Service and Repair Manual
April 2017
Manifolds
70
GS-30 • GS-32 • GS-46 • GS-47
Part No. 1272217
8 Adjust the internal hex socket. Turn it
clockwise to increase the pressure or
counterclockwise to decrease the pressure.
Tip-over hazard. Failure to adjust
the relief valves to specification
could result in the machine
tipping over, causing death or
serious injury. Do not adjust the
relief valve pressures higher
than specifications.
9 Install the relief valve cap.
10 Fully lower the platform to the stowed position.
11 Using a suitable lifting device, add and secure
an additional 150 lbs / 68 kg to the platform
deck.
12 Raise the platform.
Result: The platform does not rise. Proceed to
step 13.
Result: The platform rises. Perform steps
7 through 10 to decrease the pressure in small
increments until the platform does not rise.
13 Fully lower the platform to the stowed position.
14 Using a suitable lifting device, remove the
weight from the platform.
How to Adjust the Steer 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 steer relief valve on the function
manifold (schematic item G, AH or DH).
2 Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the test port on the function
manifold (schematic item A, AA or DA).
3 Remove the platform controls from the
platform.
4 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.
GS-1530/32 and GS-1930/32
1 test port
2 steer relief valve
