TM9-2320-361-34 Table 2-1. Mechanical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 25. BURNING ODOR EVIDENT WITH CLUTCH ENGAGED Clutch engagement followed by a burning odor indicates clutch improperly engaged and slipping. When this condition is evident, inspection of vehicle clutch operation is required immediately. Prolonged operation of vehicle under these conditions may result in damaged clutch disc, pressure plate, and flywheel. Clutch slippage due to improper clutch disc operation mav result in damage to pressure plate, clutch disc, and flywheel contact surface. NOTE Light surface discoloration of pressure plate and flywheel contact surfaces may be removed with crocus cloth. Deeper discoloration and hard spots on flywheel may require replacement of part. Check clutch assembly condition. Remove transmission (para. 8-2). Remove pressure plate and clutch disc for inspection (para. 4-1). Remove release bearing for inspection (para. 8-4). a. If flywheel or pressure plate surface is only slightly discolored or damaged, clean with crocus cloth. If damage is greater, replace and repair (paras. 4-1 and 3-5). b. If evidence of burned or hard spots on flywheel exist, replace (para. 3-5). c. Clutch disc and release bearing defects require replacement of parts (paras. 8-4 and 4-1). END OF TESTING! 26. CLUTCH NOISY DURING ENGAGEMENT AND DISENGAGEMENT Step 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 (para. 8-2). a. Check release bearing for defects (para. 8-4). b. Check clutch pressure plate levers (TM 9-2815-210-34-2-2 and adjust if necessary). Step 2. Place transmission in first gear, start engine, and engage clutch. b. c. a If clutch noise increased when engaged, remove transmission (para. 8-2). Remove and inspect pressure plate and clutch disc for defects (para. 4-1). If pressure plate or clutch disc are defective, replace (para. 4-1). Check flywheel condition (para. 3-5). If flywheel is burned or damaged, replace and repair (para. 3-5). END OF TESTING! 2-18