C Checklist E Procedures; Test Or Replace The Hydraulic Oil - Genie GTH-636 Service Manual

June 2007
REV C
E-1

Test or Replace the Hydraulic Oil

Note: Genie specifications require that this
procedure be performed every 2000 hours or two
years, whichever comes first
Replacement or testing of the hydraulic oil is
essential for good machine performance and
service life. Dirty oil 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. Refer to Section 2, Specifications .
Component damage hazard. The
work area and surfaces where this
procedure will be performed must
be clean and free of debris that
could get into the hydraulic
system.
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.
1 Lower the boom to the stowed position.
2 Remove oil cap from top of hydraulic tank.
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Section 3 • Scheduled Maintenance Procedures
Checklist E Procedures
3 Using an approved hand-operated pump, drain
the hydraulic tank into a suitable container.
Refer to Section 2, Specifications .
4 Remove the drain plug from the rear of the tank.
5 Rinse out the inside of the tank using a mild
solvent.
6 Install the drain plug and securely tighten. Do
not over tighten.
7 Fill the tank with hydraulic oil until the fluid level
is in the center of the sight glass at the rear of
the tank.
8 Clean up any oil that may have spilled.
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
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