KNOWN INFO
TEST OPTIONS
Visual inspection
REASON FOR QUESTION
i3. PARKING BRAKE DOES NOT RELEASE (CONT)
Is air present at supply
port of anti-compounding
valve?
Anti-compounding valve
cannot be checked if air is not
present at supply port.
9.
Air tanks pressurized.
Air hose 107 OK.
Park control two-way check
valve OK.
Air hose 103 OK.
Air hose 109 OK.
Two-way check valve OK.
Air hose 119 OK.
Inversion valve OK.
POSSIBLE PROBLEMS
Faulty air hose 221.
Faulty anti-compounding
valve.
Faulty air hose 231.
TM 9-2320-365-20-2
2-1660 Change 1
NO
Replace air hose
221 (para 11-19).
YES