TM 9-2320-365-20-2
2-1710
KNOWN INFO
TEST OPTIONS
YES
NO
REASON FOR QUESTION
KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
2.
Air tanks pressurized.
Rear brakes operate.
System park air supply
valve OK.
POSSIBLE PROBLEMS
Faulty inversion valve.
Faulty anti-compounding
relay valve.
Faulty rear brake plunger
assembly(ies).
Is air release audible at
inversion valve when
system park air supply
valve is pulled?
Inverison Valve Test
If air cannot be heard
escaping from inverison
valve when system park
air supply valve is
pulled, inversion valve
is faulty.
Air tanks pressurized.
Rear brakes operate.
System park air supply
valve OK.
Inversion valve OK.
POSSIBLE PROBLEMS
Faulty anti-compounding
relay valve.
Faulty rear brake plunger
assembly(ies).
3.
Is air release audible at
anti-compounding relay
valve when system park
air supply valve is
pulled?
Anti-Compounding Relay
Valve Test
YES
NO
If cannot be heard
escaping from anti-
compounding relay valve
when system park air
supply valve is pulled,
anti-compounding relay
valve is faulty. If air can be
heard escaping from anti-
compounding relay valve,
rear brake plunger
assembly(ies) is faulty.
Replace inversion
valve (para 11-12).
Replace anti-compounding
relay valve (para 11-11).
Repair rear brake plunger
assembly(ies) (para 11-5).
i8. PARKING BRAKE DOES NOT APPLY (CONT)
