TM-9-2320-365-20-2 LMTV Unit Maintenance Manual M1078 Series - Volume 2 Download
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KNOWN INFO TEST OPTIONS Visual inspection REASON FOR QUESTION i3. PARKING BRAKE DOES NOT RELEASE (CONT) Air tanks pressurized. No air pressure present at SYSTEM PARK air supply valve supply port. POSSIBLE PROBLEMS Faulty air hose 107. Faulty park control two-way check valve. Is air present at park control two-way check valve delivery port? 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. 11. TM 9-2320-365-20-2 2-1664 Change 1 NO Replace park control two-way check valve (para 11-17). YES Replace air hose 107 (para 11-19).