Installation - continued - TM-10-3930-673-340186

TM 10-3930-673-34

3-9. CRANKSHAFT MAIN BEARINGS REPLACEMENT (CONT)

NOTE

Install bearing halves dry for the

following clearance checks.

(c)

Install a dry upper bearing half (5)

over the crankshaft journal for main

bearing position no. 1 such that the

bearing tab will fit into the notch in

cylinder block. If used main bearing

half is being installed, install main

bearing half in the same position it

was removed from.

CAUTION

TR01425

Be very careful not to scratch the

crankshaft or the bearing bore

during the installation of the upper

bearing halve A scratched or

damaged crankshaft, or bearing

bore, could result in premature

engine failure.

(d)

Simultaneously push the upper bearing half (5), with a flat blade screwdriver, and turn the

crankshaft (1) until bearing tab is in notch in cylinder block.

(e)

Install a dry lower main lower

bearing half (6) in position no. 1

main bearing cap (3). Tab on

bearing half must be in the notch in

bearing cap. If used main bearing

half is being installed, install

bearing in the same bearing cap it

was removed from.

(f)

Place plastigage on the surface of

lower main bearing half (6).

3-84