Crankshaft Main Bearing

Bearing Cap

Bolt
30 Nm + an additional 180° (1/2) turn.
Always replace

Main Bearing Clearance

Axial play:
New: 0.07 to 0.23 mm
Wear limit: 0.30 mm

Check the radial clearance using Plastigage(R):
0.02 to 0.06 mm
Wear limit: 0.10 mm
Do not rotate the crankshaft when measuring the radial play.






Crankshaft Bearing Shell, Allocating

The main bearing shells are allocated to the cylinder block and crankshaft with the correct thickness at the factory. Colored dots serve to identify the bearing thicknesses.

If the cylinder block or crankshaft are being replaced, then the bearing shells must be allocated.

The bearing shell for the cylinder block (upper bearing shell) is always marked in yellow.

Using the letters on the cylinder block and crankshaft, determine the correct colored identification for the bearing shell in the bearing cover (lower bearing shell).

The first letter is for bearing cap one, the second for bearing cap two, etc.

Cylinder Block Identification






The letters are located on the oil pan sealing surface.

Crankshaft Identification






The letters are located on the outer crankshaft counterweight for cylinder 1.

Note the letters and then match them to the color identification in the table.







Example:












Crankshaft dimensions:

Crankshaft bearing: 59.958 to 59.978 mm

It is not permissible to rework the crankshaft.