TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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4-15 TB 9-2510-251-13 UNIT TROUBLESHOOTING NOTE The following procedures will be listed in accordance to the gauge reading and the corresponding malfunction. 1. CONDENSER MALFUNCTION OR SYSTEM OVERCHARGE/AIR IN SYSTEM Step 1. Does gauge read numbers as shown? If yes, inspect and clean condenser. If no, go to step 2. Step 2. Is the high pressure above 300 psi? If yes, go to step 3. If no, go to step 4. Step 3. Is compressor clutch engaging? If yes, go to step 4. If no, see clutch repair, Section VI. Unit Maintenance Procedures, paragraph 4-13. Step 4. Is the high pressure liquid line cool? If yes, drain and flush system and recharge. If no, go to step 5. Step 5. Check resting pressure, is pressure high according to temp/pressure chart? If yes, air is in the system - drain and flush system and recharge. If no, replace condenser.