Labrie Automizer Versa Hand, Maintenance Manual

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106 Hydraulic System
To adjust the proportional valve main relief pressure:
1.
Secure the arm working area using safety tape or barricades.
2.
Install the control lever on the proportional valve to adjust.
3.
Move the lever back and forth to remove any residual hydraulic pressure in the system.
4.
Connect a 0–4000 psi gauge on the quick coupler located on the proportional valve.
Figure 5-15 Control lever and quick coupler
5.
Start the engine and engage the hydraulic system.
6.
Retract and maintain the arm at the end of its stroke using lever.
7.
Adjust the main relief valve to 2000 psi (2700 psi for the 300-gallon gripper version) using the
adjustment screw, turning the hex wrench clockwise to raise pressure, or counterclockwise to
lower pressure.
Warning!
Stay out of the path of the arm while manually moving the Versa Hand
TM
.
Failure to do so may result in severe injury, or even death.
Warning!
Make sure that the ball valve on the suction line is completely open before starting the
engine. Failure to do so may damage the hydraulic system.