JLG 1350SJP Service Manual - Manual (Page 355)

SECTION 5 - HYDRAULICS
3121142 – JLG Lift – 5-31
12. Remove the gauge from MS3 port and install on MS4
port, which is on the left side of the front axle/steer
valve, closest to the left front wheel spindle. Position the
steer switch to activate the right front steer cylinder
until the rod is in the fully extended position and hold
the steer switch for a few seconds after the rod has
stopped extending. The MS4 port should read 2000 psi
(138 Bar). If the pressure is not correct, adjust relief valve
mounted next to the MS4 port CW to increase or CCW to
decrease.
13. The next step is identical to the left front step men-
tioned above. Make sure the right front wheel spindle is
straight and press “ENTER” to accept the new calibration
settings. Scroll over to right rear steer calibration step.
14. Checking the right rear steer cylinder is identical to the
procedure laid out for the left rear steer cylinder. Install
gauge at MS4 port of the rear axle/steer valve. This
should be at the right side of the valve closest to the
right rear wheel spindle. Position the steer switch to acti-
vate the right 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 stopped extending. The
MS4 port should read 2000 psi (138 Bar. If the pressure is
not correct, adjust relief valve next to the MS4 port CCW
to increase or CCW to decrease.
15. Remove gauge from MS4 port and install on MS3 port,
which is on the left side of the rear axle/steer valve, clos-
est to the left rear wheel spindle. Position the steer
switch to activate the right rear steer cylinder until the
rod is in the fully retracted position and hold the steer
switch for a few seconds after the rod stops retracting. 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.
16. The next step is identical to the left front step men-
tioned above, make sure the right rear wheel spindle is
straight and press “ENTER” to accept the new calibration
settings, now escape out of the calibration menu and
remove the Analyzer and pressure gauge.
Adjustments Made at the Platform Valve Bank
PLATFORM LEVEL UP - 2500 PSI (172.3 BAR)
1. Install a high pressure gauge at the gauge port M1.
2. Activate level up to the end of stroke, it should read
2500 psi (172.3 Bar).
3. All the relief valves are located on the same face. The
level up relief valve is located closest to the M1 gauge
port. Turn clockwise to increase, counterclockwise to
decrease.
PLATFORM LEVEL DOWN - 1500 PSI (103.4 BAR)
1. Install a high pressure gauge at gauge port M2.
2. Activate level down to the end of stroke, it should read
1500 psi (103.4 Bar).
3. The level down relief valve is located to the left of the
level up relief valve. Turn clockwise to increase, counter-
clockwise to decrease.
ARTICULATING JIB UP AND DOWN - 2750 PSI (189.6 BAR)
1. Install a high pressure gauge on gauge port M3. The jib
relief valve is located below the level down relief valve.
Activate jib up or down, it should read 2750 psi (189.6
Bar). Turn clockwise to increase, counterclockwise to
decrease.