Crankshaft Main Bearing

Guide Frame:





Replace bolts which have been tightened to an additional torque.
Insert the long bolts in the inner row of the guide frame.
Tighten the bolts in 3 steps according to the tightening sequence:





Crankshaft Dimensions:





Axial Clearance:
Axial clearance 0.15 to 0.25 mm

Radial clearance:
New 0.015 to 0.055 mm
Wear limit 0.080 mm

Allocation of Crankshaft Bearing Shells for Cylinder Block:





Bearing shells with the correct thickness are allocated to the cylinder block in the factory. Colored dots on sides of bearing shells serve for identifying bearing shell thickness.

Allocation of bearing shells to cylinder block is marked by a letter on the respective bearing on guide frame





Allocation of Crankshaft Bearing Shells for Guide Frame:





Bearing shells with the correct thickness are allocated to the guide frame in the factory. Colored dots on the sides of bearing shells serve for identifying bearing shell thickness.

The allocation of the bearing shells for the guide frame is identified by a series of letters on the crankshaft flywheel flange. The first letter of the row of letters represents bearing "1", the second letter is for bearing "2", etc.