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 0006 00 0006 00-20 MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. WINCH INOPERATIVE 1. Check transmission PTO linkage for bends, breaks, or improper adjustment. 2. Check front winch drive shaft for broken or missing shearpin. 3. Check front winch propeller shaft for breaks. 4. Check front winch cable for bends and kinks. If PTO linkage is bent, broken, or out of adjustment, replace or adjust (WP 0347 00). If shearpin is broken or missing, refer to TM 9-2320-361-10. If propeller shaft is broken, replace (WP 0346 00). If winch cable is broken or kinked, replace (WP 0343 00). 2. WINCH OPERATES IN ONE DIRECTION ONLY Check transmission PTO linkage for bends or improper adjustment (WP 0347 00). If PTO linkage is bent or out of adjustment, replace or adjust (WP 0347 00). 3. WINCH OPERATES AT ONE SPEED ONLY Check throttle control linkage for damage. If throttle control linkage is damaged, replace (WP 0072 00). 4. DRAG BRAKE DOES NOT OPERATE Check drag brake adjustment. 1. Adjust drag brake as necessary (WP 0342 00). 2. If adjustment will not correct drag brake operation, replace winch (WP 0345 00). 5. WINCH DOES NOT HOLD LOAD WHEN POWER RELEASED Check automatic brake adjustment. Adjust automatic brake as necessary (WP 0344 00). 6. AUTOMATIC BRAKE OVERHEATS 1. Check weight limits for winch. 2. Check automatic brake adjustment. Adjust size of load if overloaded, or use a snatch block. Adjust if necessary (WP 0344 00). 7. VEHICLE ROLLS WHILE OPERATING WINCH Check parking brake for proper adjustment. Adjust parking brake (WP 0164 00). Table 16. Winch Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. PTO NOISY 1. Inspect PTO propeller shaft for proper lubrication. 2. Inspect PTO propeller shaft for bends. Lubricate propeller shaft if necessary (WP 0020 00). If propeller shaft is bent, replace (WP 0346 00). 2. PTO DIFFICULT TO SHIFT 1. Inspect PTO shift linkage for proper lubrication. 2. Inspect PTO shift linkage for bends and cracks. Lubricate PTO shift linkage if necessary (WP 0020 00). If PTO shift linkage is bent or cracked, replace (WP 0347 00). Table 17. Power Takeoff (PTO) Troubleshooting Procedures.