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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
5.
Front brakes OK.
Visual inspection
REASON FOR QUESTION
Air tanks pressurized.
Is air present at the check
Supply air hose to foot
A lack of air from the air
valve delivery air hose
control valve OK.
delivery port of the check
when applying brakes?
Foot control valve OK.
valve will not allow the
Air hoses at cab floor OK.
rear brakes to be applied.
Air hose to check valve OK.
POSSIBLE PROBLEMS
NO
Faulty check valve.
Faulty air hose to control
port of booster valve.
YES
Replace check valve (para 11-16).
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.
2-1856
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