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Page Title:
REAR BRAKES DO NOT APPLY (cont) |
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 TM 9-2320-366-20-2
TM
i2. REAR BRAKES DO NOT APPLY (CONT)
i2.
KNOWN INFO
TEST OPTIONS
7.
Front brakes OK.
Visual inspection
Is air present at booster
REASON FOR QUESTION
Air tanks pressurized.
A blocked or leaking
valve supply air hose and
Supply air hose to foot
supply air hose to booster
is air hose free from leaks
control valve OK.
valve will prevent air
and damage?
Foot control valve OK.
delivery to service brake
Air hoses at cab floor OK.
chambers and cause rear
Air hose to check valve OK.
NO
brakes not to apply.
Check valve OK.
Air hose to control port of
booster valve OK.
POSSIBLE PROBLEMS
Replace damaged air hose
YES
Faulty air hose to supply
(para 11-21).
port of booster valve.
Faulty booster valve.
Faulty air hose to load
sensing valve.
Faulty load sensing
valve.
Faulty air hose to control
port of relay valve.
Faulty air hose to supply
port of relay valve.
Faulty relay valve.
Faulty air hoses to spring
brakes.
Faulty vent hose from
springbrake service
chamber.
Faulty spring brake
chamber.
2-1860
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