JLG 2658E3 Service Manual - Manual (Page 30)

SECTION 2 - PROCEDURES
2-18 – JLG Lift – 3120878
2.17 PRESSURE SETTING PROCEDURES
NOTE: Make all pressure adjustments with motor operating
and hydraulic oil at normal operating temperature. In
addition, all functions must be operated from the
platform control station in order to achieve full pump
speed. It may be necessary to use an assistant to
adjust the pressure settings while operating the func-
tions from the platform control station.
Lift Relief Adjustments
1. Install a pressure gauge at gauge port MP, located at
the bottom fornt of the valve body. The port is identi-
fied by a stamping on the valve body.
2. From the platform control station, activate the lift up
function by pressing the lift switch and activating the
controller to the full forward position.
3. While monitoring the pressure gauge at MP, adjust
the lift up relief as follows:
1532E3 - 112 bar (1625 psi)
1932E3 - 138 bar (2000 psi)
2033E3 - 105 bar (1525 psi)
2046E3 - 124 bar (1800 psi)
2646E3 - 124 bar (1800 psi)
2658E3 - 145 bar (2100 psi)
Main Relief and High Drive Pressure Switch
Adjustment
1. Install a pressure gauge at gauge port MP, located at
the bottom front of the valve body. The port is identi-
fied by a stamping on the valve body.
2. Close the steer relief valve completely by turning
clockwise.
3. Activate the steer switch in either direction until the
steer cylinder bottoms out.
4. Adjust your main pressure to 207 bar (3000 psi).
5. Once you have adjusted your main pressure be sure
and reset your steer pressure to 145 bar (2100 psi).
NOTE: In the event that the above procedure will not allow
you to reach the proper pressure take the following
steps:
6. With the pressure gauge still installed and the steer
valve still closed remove the power from the drive
forward or drive reverse valves.
7. Activate the joystick in the direction that the power
was removed from.
8. Adjust your main pressure to 207 bar (3000 psi).
Figure 2-18. Tilt Switch Leveling - Voltmeter Adjustment