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 j4C. NO AIR PRESSURE PRESENT AT M1088 REAR AND/OR FIFTH WHEEL SERVICE GLADHAND(S) (CONT) 2-1976.56 Change 1 TEST OPTIONS KNOWN INFO Visual Inspection REASON FOR QUESTION Is air present at air brake protecting valve supply port FV2? If air is not present, air hose 135 is faulty. If air is present, air brake protecting valve is faulty. 7. Vehicle park and service brakes OK. Air hoses free from kinks. Air present at rear and fifth wheel emergency gladhands. Rear and fifth wheel service gladhands OK. Air hoses 257 and 263 OK. Service gladhand selector valve OK. Air hose 258 OK. Air hose 256 OK. Booster valve OK. Service gladhand two-way check valve OK. Air hose 145 OK. POSSIBLE PROBLEMS Faulty air hose 135. Faulty air brake protecting valve. NO Replace air hose 135 (para 11-21). YES Replace air brake protecting valve (para 11-18). KNOWN INFO Vehicle park and service brakes OK. Air hoses free from kinks. Air present at rear and fifth wheel emergency gladhands. Rear and fifth wheel service gladhands OK. Air hoses 257 and 263 OK. Service gladhand selector valve OK. Air hose 258 OK. Air hose 135 OK. Air brake protecting valve OK. POSSIBLE PROBLEMS Faulty air hose 256. Faulty booster valve. Faulty service gladhand two-way check valve. Faulty air hose 145. 8. Is air present at booster valve delivery port? TEST OPTIONS Visual inspection REASON FOR QUESTION If air is present, air hose 256 is faulty. NO Go to step 9 of this fault. YES Replace air hose 256 (para 11-21).