PROALL P Series, Service Manual, Page: 76 / 118

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12. HYDRAULICS
12.1 BELT CIRCUIT PRESSURE ADJUSTMENTS
WARNING!
Do not adjust belt circuit pressure relief valve lower than belt pump pressure compensator. This can result in
functions not operating and/or excessive heat build up in the hydraulic system.

To set the max pressure on the belt circuit the belt motor
inlet must be plugged. There are no cylinder functions
on the belt circuit that would allow the system to be dead
ended.

Loosen the lock nut on relief valve using a 3/4” wrench
and turn the adjustment screw in all the way using an 8mm
Allen key.

Loosen the lock nut on belt pump compensator using a
13mm wrench. With belt unload activated, adjust the
pressure to 3900psi using a 3mm Allen Key. (Activate belt
unload by pressed button #10 and then button #14 on the
keypad).

Turn the relief valve adjustment out until the pressure on
the display starts to drop below 3900psi. You should here
the engine load up as well. Turn the relief valve back until
the display reads 3900psi and the engine load is reduced.
Lock the relief valve setting.

Go back and adjust the belt pump compensator until it
reads 3600psi. Tighten the lock nut.

Relief valve is now 300psi higher than pump compensator
setting.

Turn belt OFF. Set pump standby pressure to 250psi by
loosening the lock nut on load sense compensator with
13mm wrench and adjust with 3mm Allen key.
D
C
A
B
B
C
D
A