Ashland I-155XL2 Ver 8-2006 User Manual

Page 28

SETTING THE APRON AND PUSHOFF VALVE

The manifold block containing the pushoff sequence valve cartridge and apron sequence valve

cartridge is used to control two hydraulic circuits with one hydraulic remote. when the tractor hydraulic

remote is activated, oil flows first to the apron cylinders until they are fully extended. Once the cylin-

ders are fully extended, the apron circuits’ hydraulic pressure begins to increase. Once the pressure

threshold is surpassed (which is adjustable. See adjustment section), the sequence valve diverts the

oil flow to the pushoff’s hydraulic circuit. Once the push off is completely extended the operator then

reverses the tractors hydraulic remote. The counterbalance valve will hold the apron open until the

push off is fully retracted. The Apron sequence valve then opens and allows the apron to close.

Setting the valves:

STEP 1 PUSHOFF SEQUENCE VALVE

Loosen the lock nut (3/4”) on the sequence valve cartridge. Turn the setscrew (1/4”) clockwise

until the front apron rises before the push-off begins to advance. (Earthmover should be empty) Turn

the adjustment screw an additional 1/4 turn clockwise and tighten jam nut.

STEP 2 APRON SEQUENCE VALVE

Loosen the lock nut (3/4”) on the counterbalance valve cartridge. Turn the setscrew (1/4”)

clockwise until the apron holds in a raised position while rear gate is being retracted. Turn adjustment

screw an additional 1/4 turn, tighten jam nut. DO NOT tighten adjusting screw more than necessary.