Genie GS-1530 Service And Repair Manual page 85

September 2016
How to Adjust the
Lift Pressure Selector Valve
(GS-4047 only)
Note: The System Relief Valve and Platform Lift
Relief Valve must be adjusted before making an
adjustment to the Lift Pressure Selector Valve.
Refer to Repair Procedures, How to Adjust the
System Relief Valve and How to Adjust the
Platform Lift Relief Valve.
Note: Perform this test from the ground with the
platform controls. Do not stand in the platform.
Note: Verify the hydraulic oil level is at the FULL
mark on the hydraulic tank.
1 Locate the pressure selector relief valve on
the pressure selector manifold (schematic
item DM).
2 Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the test port on the function
manifold (schematic item DA).
GS-32, GS-46 and GS-47
1 test port
2 system relief valve
3 steer relief valve
4 lift relief valve
Part No. 1272217
3
Maximum load, GS-4047
GS-4047
(CE and AS models)
GS-4047
(ANSI and CSA models)
4
5
6
7
GS-30 • GS-32 • GS-46 • GS-47
Service and Repair Manual
Using a suitable lifting device, place and
secure the maximum rated load in the center
of the platform deck.
Remove the platform controls from the
platform.
Turn the key switch to platform controls and
pull out the red Emergency Stop button to the
on position at both ground and platform
controls.
Press and hold the lift function enable button
and the press the platform up button to raise
the platform 4 ft / 1.2 m above the stowed
position.
Result: The platform does not rise. Perform
steps 7 through 10 to increase the pressure in
small increments until the platform rises. Then
proceed to step 12.
Result: The platform rises. Perform steps
7 through 10 to decrease the pressure in small
increments until the platform does not rise.
Then follow steps 7 through 10 again to
increase the pressure in small increments until
the platform is able to rise.
Turn the machine off. Hold the lift pressure
selector valve with a wrench and remove the
cap (schematic item DM).
GS-4047
1 lift pressure selector valve
2 solenoid valve
Manifolds
770 lbs
350 kg
550 lbs
250 kg
69