REV F
February 2009
Section 4 • Repair Procedures
4 - 98
GS-30 • GS-32 • GS-46
Part No. 97385
c
a
b
d
MANIFOLDS
a
b
How to Adjust the Steer Relief
Valve
Perform this test from the ground with the platform
controls. Do not stand in the platform.
Be sure that 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 or AH).
2 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to the test port (schematic item A or AA)
on the function manifold.
3 Remove the platform controls from the platform.
4 Turn the key switch to platform control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
GS-1530/32 and GS-1930/32
a
test port
b
steer relief valve
5 Activate the function enable switch and press
and hold the steer thumb rocker switch to the
right. Allow the wheels to completely turn to the
right. Continue holding the switch while
observing the pressure reading on the pressure
gauge. Note the pressure. Refer to Section 2,
Specifications.
6 Press and hold the steer thumb rocker switch to
the left. Allow the wheels to completely turn to
the left. Continue holding the switch while
observing the pressure reading on the pressure
gauge.
7 Turn the machine off. Hold the steer relief valve
with a wrench and remove the cap (schematic
item G or AH).
8 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure.
Component damage hazard.
Do not adjust the relief valve
pressures higher than
specifications.
9 Install the relief valve cap.
10 Repeat steps 5 through 6 to confirm the relief
valve pressure.
GS-32 and GS-46
a
test port
b
system relief valve
c
steer relief valve
d
lift relief valve
