TM 9-2320-361-20 Table 2-2. Mechanical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 57. POWER TAKEOFF DIFFICULT TO SHIFT Step 1. Inspect PTO shift linkage for improper lubrication. Lubricate PTO shift linkage if necessary (LO 9-2320-209-12-1). Step 2. Inspect PTO shift linkage for bends and cracks. If PTO shift linkage is bent or cracked, replace (para. 13-20). END OF TESTING! 58. (TRANSMISSION-DRIVEN) POWER TAKEOFF INOPERATIVE Check power takeoff. Engage power takeoff and visually confirm output propeller shaft rotation. a. b. c. If propeller shaft is noisy, inspect propeller shaft and universal joints. If propeller shaft is bent or universal joints have play, repair or replace (para. 13-6). If propeller shaft is not rotating, inspect control linkage. Adjust control linkage and replace defective parts (para. 13-20). If internal problem exists, notify your supervisor. END OF TESTING! 59. (TRANSFER-DRIVEN) POWER TAKEOFF INOPERATIVE Check power takeoff. Engage and visually confirm output propeller shaft rotation. a, If propeller shaft is noisy, inspect propeller shaft and universal joints. If propeller shaft is bent or universal joints have play, repair or replace (para. 7-2). b. If propeller shaft is not rotating, inspect control linkage. Adjust control linkage and replace defective parts (para. 6-2 or 6-3). c. If internal problem exists, notify your supervisor. END OF TESTING! NONELECTRICAL GAGES 60. SPEEDOMETER OR TACHOMETER BOUNCES, NOISY, OR INOPERATIVE Step 1. Inspect speedometer or tachometer drive shaft for binding and kinks. If drive shaft is bent or kinked, replace (para. 4-14, 4-15, or 4-16). Step 2. Remove speedometer or tachometer (para. 4-13) and check speedometer or tachometer cable operation. If cable is operating properly, replace speedometer or tachometer (para. 4-13). END OF TESTING! 61. AIR PRESSURE GAGE INOPERATIVE Check operation of air pressure gage with known good air pressure gage. If test gage works properly, replace air pressure gage (para. 4-11). END OF TESTING! 2-44