JLG 1350SJP Service Manual - Manual (Page 353)

SECTION 5 - HYDRAULICS
3121142 – JLG Lift – 5-29
4. Remove the front circular steer/axle access covers at the
front of the chassis, and the rear square cover at the top
rear of the chassis to gain access to the axle/steer valves.
5. Install a pressure gauge at the front axle/steer valve at
MS2 port. This should be located on the left side of the
valve closest to the left front wheel spindle. Position the
steer switch to activate the left front steer cylinder until
the rod is in the fully extended position and hold the
switch for a few seconds after the rod has been fully
extended. The MS2 port should read 2000 psi (138 Bar).
If the pressure is not 2000 psi (138 Bar) adjust relief valve
mounted next to the MS2 port, CW to increase or CCW
to decrease.
6. Remove the pressure gauge from MS2 port and install
on the MS1 port, which is on the right side of the front
axle/steer valve, closest to the right front wheel spindle.
Position the steer switch to activate the left front steer
cylinder until the rod is in the fully retracted position
and hold the switch for a few seconds after the rod has
stopped. The MS1 port should read 2600 psi (179 Bar). If
the pressure is not correct, adjust relief valve next to
MS1 port, CW to increase or CCW to decrease.
7. This step involves aligning the left front wheel spindle
with the axle weldment. Position the left front wheel
spindle “straight” using a square and rule or string for
proper alignment (Refer to Section 6 - JLG Control Sys-
tem). Once the left front wheel spindle has been prop-
erly measured, press “ENTER” on the Analyzer. This is
calibrating data to the JLG Control System that the left
front steer sensor is centered.