Removal - continued - TM-10-3930-673-340176

TM 10-3930-673-34

3-9. CRANKSHAFT MAIN BEARINGS REPLACEMENT (CONT)

(d)

Slowly turn crankshaft (1) so the

bearing removal/installation tool

pushes against the end of the

bearing opposite the tab, and upper

bearing half (5) is out of the cylinder

block.

(e)

Remove bearing removal/

installation tool from crankshaft (1)

oil hole.

(f)

Remove lower bearing half (6) from

bearing cap (3). Keep main bearings

and bearing caps together as a set.

TR01417

NOTE

When bearings are reused, each bearing must be installed in its original location

because the bearing surfaces have a wear pattern matched to the crankshaft journals.

(g)

Repeat Steps (a) through (f) for remaining main bearing positions (2 through 5) and thrust

bearing (2) at main bearing position (6).

b. Cleaning.

CAUTION

Never use any type of rough material or tools such as sandpaper, emery or crocus cloth,

files, or glassbead cleaning equipment to clean bearings.

(1)

See cleaning instructions (Para 2-12).

(2)

Apply a light coat of oil over the bearings and the bearing surface in the bearing caps if

the bearings are not going to be installed within one hour after cleaning.

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