Checklist E Procedure; Test Or Replace The Hydraulic Oil - Genie GR-20J Service Manual

September 2016
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.
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.
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 machine in
the stowed position.
1 Open the turntable covers of the machine.
2 Disconnect the battery pack from the machine.
Electrocution/burn hazard. Contact
with electrically charged circuits
could result in death or serious
injury. Remove all rings, watches
and other jewelry.
3 Remove the fasteners securing the chassis side
cover next to the tank to the chassis. Remove
the side cover. Lay the side cover and
fasteners to the side.
Part No. 227656
Section 3 • Scheduled Maintenance Procedures

Checklist E Procedure

4 Place a suitable container under the hydraulic
tank. Refer to Section 2, Specifications.
5 Locate and remove the hydraulic tank filler cap.
Set the filler cap to the side.
6 Remove the drain plug and drain all of the oil
into a suitable container.
7 Clean up any oil that may have spilled. Properly
discard the used oil.
Note: To clean the inside of the hydraulic tank
using a mild solvent, it may be helpful to remove
the hydraulic power unit from the tank. Refer to
Repair Procedure 6-1, How to Remove the
Function Pump.
8 Install the drain plug onto the hydraulic tank and
torque to specification.
Torque specification
Hydraulic tank drain plug
9 Fill the tank with hydraulic oil until the fluid is at
the full indicator on the hydraulic tank. Do not
overfill.
10 Install the filler cap onto the hydraulic tank, and
securely tighten. Do not over tighten.
11 Activate the pump to fill the hydraulic system
with oil and bleed the system of air.
GR-20J • GR-26J
Component damage hazard. The
pump can be damaged if operated
without oil. Be careful not to empty
the hydraulic tank while in the
process of filling the hydraulic
system. Do not allow the pump to
activate.
44 in-lbs
5 Nm
3 - 27