(1) Listen to air dryer while assistant
starts engine (TM 9-2320-364-10)
and observes AIR PRESS gages in cab
Green and red needles should move
up scale as pressure builds up.
(a) If exhaust air is heard coming from
air dryer before truck air pressure
reaches 125 4 psi (861 28 kPa),
turn OFF ENGINE switch, and
adjust or replace air governor
(b) If exhaust air can only be heard
coming from air dryer when truck air
pressure reaches 125 4 psi
(861 28 kPa), air governor is OK.
(2) Turn OFF ENGINE switch.
(3) Install right side noise panel
AIR GOVERNOR TEST
(1) Start engine (TM 9-2320-364-10).
(2) Run at idle for 10 minutes.
(3) Observe air pressure gage.
(a) If air pressure gage does not read
125 4 psi (861 28 kPa), fault not
corrected. Turn OFF ENGINE
switch and notify DS Maintenance.
(b) If air pressure gage reads 125 4
psi (861 28 kPa), fault has been
(4) Turn OFF ENGINE switch.
Air will be released from air dryer when air governor