KNOWN INFO
TEST OPTIONS
Visual inspection
REASON FOR QUESTION
i3. PARKING BRAKE DOES NOT RELEASE (CONT)
Is air present at delivery
port of two-way check
valve?
No air at delivery port of
two-way check valve indicates
a faulty two-way check valve.
Air tanks pressurized.
Air hose 107 OK.
Park control two-way check
valve OK.
Air hose 103 OK.
Air hose 109 OK.
POSSIBLE PROBLEMS
Faulty two-way check valve.
Faulty air hose 119.
Faulty inversion valve.
Faulty air hose 221.
Faulty anti-compounding
valve.
Faulty air hose 231.
6.
TM 9-2320-365-20-2
2-1654 Change 1
NO
Replace two-way check
valve (para 11-14).
YES