Adjustment Procedure for All Pilot Valves (P25)
and
all Mark II, Mark III and Mark IV LGM Load Genies
1) Loosen lower locknut and screw lower adjustment screw “ home”. Using a wrench, tighten lower adjustment screw about 1/4 turn past finger tight. This causes the ball to “seat” itself into the valve.
2) Back off the lower adjustment screw 1/2 Turn.
3) Loosen upper locknut.
4) Now run compressor to pressure. Cut-Out adjustment may be made with upper adjustment screw. (Screw in for higher cut–out, screw out for lower cut-in).
5) Bleed air from tank and note cut in pressure. If a greater differential (difference between cut-out and cut-in) is desired, screw the lower adjustment screw in. If a lesser differential is desired, screw the lower adjustment screw out.
6) Re-check cut-out pressure because adjustments made in step 5 will affect cut-out pressure setting.
Adjust as necessary.
7) Run compressor up to cut-out pressure. If air is rapidly bleeding from around the pull ring rod,
it can be often be stopped by “biasing” the adjustment screws to one side or the other with your thumb. Once the position for minimum leakage is found, hold it there and tighten lower locknut.
8) Tighten upper locknut.
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