JLG 1350SJP Service Manual - Manual (Page 354)

SECTION 5 - HYDRAULICS
5-30 – JLG Lift – 3121142
8. Checking the left rear steer cylinder is identical to the
procedure for left front steer cylinder, except now we are
checking pressures at the rear axle/steer valve location.
Install pressure gauge at MS1 port. This should be
located on the left side of the valve closest to the left
rear wheel spindle. MS1 port should read 2600 psi (179
Bar) when the left rear steer cylinder is activated with
the rod in the fully retracted position. If the pressure is
not 2600 psi (179 Bar) adjust relief valve mounted next
to MS1 port CW to increase or CCW to decrease.
9. Remove the gauge from MS1 port and install on MS2
port, which is on the right side of the rear axle/steer
valve, closest to the right rear wheel spindle. Position
the steer switch to activate the left rear steer cylinder
until the rod is in the fully extended position and hold
the steer switch for a few seconds after the rod has been
fully extended. The MS2 port should read 2000 psi (179
Bar). If the pressure is not correct, adjust the relief valve
mounted next to MS2 port CW to increase or CCW to
decrease.
10. The next step is identical to the left front step men-
tioned above. Make sure the left rear wheel spindle is
straight and press “ENTER” to accept the new calibration
settings, now press “ESC” (escape) and scroll to the right
front steer calibration step.
11. Checking the right front steer cylinder is identical to the
procedure laid out for the left front steer cylinder, except
the pressures are now checked at MS3 port of the front
axle/steer valve. This should be at the right side of the
valve closest to the right front wheel spindle. Install the
gauge at MS3 port. Position the steer switch to activate
the right front steer cylinder until the rod is in the fully
retracted position and hold the steer switch for a few
seconds after the rod has been fully retracted. If the
pressure is not 2600 psi (179 Bar), adjust the relief valve
mounted next to the MS3 port CW to increase or CCW to
decrease.