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TM 9-2815-226-34-1
3-13. INSPECT CRANKSHAFT
a. Check gear for chips, cracks, broken or worn teeth.
NOTE
It is not necessary to remove gear unless it is found defective.
b. If defective, remove gear.
(1) Position tool no. 3375840 gear puller jaws around gear and pin jaws together.
(2) With pneumatic impact tool engaged with puller, remove gear.
(3) Remove gear key from crankshaft.
c. Visually inspect crankshaft journals for scoring, scratches, nicks, and wear patterns.  If journals are scored,
scratched, or nicked, shaft must be reground to accept undersize main bearings and rod bearings. Undersize
main and rod bearing sets are available in 0.010, 0.020, 0.030, and 0.040 in. (0.254, 0.508, 0.762, and 1.016
mm).
d. Check crankshaft thrust flange at No. 7 bearing for scoring, scratches, and nicks. If defects found, flange must
be reground. Oversize thrust rings are, available in 0.010 and 0.020 in. (0.254 and 0.508 mm).
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