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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
2.
Front brakes OK.
Visual inspection
REASON FOR QUESTION
Air tanks pressurized.
Is air present at foot
A lack of air from
Supply air hose to foot
control valve delivery
delivery port of foot
control valve OK.
air hose?
POSSIBLE PROBLEMS
control valve will prevent
Faulty foot control valve.
air delilvery to service
Faulty air hoses at cab
brake chambers and
NO
floor.
cause brakes not to apply.
Faulty air hose to check
valve.
Replace foot control valve
Faulty check valve.
YES
(para 11-9).
Faulty air hose to control
port of booster valve.
Faulty air hose to supply
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
spring brake service
chamber.
Faulty spring brake
chamber.
2-1850
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