Labrie ALLEY -GATOR RIGHT-HAND, Maintenance Manual

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Maintenance 91
Control Circuit
The control circuit allows maintenance personnel to check and adjust the system pressure at different
points along the circuit. The following items can be checked and adjusted:

Standby pressure

Arm pump pressure

Packer pump pressure
Adjusting Standby Pressure
To adjust the standby pressure, proceed this way:
1.
INSERT a 0-3000 psi gauge into the P2 port (see Figure 3-65).
2.
With the pump on and no functions operating, SET pressure to 250 psi by turning the
adjustment capscrew clockwise or counter-clockwise depending on the gauge reading
(see Figure 3-65).
3.
REMOVE the gauge after correctly setting the pressure.
Figure 3-65 Standby pressure adjustment
Adjusting Arm Pump Pressure
To adjust the arm pump pressure:
1.
INSERT a 0-3000 psi gauge into the P2 port (see Figure 3-66).
2.
With the pump on and the arm function stroked to the full up position, SET pressure to 3000 psi
by turning the adjustment capscrew clockwise or counter-clockwise depending on the gauge
reading (see Figure 3-66).
3.
REMOVE the gauge after correctly setting the pressure.
P2 Port
Adjustment
capscrew