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Page Title:
PARKING BRAKE DOES NOT APPLY (CONT) |
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 TM 9-2320-366-20-2
TM
i8. PARKING BRAKE DOES NOT APPLY (CONT)
i8.
KNOWN INFO
TEST OPTIONS
2.
Air tanks pressurized.
Inverison Valve Test
Rear brakes operate.
Is air release audible at
REASON FOR QUESTION
System park air supply
inversion valve when
If air cannot be heard
valve OK.
system park air supply
POSSIBLE PROBLEMS
escaping from inverison
valve is pulled?
Faulty inversion valve.
valve when system park
Faulty anti-compounding
air supply valve is
relay valve.
pulled, inversion valve
NO
Faulty rear brake plunger
is faulty.
assembly(ies).
YES
Replace inversion
valve (para 11-13).
KNOWN INFO
TEST OPTIONS
3.
Air tanks pressurized.
Anti-Compounding Relay
Rear brakes operate.
Valve Test
Is air release audible at
REASON FOR QUESTION
System park air supply
anti-compounding relay
If air cannot be heard
valve OK.
valve when system park
escaping from anti-
Inversion valve OK.
air supply valve is
POSSIBLE PROBLEMS
compounding relay valve
pulled?
Faulty anti-compounding
when system park air
relay valve.
supply valve is pulled,
Faulty rear brake plunger
anti-compounding relay
assembly(ies).
valve is faulty. If air can be
heard escaping from anti-
compounding relay valve,
rear brake plunger
NO
assembly(ies) is faulty.
YES
Replace anti-compounding
relay valve (para 11-12).
Repair rear brake plunger
assembly(ies) (para 11-5).
2-1944
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