Ashland I-180 Narrow Rear - Manual (Page 29)

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 re-
mote. when the tractor hydraulic remote is activated, oil flows first to the apron cylinders
until they are fully extended. Once the cylinders 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 re-
tracted. Turn adjustment screw an additional 1/4 turn, tighten jam nut. DO NOT tighten
adjusting screw more than necessary.
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