Adjusting Pressure On 96-Gallon Gripper - Labrie AUTOMIZER FULL EJECT Maintenance Manual

144 Hydraulic System
Warning!
5.
Start the engine and engage the hydraulic system.
6.
Retract and maintain the arm to the end of its stroke using the lever.
7.
Adjust the main relief valve to 2000 psi (2700 psi for a 300-gallon gripper) using the adjustment
screw (see Figure 5-36).
Turn the hex wrench clockwise to raise pressure or counterclockwise to lower pressure.
Figure 5-36 Main relief valve adjustment screw

Adjusting Pressure on 96-Gallon Gripper

Danger!
The section of the proportional valve that controls the gripper is located on the right-hand side of the
valve, and it is equipped with a built-in relief valve that allows gripper pressure adjustment.
To adjust the 96-gallon gripper built-in relief valve:
1.
Make sure the hydraulic pump is disengaged and the engine is off.
2.
Secure the area around the path of the arm with barrier tape or barricades.
3.
Move the manual levers back and forth to release any residual pressure.
4. Make sure that all hoses are tight and not leaking.
Make sure that the shut-off valve on the suction line (see Figure 2-13) is completely open
before starting the engine. Failure to do so may damage the hydraulic system including
the pump.
Do not stand directly in the path of the arm while carrying out these adjustments.