TM 9-2320-365-20-2
2-1708
1.
START
KNOWN INFO
TEST OPTIONS
i8. PARKING BRAKE DOES NOT APPLY
Air tanks pressurized.
Rear brakes operate.
POSSIBLE PROBLEMS
Faulty system park air
supply valve.
Faulty inversion valve.
Faulty anti-compounding
relay valve.
Faulty rear brake plunger
assembly(ies).
YES
NO
Is air release audible at
system park air supply
valve when system park
air supply valve is
pulled?
System Park Air Supply
Valve Test
REASON FOR QUESTION
If air cannot be heard
escaping from system
park air supply valve
when system park air
supply valve is pulled,
system park air supply
valve is faulty.
INITIAL SETUP
Equipment Conditions
Air tanks pressurized (TM 9-2320-365-10).
Engine shut down (TM 9-2320-365-10).
Personnel Required
(2)
Tools and Special Tools
Tool Kit, Genl Mech (Item 44, Appendix C)
Goggles, Industrial (Item 15, Appendix C)
Replace system park air
supply valve (para 11-18).