Ashland I-200TS4 ver 0612 - Manual (Page 19)

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Setting the Apron and Pushoff Valve
The scraper’s manifold block, which contains the pushoff sequence valve cartridge and
apron sequence valve cartridge, is used to control two hydraulic circuits with one hydraulic
remote.
When your tractor hydraulic remote is activated, oil will flow first to the apron cylinders, until
they are fully extended. Once the pressure threshold is surpassed (which is adjustable;
see adjustment section), the sequence valve will diverts the oil flow to the pushoff’s
hydraulic remote. A counterbalance valve will hold the apron open until the pushoff is fully
retracted. Then, the apron sequence valve will open and allow the apron to close.
Step 1: Pushoff Sequence Valve
• Loosen the lock nut (9/16”) on the sequence valve cartridge. Turn the setscrew
(4mm) clockwise until the front apron rises, before the pushoff begins to advance.
Your scraper should be empty during this process. Turn the adjustment screw an
additional 1/4 turn clockwise and tighten the jam nut.
Step 2: Counter Balance Valve
• Loosen the lock nut (9/16”) on the counter balance valve cartridge. Turn the setscrew
(4mm) counter-clockwise until the apron holds in a raised position while the rear gate
is being retracted. Turn the adjustment screw an additional 1/4 turn and tighten the
jam nut. DO NOT tighten the adjusting screw more than necessary.