Crankshaft Main Bearing

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





Crankshaft





Big End Journals





Main Bearing Journals

Crankshaft Main Bearing Fasteners
Install new fasteners





First pass 20 Nm
Second pass 40 Nm





Third pass 24 Nm





Fourth pass 17 Nm





Final pass Tighten 90°