TM-9-2320-334-13&P LHST Operator, Field and Parts Manual M1147A1 Trailer Download
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TM 9-2330-334-13&P AIR SYSTEM LOSES PRESSURE DURING OPERATION/SLOW AIR PRESSURE BUILDUP 0042 00 AIR SYSTEM TROUBLESHOOTING - Continued Table 1. Air System Loses Pressure During Operation/Slow Air Pressure Buildup - Continued. Change 1 0042 00-6 INDICATION/CONDITION DECISION (NO/YES) PROCEDURAL STEPS 6. Is air present at control port of ABS relay valve? No Replace air hose 103. 1. Loosen air hoses at ABS relay valve control port. Yes Go to (Indication/Condition 7). 2. Start towing vehicle engine. 3. Depress towing vehicle brake pedal. 4. Check for presence of air. 5. Shut down towing vehicle engine. 6. Tighten air hoses to ABS relay valve control port.