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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
11.
Front brakes OK.
Visual inspection
Air tanks pressurized.
REASON FOR QUESTION
Is air present at relay
A lack of air at relay valve
Supply air hose to foot
valve control port air
control port air hose will
control valve OK.
hose?
prevent air delivery to
Foot control valve OK.
service brake chambers
Air hoses at cab floor OK.
and cause rear brakes
Air hose to check valve OK.
not to apply.
Check valve OK.
NO
Air hose to control port of
booster valve OK.
Air hose to supply port of
Replace damaged air hoses
YES
booster valve OK.
(para 11-21).
Booster valve OK.
Air hose to load sensing
valve OK.
Load sensing valve OK.
POSSIBLE PROBLEMS
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.
2-1868
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