Crankshaft Main Bearing

Main Bearing Cap

Bolt

40 Nm + 90° (1/4) additional turn.
Always replace.
Fully threaded.
Tighten to 40 Nm (but not any further) to measure the radial play in the crankshaft.

Main Bearing Clearance

Axial play new: 0.07 - 0.21 mm.
Wear limit: 0.30 mm

Measure radial clearance using Plastigage.
New: 0.023 - 0.043 mm wear limit: 0.07 mm

Do not rotate the crankshaft when measuring the radial play.

Main Bearing Size Codes

Identification of the Upper Crankshaft Bearing Shells





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.

G Yellow
B Blue
W White

The - arrow - points in the direction of travel.

If the colored dots can no longer be read, use the blue bearing shell.

The lower crankshaft bearing shells are always shipped as a replacement part with the "yellow" colored dot.







Crankshaft Dimensions

(Dimensions are in mm)