Checklist E Procedure; Test Or Replace The Hydraulic Oil - Genie TZ-34/20 Service Manual

Section 3 • Scheduled Maintenance Procedures

Checklist E Procedure

E-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.
Note: Before replacing the hydraulic oil, the oil may
be tested by an oil distributor for specifi c 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.
Note: Perform this procedure with the boom in the
stowed position.
1 Open the power unit module tray.
2 Disconnect the battery pack from the machine.
Electrocution hazard. Contact
with hot or live circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
3 - 28
3 Remove the drain plug from the power unit
valve body and completely drain the tank
into a suitable container. Refer to Section 2,
Specifi cations, for capacity information.
4 Tag and disconnect the wire harness from the
valve coils on the power unit.
5 Tag and disconnect the wire harness from the
motor controller and 275A fuse.
6 Pull the trailer wiring harness through the
power unit module bulkhead.
Genie TZ-34/20
January 2016
Power unit components
a breather cap
b hydraulic tank
c fi ller cap
d hand pump
e sight gauge (hidden from view)
f hydraulic pump
g motor
h drain plug
i hydraulic fi lter
Part No. 825934