC), located on the
drive pump.
2
Locate the two hydraulic tank valves at the
hydraulic tank. Close the valves.
open
closed
Component damage hazard.
The engine must not be started
with the hydraulic tank shut-off
valves in the closed position or
component damage will occur. If
the tank valves are closed,
remove the key from the key
switch and tag the machine to
inform personnel of the
condition.
3
Tag, disconnect and plug the hydraulic hoses
from the drive and function pumps. Cap the
fittings on the pumps.
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.
4
Support the pumps with a suitable lifting device
and remove the two drive pump mounting
fasteners.
Содержание Genie Z-135/70
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Страница 229: ...October 2018 Service and Repair Manual 215 Perkins 1104C 44 and 804D 33T Engine Electrical Schematic ...
Страница 232: ...Service and Repair Manual October 2018 218 Cummins B4 5L and B3 3T Engine Electrical Schematic ...
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