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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
4.
Front brakes OK.
Visual inspection
Is air present at check valve
REASON FOR QUESTION
Air tanks pressurized.
A blocked or leaking air
supply air hose and is the air
Supply air hose to foot
hose to the check valve
hose free from leaks and
control valve OK.
will prevent air delivery
damage?
Foot control valve OK.
to the check valve and
Air hoses at cab floor OK.
POSSIBLE PROBLEMS
will cause the rear brakes
Faulty air hose to check
NO
not to apply.
valve.
Faulty check valve.
Replace damaged air hose
Faulty air hose to control
YES
(para 11-21).
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.
2-1854
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