Operation CHARM: Car repair manuals for everyone.

Crankshaft Main Bearing














Crankshaft Main Bearing Cap Bolts
Install new bolts

For crankshaft main bearing cap bolt torque specifications and sequence, refer to Crankchaft Mechanisn, Assembling. Crank Mechanism, Assembling

Classification of Main Bearings





The marking is stamped into the engine block and crankshaft. The classification marking is in the engine block above the oil cooler and crankshaft. The classification shall be read from the digit 1 to 6. The first letter after the digit 1 corresponds to the classification of main bearing 1. The bearing positions are numbered starting at the engine's leading edge.
1. Classification cylinder block
2. Classification crankshaft
3. Cylinder block
4. Intermediate section