Perform Hydraulic Oil Analysis; Inspect The Breather Cap - Genie GR-20J Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST B PROCEDURES
B-12

Perform Hydraulic Oil Analysis

Genie specifications require that this procedure be
performed every 250 hours or quarterly, 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
often. Refer to Section 2, Specifications .
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. See E-1, Test or
Replace the Hydraulic Oil.
3 - 20
B-13

Inspect the Breather Cap

Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first. Perform this procedure more often if
dusty conditions exist.
A free-breathing hydraulic tank cap is essential for
good machine performance and service life. A dirty
or clogged cap may cause the machine to perform
poorly. Extremely dirty conditions may require that
the cap be inspected more often.
1 Open the turntable cover at the hydraulic power
unit side of the machine.
2 Locate and remove the breather cap from the
hydraulic tank.
3 Check the breather cap for proper venting.
Result: Air passes through the breather cap.
Proceed to step 5.
Result: If air does not pass through the cap,
clean or replace the cap. Proceed to step 4.
Note: When checking the hydraulic tank breather
cap for venting, air should pass freely through the
cap.
4 Using a mild solvent, carefully wash the cap
venting system. Dry using low pressure
compressed air. Repeat this procedure
beginning with step 3.
5 Install the breather cap onto the hydraulic tank.
GR-20J • GR-26J
September 2016
Part No. 227656