January 2020
Part No. 1268514GT
Z
®
-33/18
3-31
Section 3 • Repair Procedures
The function pump motor operates at various
speeds, depending on the flow and pressure
required for the machine function selected. A
speed sensor, built into the pump motor, enables
the control system to monitor and control the
speed of the pump motor, which controls the flow
output of the 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 Open the hydraulic tank side turntable cover.
2 Tag and disconnect the cables from the
function pump.
WARNING
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
3 Place a suitable container under the hydraulic
tank. Refer to Section 2,
Specifications
.
WARNING
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
HYDRAULIC PUMPS
4 Remove the drain plug from the hydraulic tank.
Completely drain the hydraulic tank into a
container of suitable capacity.
5 Tag, disconnect and plug the hydraulic hoses
from the function pump. Cap the fittings on the
pump.
WARNING
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.
6 Remove the function pump mounting bolts.
7 Carefully remove the pump.
Содержание Genie Z-33/18
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