Labrie ALLEY -GATOR RIGHT-HAND, Maintenance Manual

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Maintenance 73
Hydraulic Pressure Adjustments
Main Valve Standby Pressure Adjustment
I
MPORTANT
: Adjustments to the main (arm and body) valve system pressure must be performed by qualified
maintenance personnel only. Improper procedure or exceeding correct pressure setting can cause
equipment failure/damage, injury or death.
N
OTE
:
Prior to adjusting the hydraulic arm and body circuit pressures, maintenance personnel must
first ensure that the standby pressure is 250
psi.
To adjust the standby pressure, proceed as follows:
1.
ENSURE the pump is disengaged and the engine is OFF.
2.
INSERT a 0-3000 psi gauge into the P2 port (see Figure 3-43).
3.
START the truck.
4.
With the pump ON and no functions operating, SET the pressure to 250 psi by turning the
adjustment capscrew (see Figure 3-43) clockwise or counter-clockwise depending on the gauge
reading.
5.
REMOVE the gauge after correctly setting the pressure.
Figure 3-43 Standby pressure adjustment
Upon completion of achieving the proper standby pressure, maintenance personnel may then carry
out hydraulic system pressure adjustments.
P2 Port
Adjustment
capscrew