TM 9-2320-272-24-1
3-207. AIR GOVERNOR MAINTENANCE (Contd)
c. Testing
NOTE
Whenever governor is tested, instrument panel primary air gauge
is used.
1.
Start engine (TM 9-2320-272-10) and allow air pressure to build to normal operating range.
NOTE
Engine speed must be adjusted to 1,275 rpm before performing
step 2.
2.
Check air pressure gauge (4) for air compressor cut-out pressure. Air governor (1) should stop
pressure buildup at 130 psi (896 kPa). If not, perform adjustment.
d. Adjustment
NOTE
Whenever governor is adjusted, instrument panel primary air
gauge is used.
1.
Loosen locknut (2) and turn adapter (3) clockwise to raise pressure; counterclockwise to lower
pressure.
2.
Depress brake pedal until pressure drops and air compression starts to build up pressure. Air
governor (1) should stop pressure buildup at 130 psi (896 kPa). If not, repeat step 1.
3.
Tighten locknut (2) when correct air pressure is reached.
NOTE
After air compression cut-out pressure is adjusted, perform step 4.
Check air pressure gauge (4) for air compressor cut-in pressure by depressing brake pedal
4.
repeatedly. Air governor (1) should stop pressure buildup above 80 psi (552 kPa). If not, replace air
governor (1).
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