TM 9-2320-260-34-1
3-9. ACCESSORY DRIVE MAINTENANCE (Contd)
1.
For general cleaning instructions, refer to para. 2-8.
For general inspection instructions, refer to para. 2-9.
2.
Inspect bushing (6) for pitting, galling, and cracks. Measure inside diameter of bushing (6). Replace
3.
bushing (6) if pitted, galled, cracked, or inside diameter is greater than 1.321 in. (33.6 mm).
NOTE
Perform steps 4 and 5 if bushing requires replacement.
4.
Using arbor press, remove bushing (6) from housing (5). Discard bushing (6).
5.
Using arbor press, install new bushing (6) in housing (5).
Inspect accessory driveshaft (2) for cracks, breaks, galling, stripped threads, and elongated pin
6.
holes. Replace or repair if threads are stripped. Replace accessory driveshaft (2) if cracked, broken,
galled, or pin holes are elongated.
Measure outside diameter of accessory driveshaft (2) at bushing (6) location. Replace accessory
7.
driveshaft (2) if outside diameter is less than 1.310 in. (33.27 mm).
Inspect dowel pin (3) for cracks, bending, and obvious excessive wear. Replace dowel pin (3) if
8.
cracked, bent, or worn.
Inspect drive gear (1) and coupling (9) for cracks, breaks, and chips. Replace drive gear (1) or
9.
coupling (9) if cracked, broken, or chipped.
10.
Inspect thrust washers (7) and (8) for cracks and scoring. Replace thrust washers (7) or (8) if
cracked, scored, or accessory driveshaft (2) end play recorded earlier (task b, step 1) is greater than
0.012 in. (0.30 mm).
1. Apply thin coating of lubricating oil to accessory drive shaft (2).
2. Install new dowel pin (3) in accessory driveshaft (2).
3. Using arbor press, install accessory driveshaft (2) in drive gear (1).
CAUTION
Thrust washers must be installed with grooved side facing away
from housing. Failure to do so will result in damage to accessory
drive unit.
4. Apply thin coating of lubricating oil to thrust washers (7) and (8).
5. Install thrust washer (7), accessory driveshaft (2) with drive gear (1), thrust washer (8), and
washer (4) on housing (5). Ensure grooved sides of thrust washers (7) and (8) face away from
housing (5).
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