CHECKS AND ADJUSTMENTS | 39
The sweep section detent should be set to approximately 2,300
PSI, and the slide approximately 2,500 PSI.
4) The complete cycle time should take approximately 13-15 seconds.
IF NOT
5) Refer to the troubleshooting section in this manual.
AUTOMATIC PACK VALVE DETENTS
Refer to the drawing below. A 5/32 Allen wrench is required to perform this adjustment procedure.
For automatic cycle, if the valve actuating handles fail to “pop-out” of detent at the end of the cylin-
der stroke, a detent adjustment may be required. Proceed as follows:
1) Since low system pressure can also cause detent malfunction, always check the main relief
pressure rst. The main relief pressure adjustment is listed earlier in this section.
2) Misalignment of detent caps at upper end of the valve can cause the detents to hang-up and
fail to release. Loosen the screws, re-align the caps, re-tighten the screws and check
operation.
3) If these two steps fail to correct the detent problem, the detents can be adjusted by the
following procedures:
A) Remove the plastic plug in the end cap opposite the spool attachment end and insert
the Allen wrench into the screw and locknut.
B) Loosen the locknut and turn the screw in (clockwise) to increase the detent force, or
screw out (counter-clockwise) to reduce the detent force.
C) Screw the adjuster inward until the detent fails to release at the end of the cylinder
stroke, and then back it o until it releases.
D) Tighten the locknut and re-check operation through several packing cycle. Reset if
necessary. Install the plastic plugs.
SLIDE BLOCK
Refer to section 6, preventative maintenance, for slide block wear information.
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