TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0008 00 0008 00-19 MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 2. BURNING ODOR EVIDENT WITH CLUTCH ENGAGED (Contd) 2. If evidence of burned or hard spots on flywheel exist, replace (WP 0029 00). 3. Clutch disc and release bearing defects require replacement of parts (WP 0050 00 and WP 0049 00). 3. CLUTCH NOISY DURING ENGAGEMENT AND DISENGAGEMENT 1. Check clutch noise. Place transmission in neutral. Start engine and push clutch pedal to floor and release. If noise increases when pedal is depressed and released, remove transmission (WP 0131 00). 2. Place transmission in first gear, start engine, and engage clutch. 1. Check release bearing for defects (WP 0049 00). 2. Check clutch pressure plate levers and adjust if necessary (WP 0050 00). 1. If clutch noise increased when engaged, remove transmission (WP 0131 00). 2. Remove and inspect pressure plate and clutch disc for defects. If pressure plate or clutch disc is defective, replace (WP 0050 00). 3. Check flywheel condition. If flywheel is burned or damaged, repair and replace (WP 0029 00). 4. VIBRATION DURING CLUTCH ENGAGEMENT CAUTION Vibration during clutch engagement indicates a warped and/or burned pressure plate and flywheel. When this condition is evident, immediate vehicle clutch inspection is required. Prolonged vehicle operation may result in permanent damage to flywheel and unnecessary damage to transmission. 1. Remove transmission (WP 0131 00). 2. Remove and inspect pressure plate, flywheel, and clutch disc (WP 0029 00 and WP 0050 00). 1. If pressure plate and clutch disc are defective, replace (WP 0050 00). 2. Check flywheel conditions (WP 0029 00). If flywheel is burned or damaged, repair (WP 0441 00) or replace (WP 0029 00). 3. Check clutch pressure plate levers (WP 0050 00) and adjust if necessary. 4. Check pilot bushing condition (WP 0050 00). If pilot bushing is damaged, replace. Table 4. Clutch System Troubleshooting Procedures (Contd).