Hydraulic Tank - Genie GS-3390 Service Manual

July 2007
REV C
8-2

Hydraulic Tank

The primary functions of the hydraulic tank are to
cool, clean and deaerate the hydraulic fluid during
operation. It utilizes internal suction strainers for
the pump supply lines and has an external return
line filter with a filter condition indicator.
How to Remove the
Hydraulic Tank
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: When removing a hose assembly or fitting,
the O-ring on the fitting and/or hose end must be
replaced and then torqued to specification during
installation. Refer to Section Two, Hydraulic Hose
and Fitting Torque Specifications.
1 Turn the key switch to ground control and pull
out the red Emergency Stop buttons to the
position at both the ground and platform
controls.
2 Start the engine and raise the platform
approximately 18 feet / 5.5 m from the ground.
3 Before serial number 40351: Release the
safety arm latch, lift the safety arm and rotate
down to a vertical position.
After serial number 40350: Release the safety
arm latch, lift the safety arm and rotate to a
vertical position. Lock the safety arm in
position.
Note: Be sure that the safety arm is locked in the
vertical position.
Part No. 72863
4 Lower the platform onto the safety arm. Turn
the engine off.
5 Attach a lifting strap from an overhead crane to
the entry ladder on the hydraulic tank side of
the machine.
6 Remove the entry ladder mounting fasteners.
Remove the entry ladder from the machine.
7 Remove the retaining fasteners from the access
plate located behind the hydraulic and fuel tank
tray.
8 Close the two hydraulic shutoff valves located
at the hydraulic tank (if equipped).
ON
GS-3390 • GS-4390 • GS-5390
Section 4 • Repair Procedures
FUEL AND HYDRAULIC TANKS
Crushing hazard. Keep hands
clear of the safety arm when
lowering the platform.
Crushing hazard. The entry ladder
could become unbalanced and fall
when it is removed from the
machine if it is not properly
supported.
open closed
Component damage hazard. The
engine must not be started with
the hydraulic tank shutoff valves in
the position or component
CLOSED
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.
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