Crankshaft Main Bearing

Crankshaft Main Bearing Cap Bolts
Always replace bolts
First step 40 Nm
Second step Tighten an additional 90° (1/4) turn
Tighten to 40 Nm (but not the additional 90°) to measure the radial play in the crankshaft

Allocation, Upper Bearing Shells (Cylinder Block)





From the factory, the upper bearing shells are allocated to the cylinder block with the correct thickness. Colored dots serve to identify the bearing thicknesses

The letters marked on the lower sealing surface of the cylinder block identify which bearing thickness must be installed in which location





The - arrow - points in the direction of travel

If the colored dot is not visible, use the blue bearing shell

Allocation, Lower Bearing Shells (Bearing Cap)





From the factory, the lower bearing shells are allocated to the bearing cap with the correct thickness. Colored dots on the sides of the bearing shells serve to identify bearing shell thickness

The allocation of the bearing shells for the bearing cap is identified by a series of letters on the vibration damper. The first letter in the row of letters represents bearing "1", the second letter is for bearing "2", etc.





The - arrow - points in the direction of travel

Crankshaft Axial Clearance
New 0.07 to 0.21 mm
Wear limit 0.30 mm

Crankshaft Radial Clearance
New 0.023 to 0.043 mm
Wear limit 0.07 mm