Permco 400-AS, Rev. A
Approved 1-14-05
Ken Thompson, kc
Figure 1: Valve Preparation
1.
It is extremely important that the pump is UPSIDE DOWN (SEE ATTACHED
DRAWING). Upside down is the position that the detent is facing downwards.
FAILURE TO DO THIS MAY CAUSE THE DETENT BALL TO FALL
WITHIN THE VALVE HOUSING AND MOVE INTO THE ROTATING
GROUP CAUSING PREMATURE FAILURE!
2.
With the pump in the downward position, loosen the plug (7) with an 11/16
wrench and remove the detent assembly (8 & 9).
3.
Detent spring and ball will fall straight down and out of pump.
4.
Re-insert the plug with o-ring.
5.
It should be noted that you will also remove 1 through 6 when attaching the air
shift. Air shift kit (400-AS) should include new o-ring (6).
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