TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 Table 2-3. Air Conditioning Troubleshooting (Cont’d) MALFUNCTION TEST OR INSPECTION 5. UNUSUAL NOISE WITH CLUTCH DISENGAGED a Check Clutch Air Gap (space between pulley and front clutch plate) (para. 1427) with feeler gauge. Gap must be within range of 0.016 - 0.031 in. (0.406 - 0.787 mm). If air gap cannot be adjusted to specifications, add or remove shims (malfunction 3b, steps 1 and 2). b. Check for defective clutch pulley or front plate. Replace as necessary (para. 14-27). END OF TESTING! 6. INCORRECT OIL LEVEL OR LEAK After a system component has been replaced or there is reason to suspect an incorrect oil level or leak, use the following procedure to check the oil level: NOTE Delete step 1 of this procedure if the compressor has been removed from vehicle. Step 1. Run compressor for ten minutes at engine idle (650 rpm). Step 2. Check compressor oil level (para. 14-17). END OF TESTING! 2-26