Checklist E Procedures; Test Or Replace The Hydraulic Oil - Genie ZX-135/70 Service Manual

Service Manual

Checklist E Procedures

E-1

Test or Replace the Hydraulic Oil

Genie specifications require that this procedure be
performed every 2000 hours or every two years,
whichever comes first.
Perform this procedure more often if dusty
conditions exist.
Replacement or testing of the hydraulic oil is
essential for good machine performance and
service life. Dirty oil and a clogged suction strainer
or hydraulic filters 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: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications, Hydraulic Hose and Fitting Torque
Specifications.
Note: Perform this procedure with the boom in the
stowed position.
74
1 Close the two hydraulic tank shut-off valves at
the hydraulic tank.
2 Remove the drain plug from the hydraulic tank
and completely drain the tank into a container
of suitable capacity. Refer to Specifications,
Fluid Capacity Specifications.
3 Tag, disconnect and plug the two suction
hoses from the hydraulic tank.
4 Tag, disconnect and plug the two supply
hoses for the auxiliary power units. Cap the
fittings on the hydraulic tank.
5 Tag, disconnect and plug the hydraulic hose
from the drive motor case drain filter at the
hydraulic tank. Cap the fitting on the hydraulic
tank.
6 Disconnect and plug the hydraulic hose at the
return filter. Cap the fitting on the return filter
housing.
ZX-135/70
August 2014
Component damage hazard.
The engine must not be started
with the hydraulic tank shut-off
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.
Part No. 218700