KNOWN INFO
KNOWN INFO
POSSIBLE PROBLEMS
j5. AIR SYSTEM PRESSURE BUILDS UP MORE THAN 120 PSI (827 KPA)
(COMPRESSOR FAILS TO UNLOAD) (CONT)
FRONT BRAKE/REAR BRAKE
AIR pressure gage reads above
120 psi.
Air hose from wet tank to air
compressor governor OK.
POSSIBLE PROBLEMS
Blocked governor air hose.
Faulty air compressor
governor.
Faulty purge valve.
FRONT BRAKE/REAR BRAKE
AIR pressure gage reads
above 120 psi.
Air hose from wet OK.
Governor air hose OK.
Faulty air compressor
governor.
Faulty purge valve.
Visual Inspection
Visual Inspection
REASON FOR QUESTION
TEST OPTIONS
3.
YES
NO
REASON FOR QUESTION
TEST OPTIONS
2.
YES
Does air escape from air
compressor to air dryer
purge valve air hose?
Air compressor will fail to
unload if air compressor to
purge valve air hose is
blocked.
Clear or replace air hose from
air compressor to purge valve
(para 23-2).
Is air present from air
compressor to purge valve?
If air is not present from air
compressor, air compressor
governor is faulty. If air is
present air dryer purge valve
is faulty.
NO
Adjust or replace air
compressor governor
(para 11-29).
Service air dryer
(para 23-6).
TM 9-2320-365-20-2
2-1746 Change 1
