Installation - continued - TM-10-3930-673-340188

TM 10-3930-673-34

3-9. CRANKSHAFT MAIN BEARINGS REPLACEMENT (CONT)

(8)

Install main bearings halves (5 and

6) positions no. 1 and no. 7.

(a)

Install main bearing halves (5 and

6) position no. 1, Steps (3)(a)

through (e).

CAUTION

Be very careful not to scratch the

crankshaft or the bearing bore

during the installation of the upper

bearing half. A scratched or

damaged crankshaft, or bearing

TR01425

bore, could result in premature

engine failure.

(b)

To install upper bearing half (5) position no. 1 into bearing bore, simultaneously push the

upper bearing half with a flat blade screwdriver and turn the crankshaft (1) until bearing tab

is in notch in cylinder block.

(c)

Continue with main bearing halves (5 and 6) position no. 1 Installation, Steps (3)(i), (j), and

(m) through (o).

(9)

Check crankshaft (1) rotation.

Crankshaft (1) must turn freely. If it does not turn with relative ease, check main bearing halves (5

and 6) installations and size of bearings.

(10) Check crankshaft (1) end play (Para 3-8).

NOTE

Follow-on Maintenance:

Install oil inlet tube (Para 3-24).

Install oil pan (Para 3-23).

END OF TASK

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