Crankshaft Main Bearing

CAUTION:
The main bearing cap bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced.

Check the main bearing cap bolts for necking by holding a scale or straight edge against the threads. If all the threads do not contact the scale (2) the bolt must be replaced.





Tighten the inner main bearing cap bolts in the sequence shown to 20 Nm (15 ft. lbs.) plus 90°.





Install the windage tray (1) with eight main bearing cap bolts. Tighten the bolts in the sequence shown to 21 Nm (16 ft. lbs.) plus 90°.





Install the eight main bearing tie bolts. Tighten the bolts in the sequence shown to 28 Nm (21 ft. lbs.).







CRANKSHAFT MAIN BEARING JOURNALS