TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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KNOWN INFO TEST OPTIONS i3. PARKING BRAKE DOES NOT RELEASE (CONT) Replace park control two-way check valve (para 11-19). TM 9-2320-366-20-2 11. YES NO Replace air hose 107 (para 11-21). REASON FOR QUESTION If no air pressure is present at park control two-way check valve, park control two-way check valve is faulty. If air pressure is present, air hose 107 is faulty. Visual inspection 2-1898 Change 2 Air tanks pressurized. Gladhands OK. No air pressure present at SYSTEM PARK air supply valve supply port. Faulty air hose 107. Faulty park control two-way check valve. POSSIBLE PROBLEMS Is air present at park control two-way check valve delivery port?