Checklist E Procedures; Test Or Replace The Hydraulic Oil - Genie S-105 Service Manual

Section 3 • Scheduled Maintenance Procedures

Checklist E Procedures

E-1

Test or Replace the Hydraulic Oil

Genie specifications require that this procedure be
performed every 2000 hours or 2 years, whichever
comes first.
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 frequently.
Note: 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.
Note: Perform this procedure with the boom in the
stowed position and the axles extended.
Note: 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 Remove the ground controls side turntable side
cover. Refer to Repair Section 5-1, How to
Remove a Hinged Turntable Cover.
open
3 - 62
closed
S-100 • S-105 • S-120 • S-125
2 Close the two hydraulic shut-off valves located
at the hydraulic tank.
Component damage hazard. The
engine must not be started with the
hydraulic tank shutoff 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 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.
4 Remove the ground controls support bracket
retaining fasteners and remove the ground
control box assembly from the machine.
Component damage hazard.
Be sure to properly support the
ground control box. Do not allow
the ground control box to hang by
the wiring or cables.
5 Tag and disconnect the wires from the horn.
Remove the horn retaining fasteners and
remove the horn from the machine.
6 Tag, disconnect and plug the two suction hoses
that are attached to the hydraulic tank shut-off
valves. Cap the fittings.
7 Tag, disconnect and plug the supply hose for
the auxiliary power unit. Cap the fitting on the
hydraulic tank.
8 Tag, disconnect and plug the case drain hose at
the return filter. Cap the fitting on the return filter
head.
9 Disconnect and plug the T-fitting located at the
return filter with the 2 hoses connected to it.
Cap the fitting on the return filter head.
June 2011
REV C REV B
Part No. 102916