Checklist E Procedures; Test Or Replace The Hydraulic Oil - Genie TMZ-50/30 Service Manual

June 2005
800-610-4101
ActionRental.com
REV B
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.
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.
1 Disconnect the battery pack from the machine.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
Part No. 65162
Section 3 • Scheduled Maintenance Procedures

Checklist E Procedures

2 Remove the drain plug from the hydraulic tank
and allow all of the oil from the tank to drain into
a suitable container. Refer to Section 2,
Specifications.
3 Tag and disconnect the hydraulic hose from the
return filter to the tank. Cap the fitting on the
filter head.
4 Remove the return filter mounting fasteners.
Lay the filter off to the side.
5 Remove the hydraulic tank mounting fasteners
and remove the hydraulic tank from the
machine.
7 Remove the suction strainer and clean it using
a mild solvent.
8 Clean the inside of the tank using a mild
solvent.
9 Install the suction strainer into the tank and
securely tighten.
10 Install and tighten the hydraulic tank drain plug
using a thread sealant on the threads. Torque
to specification.
Torque specifications
Hydraulic tank drain plug, dry
Hydraulic tank drain plug, lubricated
TMZ-50/30
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
75 in-lbs
8.5 Nm
56 in-lbs
6.3 Nm
3 - 31