CRANKSHAFT MAIN BEARINGS MAINTENANCE - CONTINUED
INSTALLATION - CONTINUED
Apply a light coat of lubricating oil on threads of cap-
screws (1). Install new upper main bearing (4), bear-
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.
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.
Repeat steps for the other main bearings (3 thru 5) and
thrust bearing (6) at position no. 6.
Torque capscrews (1) evenly, in the sequence shown
to 44 lb-ft (60 Nm).
Torque capscrews (1) evenly again in the sequence
shown to 88 lb-ft (119 Nm).
Torque capscrews (8) evenly in the sequence shown to 129 lb-ft (175 Nm) final torque.
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.
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.
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-
Install bearing removal/installation tool into oil hole in
crankshaft journal for main bearing being removed.
Slowly turn crankshaft so the special pin pushes
against the end of the bearing opposite the tab, and
upper bearing half (3) is out of the cylinder block.