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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
10.
Front brakes OK.
Visual inspection
Air tanks pressurized.
REASON FOR QUESTION
Is air present at load
A lack of air at load
Supply air hose to foot
sensing valve
sensing valve will
control valve OK.
outlet 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 load sensing
YES
booster valve OK.
valve (para 11-10).
Booster valve OK.
Air hose to load sensing
valve OK.
POSSIBLE PROBLEMS
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.
2-1866
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