TM 5-3810-307-24-1-2
Air Governor (Air Compressor Will Not
Pump) (012-017)
Initial Check (012-017-001)
NOTE
The illustrations shown will be of the SS
model single cylinder air compressor.
Differences in procedures for SS, QE and ST
model Holset air compressors will be shown
where necessary.
Remove the air governor or air governor line from the air
compressor unloader body.
Operate the engine to activate the air compressor.
If the air compressor is pumping, the air governor is
malfunctioning and must be repaired or replaced. Refer to
the manufacturer's instructions.
If the air compressor does not pump, remove, clean, and
inspect the air compressor unloader valve assembly.
Refer to Air Compressor Unloader Valve, Procedure 012-
013.
If the unloader valve assembly is okay, clean and inspect
the exhaust valve assembly. Refer to Air Compressor
Cylinder Head, Procedure 012-104.
Air Governor (Air Compressor Pumps
Continuously) (012-018)
Initial Check (012-018-001)
NOTE
The illustrations shown will be of the SS
model single cylinder air compressor.
Differences in procedure for SS, QE and ST
model Holset air compressors will be shown
where necessary.
Remove the air accessory air lines from the air
compressor governor.
