Test Or Replace The Hydraulic Oil - Genie S-80 Service Manual

Section 4 - Scheduled Maintenance Procedures
Table D Procedures
D-1

Test or Replace the Hydraulic Oil

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 often.
The machine uses Dexron II
equivalent hydraulic oil. 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, quarterly testing
(B-25) thereafter should be
completed.
Perform this procedure with the
boom in the stowed position.
1 Close the two hydraulic shutoff valves located
at the hydraulic tank.
open
Component damage hazard. The
engine must not be started with
the hydraulic tank shutoff valves
in the
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.
4 - 38
closed
position or
CLOSED
Genie S-80 & Genie S-85
Service Manual - First Edition
2 Remove the drain plug from the hydraulic tank.
3 Completely drain the tank into a suitable
container. See capacity specifications listed
below.
4 Disconnect and cap the two suction hoses
that are attached to the hydraulic tank
shutoff valves.
5 Remove the strainer assemblies from the tank.
6 Carefully clean any foreign material from
the strainers. Clean the strainers from the
inside out.
7 Apply pipe thread sealant to the strainer
mounting threads, and then install them.
8 Apply pipe thread sealant to the drain plug,
and then install it in the tank.
9 Install the two suction hoses.
10 Fill the tank with hydraulic oil until the level is
within the top 2 inches (5 cm) of the sight
gauge. Do not overfill.
11 Clean up any oil that may have spilled and
open the hydraulic tank valves.
12 Prime the pump by doing the following:
Connect a 0 to 600 psi (0 to 41 bar) pressure
gauge to the test port on the drive pump.
Gasoline/LPG models:
Remove the high tension lead from the center
of the ignition coil.
Electrocution hazard. Contact with
electrically charged circuits may
cause death or serious injury.
Remove all rings, watches and
other jewelry.
Part No. 34032