KNOWN INFO
TEST OPTIONS
7.
Is air dryer purge valve
free from constant air leaks
and excessive moisture?
YES
NO
REASON FOR QUESTION
Service air dryer
(para 23-6).
FRONT BRAKE/REAR BRAKE
AIR pressure gages OK.
Air hoses and fittings from air
cleaner to air compressor OK.
Air hoses and fittings from air
compressor to air dryer OK.
Air hose and fittings from air
dryer to wet tank OK.
Air hoses and fittings from wet
tank to air compressor OK.
Air hoses, check valves, and
fittings from wet tank to
primary and secondary air
tanks OK.
POSSIBLE PROBLEMS
Faulty air dryer purge valve
and/or clogged desiccant
cartridge.
Faulty air compressor
governor.
Faulty air compressor.
A leaking air dryer purge valve
or a clogged air dryer desiccant
cartridge may cause air system
to lose pressure or take an
excessive amount of time to
build up air pressure.
TM 9-2320-365-20-2
2-1726 Change 1
Soapy Water Leak Test and
Visual Inspection
j1. AIR SYSTEM LOSES PRESSURE DURING OPERATION/SLOW, NO, OR INCORRECT AIR
PRESSURE BUILDUP (CONT)
