TM 9-2815-225-34&P
3-49. ACCESSORY DRIVE REPAIR (Contd)
LOCATION/ITEM
ACTION
REMARKS
b. Cleaning
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and protective equipment such as goggles or shield, gloves, etc.
Failure to comply may result in injury to personnel.
9.
All parts
Clean in SD-3 cleaning solvent
Remove housing gasket (3)
and dry with compressed air.
material from accessory drive
housing (15) assembly.
c. Inspection
10. Accessory drive housing
Inspect for the following:
Refer to Appendix F for wear
(15), bushing (13), and
limits and tolerances.
plug (14)
a. Cracks around area of
Discard if cracked.
bushing (13).
b. Inside diameter of bushing (13).
Remove and discard if dimension
exceeds 1.321 in. (33.553 mm).
Use suitable arbor press.
c. Out-of-round.
Remove and discard if out-of-round
exceeds 0.002 in. (0.051 mm).
Use suitable arbor press.
d. Inspect mating threads
Chase threads or use thread
on plug (14).
insert.
11. Accessory drive
Inspect for the following:
shaft (6)
a. Distortion or damage.
Discard if distorted or damaged.
b. Outside diameter of bushing
Discard if dimension is less than
(13) location.
1.310 in. (33.274 mm).
c. Excessive wear at area of
Discard if excessive wear is
dowel pins (7).
detected.
12. Accessory drive gear (4)
Inspect for cracked or chipped
Discard if cracked, chipped, or
and spline coupling hub (10)
teeth and uneven wear.
uneven wear is detected.
13. Thrust bearings (5)
Inspect for wear or galling.
Discard if worn or galled.
and (12) and washer (11)
NOTE
Accessory drive pulleys on M915/Big Cam I and M915A1/Big Cam III are similar. M915A1/Big
Cam III configuration is shown.
14. Accessory drive pulleys (20)
Inspect for:
and (2)
a. Cracks and chips in hub (10).
Discard if cracked or chipped.
b. Wear in grooves.
Discard if excessively worn.
c. Distorted thread holes.
Discard if excessively distorted.
d. Excessive play or wobble
Discard if excessive play evident.
in area of wear sleeve (16).
3-298
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