Crankshaft Main Bearing

Installing Guide Frame





Replace bolts that are tightened to the specification.
Insert the long bolts in the inner row of the guide frame.
Tighten the bolts in 3 steps in the sequence shown:





Crankshaft Dimensions





Axial clearance: 0.15 to 0.25 mm

Radial clearance:
Position the guide frame and tighten it to 50 Nm without tightening it further; do not turn the crankshaft.
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 sides of bearing shells serve for identifying bearing shell thickness.

Allocation of bearing shells to guide frame is marked on transmission flange of crankshaft by a row of letters. The first letter of the row of letters represents bearing "1", the second letter is for bearing "2", etc.