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Page Title:
PARKING BRAKE DOES NOT RELEASE (CONT) |
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 TM 9-2320-366-20-2
i3. PARKING BRAKE DOES NOT RELEASE (CONT)
KNOWN INFO
TEST OPTIONS
11.
Visual inspection
Air tanks pressurized.
Is air present at park control
Gladhands OK.
REASON FOR QUESTION
two-way check valve
No air pressure present at
If no air pressure is present at
delivery port?
SYSTEM PARK air supply
park control two-way check
valve supply port.
valve, park control two-way
POSSIBLE PROBLEMS
check valve is faulty. If air
pressure is present, air hose
Faulty air hose 107.
107 is faulty.
Faulty park control two-way
check valve.
NO
Replace park control
YES
two-way check valve
(para 11-19).
Replace air hose
107 (para 11-21).
Change 2
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