INSTALLATION - CONTINUED -832450407

TM 10-3930-660-24-2

CRANKSHAFT MAIN BEARINGS MAINTENANCE - CONTINUED

0272 00

INSTALLATION - CONTINUED

FLYWHEEL

Apply a light coat of lubricating oil on threads of cap-

screws (1). Install new upper main bearing (4), bear-

FAN

ing cap (2), and two capscrews (1). The bearing cap

must be installed in the same position it was removed

from with number of bearing cap facing towards the

oil cooler side of engine.

10.

After each bearing and bearing cap is installed, torque

capscrews (1) to 37 lb-ft (50 Nm). Do not tighten cap-

screws to final torque value at this time.

4,9

409-934

11.

Repeat steps for the other main bearings (3 thru 5) and

thrust bearing (6) at position no. 6.

12.

Torque capscrews (1) evenly, in the sequence shown

to 44 lb-ft (60 Nm).

13.

Torque capscrews (1) evenly again in the sequence

shown to 88 lb-ft (119 Nm).

409-1931

14.

Torque capscrews (8) evenly in the sequence shown to 129 lb-ft (175 Nm) final torque.

15.

Check bearing clearance for positions no. 2 thru no. 6. Remove two capscrews (1) and bearing cap (2) from main bear-

ings 2, 3, 4, 5 or 6. Remove one set of main bearings at a time.

16.

Remove and measure plastigage. Main bearing clearance must not exceed 0.00474 in. (0.12039 mm). If bearing clear-

ance exceeds the specified measurement, the appropriate oversize bearing set must be installed.

CAUTION

CRANKSHAFT JOURNAL

If crankshaft is turned in the wrong direc-

tion, the tab on the upper bearing half will

be pushed between the crankshaft and

main bearing bore in the block. This could

cause damage to the block and the crank-

shaft.

17.

Install bearing removal/installation tool into oil hole in

crankshaft journal for main bearing being removed.

BEARING REMOVAL/

18.

Slowly turn crankshaft so the special pin pushes

INSTALLATION TOOL

409-4108

against the end of the bearing opposite the tab, and

upper bearing half (3) is out of the cylinder block.

0272 00-7