KNOWN INFO
TEST OPTIONS
i3.
PARKING BRAKE DOES NOT RELEASE (CONT)
Replace air hose
(para 11-21).
TM 9-2320-366-20-2
7.
YES
NO
POSSIBLE PROBLEMS
2-1890
Change 2
Air tanks pressurized.
Gladhands OK.
Air hose 107 OK.
Park control two-way check
valve OK.
Air hose 103 OK.
Air hose 109 OK.
Two-way check valve OK.
Faulty air hose.
Faulty inversion valve.
Faulty air hose 221.
Faulty anti-compounding valve.
Faulty air hose 231.
Is air present at supply
port of inversion valve?
REASON FOR QUESTION
Visual Inspection
Inversion valve cannot be
tested if no air is present at
supply port.