TM 9-2320-260-34-1
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
POWER TAKEOFF
Step 1. Check transmission power takeoff (PTO). Engage transmission PTO and visually confirm
output propeller shaft rotation.
a. Remove and inspect transmission PTO if transmission PTO output shaft is not rotating
and transmission PTO is engaged (para. 16-40).
b. Repair or replace transmission PTO if defective (para. 16-40 or 16-41).
Step 2. Visually inspect transmission PTO drive gear for damage.
Repair transmission PI'O if drive gear is damaged (para. 16-41).
END OF TESTING!
Step 1. Check transfer power takeoff (PTO). Engage and visually confirm output propeller shaft
rotation. Proceed to step 2 if output propeller shaft is not turning.
Step 2. Remove transfer PTO (para. 16-43) and check condition of drive clutch half in transfer.
Replace clutch half if defective (para. 16-44 or 16-45).
Step 3. Disassemble and inspect shiftable transfer PTO.
Repair or replace defective parts (para. 16-44 or 16-45).
END OF TESTING!
Step 1. Check shift linkages (TM 9-2320-260-20).
Replace defective parts and adjust (TM 9-2320-260-20).
Step 2. Replace poppet springs if malfunction continues.
a. Procedure applies to shift-type transfer PTO only (para. 16-44 or 16-45).
b. Procedure applies to both types of transmission PTO's (para. 16-41).
END OF TESTING!
CAUTION
When replacing gasket(s) between power takeoff and trans-
mission housing, replace with the exact number of gaskets
removed. Failure to use the correct number of new gaskets
will affect power takeoff-to-transmission gears spacing and
gear backlash. With incorrect gear backlash, equipment may
be damaged.
When power takeoff requires bearing or gear replacement, check
power takeoff drive gear and transmission drive gear backlash.
Failure to adjust backlash may result in damage to equipment.
