Labrie MINIMAX Maintenance Manual page 94

86 Hydraulic System
Control levers (see Figure 5-13) are delivered with the vehicle to make pressure adjustments and to
manually operate the arm if neccessary.
Figure 5-13 Control levers and quick coupler
I : Before performing the following procedure, make sure that all function levers and their adjustment
MPORTANT
screws have been properly identified on the valve.
: A helper may be needed when adjusting arm pressure. Use all necessary safety precautions
N
OTE
around the vehicle at all times.
To adjust the arm valve main relief pressure:
Secure the arm working area using safety tape or barricades.
1.
Warning!
Stay out of the path of the arm while manually moving the Helping Hand
Failure to do so may result in severe injury, or even death.
Install the control lever on the arm up/down function of the proportional valve (see Figure 5-4).
2.
Move the lever back and forth to remove any residual hydraulic pressure in the system.
3.
Connect a 0–4000 psi gauge to the quick coupler located on the left front of the arm control valve
4.
(see Figure 5-13).
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.
Start the engine and engage the hydraulic system.
5.
Retract and maintain the arm at the end of its stroke using lever.
6.
Control levers
Quick coupler
TM
.