Problem #10

High Pressure in Air System

POSSIBLE CAUSES
Stuck Unloader Plunger (valves)
Bad Governor
Plugged or broken Governor Signal Line
Step #1

Build pressure to 140 psi.
Loosen mounting bolts of Governor. Disconnect Unloader Line if Governor is remotely mounted.

If air leaks, go to Step #2.
If air does not leak, go to Step #3.
Step #2

Remove and inspect Unloader Plungers (valves).
Replace if necessary.
Step #3

Remove and inspect Governor.
Replace if necessary.

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