(1) Remove plug from air governor port A.
(2) Connect 0 to 160 psi (0 to 1103 kPa)
gage and adapter hose to port A.
(3) While assistant starts engine, monitor
pressure build up until air governor
cut out is heard (TM 9-2320-364-10).
(4) Pressure gage should read
125 ± 4 psi (861 ± 28 kPa) when
air governor cuts out.
(a) If air governor does not cut out
at 125 ± 4 psi (861 ± 28 kPa),
turn OFF ENGINE switch and
adjust air governor (Para 12-41).
(b) If air governor does not cut out
at 125 ± 4 psi (861 ± 28 kPa)
after adjustment, perform
Steps (5) through (8) below and
replace air governor
(c) If air governor cuts out at
125 ± 4 psi (861 ± 28 kPa), air
governor is OK.
(5) Turn OFF ENGINE switch.
(6) Remove pressure gage adapter hose
from port A.
(7) Apply sealing compound to threads
(8) Install plug in port A.
AIR GOVERNOR TEST
Adhesive, solvents, and sealing compounds can burn easily, can give off harmful vapors, and are
harmful to skin and clothing. To avoid injury or death, keep away from open fire and use in well-
ventilated area. If adhesive, solvent, or sealing compound gets on skin or clothing wash immediately
with soap and water.
Wear safety goggles when performing leakage tests on valves. Failure to do so may result in serious eye injury
due to high pressure air.
When air governor cuts out, a sudden
escape of air from the air dryer will be