Replace The Hydraulic Tank Return Filter - Genie GS-3390 Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST D PROCEDURES
5 Remove the filter element from the housing.
6 Inspect the housing seal and replace it if
necessary.
7 Install the new filter and hand tighten the
housing onto the filter head.
8 Locate the high pressure hydraulic filter
mounted next to the function manifold.
9 Remove the filter housing using a filter wrench.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to squirt
or spray.
10 Remove the filter element from the housing.
11 Inspect the housing seal and replace it if
necessary.
12 Install the new filter element and hand tighten
the housing onto the filter head.
13 Use a permanent ink marker to write the date
and number of hours from the hour meter on
the filters.
14 Start the engine from the ground controls.
15 Inspect the filter assembly to be sure that there
are no leaks.
16 Clean up any oil that may have spilled during
the installation procedure.
3 - 36

Replace the Hydraulic Tank Return Filter

1 Open the function manifold tray door.
2 Locate the hydraulic tank return filter located
behind the ladder.
Note: The hydraulic filter is mounted on the
function manifold next to the hydraulic power unit.
3 Remove the filter with an oil filter wrench. Clean
the area where the hydraulic oil filter meets the
filter head.
4 Apply a thin layer of oil to the new oil filter
gasket.
5 Install the new filter and tighten it securely by
hand.
6 Use a permanent ink marker to write the date
and number of hours from the hour meter on
the filter.
7 Clean up any oil that may have spilled during
the replacement procedure.
8 Turn the key switch to ground controls and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
9 Start the engine from the ground controls.
10 Hold the function enable toggle switch in the up
direction and activate the platform up function.
11 Inspect the filter and related components to
be sure that there are no leaks.
GS-3390 • GS-4390 • GS-5390
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to squirt
or spray.
Part No. 72863
July 2007
REV E