Test Or Replace The Hydraulic Oil - Genie Z-25/8 Service Manual

Section 4 • Scheduled Maintenance Procedures
Table D Procedure
D-1

Test or Replace the Hydraulic Oil

Replacement or testing of the hydraulic oil is
essential for good machine performance and
service life. Dirty oil and suction strainers may
cause the machine to perform poorly and
continued use may cause component damage.
Extremely dirty conditions may require oil changes
to be performed more often.
The machine uses Dexron
equivalent hydraulic oil. Before
replacing the hydraulic oil, the oil
may be tested by an oil distributor
for specific levels of contamination
to verify that changing the oil is
necessary. If the hydraulic oil
is not replaced at the two year
inspection, test the oil quarterly.
Replace the oil when it fails the
test.
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 Two, Hydraulic
Hose and Fitting Torque
Specifications.
Perform this procedure with the
boom in the stowed position and
the jib boom rotated to one side.
4 - 22 Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
1 Locate the drain hose underneath the hydraulic
tank. Remove the drain plug from the drain
hose.
2 Completely drain the tank into a suitable
container. See capacity 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.
3 Open the battery trays on each side of the
machine.
4 Disconnect the battery packs at the quick
disconnect plugs.
5 Tag and disconnect the battery cables from the
auxiliary power unit located at the steer end of
the component tray.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
6 Locate the negative battery cable that goes
from the auxiliary power unit to the motor
controller.
First Edition • Third Printing
Part No. 41314