JLG 400CRT ANSI Service Manual - Manual (Page 31)

SECTION 2 - PROCEDURES
3121111 – JLG Lift – 2-17
.
2.14 PRESSURE SETTING PROCEDURES
NOTE: Make all pressure adjustments with the engine oper-
ating and the hydraulic oil at normal operating tem-
perature. 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 oper-
ating the functions from the platform control station.
Lift Relief Adjustments
1. Install a pressure gauge at gauge port MP, located
on the front upper right side of the valve body. The
port is identified by a stamping on the valve body.
2. From the platform control station, activate the Lift Up
function by selecting the lift control switch and posi-
tioning the joystick to the up position.
3. Bottom out the Lift Up function and adjust the Lift Up
relief to 2300 psi (159 bar) on the 330CRT and
2500 psi (172 bar) on the 400CRT.
4. Remove the pressure gauge from gauge port MP.
Steer Relief Adjustment
1. Install a pressure gauge at gauge port P2, located
on the lower right side of the valve body. The port is
identified by a stamping on the valve body.
2. Activate the Steer Right function and check Steer
pressure. If necessary, adjust Steer pressure to 1600
psi (110 bar).
3. Activate the Steer Left function and check Steer
pressure. If necessary, adjust Steer pressure to 2600
psi (179 bar).
4. Remove the pressure gauge from gauge port P2
MP
Steer Left Steer Right
Lift
Brake Release
Dump Valve
Actuator for Tow
Brake Release
Valve Knob
P2
Steer Right Steer Left
Lift
Main
Figure 2-19. Valve Components