Cleaning. - TM-10-3930-673-340162

TM 10-3930-673-34

3-8. CRANKSHAFT REPLACEMENT/REPAIR (CONT)

c. Cleaning.

(1)

See cleaning instructions (Para 2-12).

CAUTION

If crankshaft is not to be reinstalled

within one hour after it is cleaned,

apply lubricating oil on the bearing

journals. Failure to comply with this

recommendation will result in

bearing journal corrosion.

(2)

Apply lubricating oil to all

crankshaft bearing journals if

crankshaft is not going to be

installed within one hour after

cleaning.

d. Inspection.

(1)

See inspection instructions

(Para 2-14).

(2)

Visually inspect crankshaft

(a)

Inspect for large, deep cracks or

broken material throughout the

crankshaft, especially in the fillet

and journal areas.

(b)

Inspect for a high concentration of

TR01170

depressions or pitting.

(c)

Inspect for burning or scoring in the journal areas.

(d)

If any of the conditions mentioned in Steps (a) through (c) exist, replace the crankshaft.

(3)

Measure crankshaft bearing journals.

(a)

Measure crankshaft main bearing journals. If any main bearing journal measures less than

3.2662 in. (82.96 mm), replace the crankshaft or use oversize bearings. If any main bearing

journal is out of round by more than 0.0020 in. (0.05 mm), replace crankshaft or machine

crankshaft and use oversize bearings.

(b)

Measure crankshaft connecting rod journals. If any connecting rod journal measures less than

2.7150 in. (68.96 mm), replace the crankshaft or use oversize bearing. If any connecting rod

journal is out of round by more than 0.0020 in. (0.05 mm), replace crankshaft or machine

crankshaft and use oversize bearings.

3-60