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Genie GS-2046 and GS-2646 and GS-3246
Part No. 72972
June 2003
Section 4 • Repair Procedures
REV B
6-5
Valve Adjustments -
Function Manifold
How to Adjust the
System Relief Valve
(before serial number 36045)
Be sure that the hydraulic oil level
is between the
FULL
and
ADD
marks
on the oil level indicator decal.
1 Open the hydraulic power unit module tray and
locate the system relief valve on the function
manifold (item AF).
2 Place maximum rated load into the platform.
Secure the load to the platform. Refer to
Section 2,
Specifications.
3 Turn the key switch to ground control and pull
out the Emergency Stop button to the on
position at both the ground and platform
controls.
4 Hold the system relief valve with a wrench and
remove the cap (item AF).
a
system relief valve
b
function manifold
MANIFOLDS
5 While activating the platform up function, adjust
the internal hex socket clockwise to increase lift
capacity or counterclockwise to decrease lift
capacity. Adjust the relief valve until the
platform just begins to raise.
6 Fully lower the platform.
7 Add an additional 100 pounds / 45.4 kg to the
platform. Secure the additional weight.
8 Activate the platform up function.
Result: The power unit should not be able to lift
the platform.
Result: If the power unit lifts the platform, adjust
the internal hex socket counterclockwise until
the platform will not raise.
Tip-over hazard. Do not adjust the
relief valve to allow the power unit
to lift more than maximum rated
load.
9 Install the relief valve cap.
10 Remove the weight from the platform.
11 Bleed the hydraulic system. Raise the platform
to full height, and then lower it to the stowed
position through two complete cycles.
Result: If the pump cavitates or platform fails to
reach full height, add hydraulic oil until the
pump is functioning correctly. Do not overfill the
hydraulic reservoir.
Component damage hazard. Do
not continue to operate the
machine if the hydraulic pump is
cavitating. If the pump is still
cavitating, see 5-1,
How to Test
the Hydraulic Pump.
12 Re-test the system by performing steps 8
through 11.
800-610-4101
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Summary of Contents for GS-2046
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