Crankshaft Main Bearing

CRANKSHAFT

The main bearing cap bolts are tightened in 2 progressive steps.

Step 1






Install and uniformly tighten the 10 main bearing cap bolts in the sequence shown in the illustration.

Torque 40 Nm (408 kgf-cm, 30 ft-lbf)

Step 2






Mark the front of the bearing cap bolts with paint.
Further tighten the bearing cap bolts by 90° in the numerical order shown in the previous illustration.
Check that the paint mark is now at a 90° angle to the front.

MAIN BEARING SIZE CODES

There are 4 sizes of standard bearings, marked "1", "2", "3" and "4".


EXAMPLE: Cylinder block "3" + Crankshaft "5" = Total number 8 (Use bearing "3")






Standard cylinder block journal bore diameter:






Standard crankshaft journal diameter:






Standard bearing center wall thickness:






Main Bearing Clearance, Standard & Limit