TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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TM 9-2320-366-20-2 j4D. M1088 TRAILER HANDBRAKE DOES NOT OPERATE (CONT) TEST OPTIONS Visual inspection REASON FOR QUESTION KNOWN INFO NO YES 4. 2-1976.64 Change 1 Air present at rear and fifth wheel gladhands when service brakes applied. Air hoses free from kinks. Air brake protecting valve OK. Air hose 162 OK. Air hose 129 OK. POSSIBLE PROBLEMS Is air present at trailer service brake valve supply port? TEST OPTIONS Visual inspection REASON FOR QUESTION KNOWN INFO If air is not present, park control two-way check valve is faulty. If air is present, air hose 161 is faulty. Is air present at park control two-way check valve delivery port? NO Replace park control two-way check valve (para 11-19). YES Replace air hose 161 (para 11-21). Go to step 5 of this fault. 5. Replace trailer service brake valve (para 11-32). If air is present, trailer service brake valve is faulty. Faulty trailer service brake valve. Faulty park control two-way check valve. Faulty air hose 161. Air present at rear and fifth wheel gladhands when service brakes applied. Air hoses free from kinks. Air brake protecting valve OK. Air hose 162 OK. Air hose 129 OK. Trailer service brake valve OK. POSSIBLE PROBLEMS Faulty park control two-way check valve. Faulty air hose 161.