Crankshaft Main Bearing

Crankshaft Bearing Cap Bolt Tightening Sequence and Specification





Tighten the crankshaft bearing cap bolts in sequence - 1 through 10 - as follows:

Tighten the bolts - 1 through 10 - and the - arrows - by hand.

Tighten the bolts - 1 through 10 - to 65 Nm.

Tighten the bolts - 1 through 10 - an additional 90° (1/4) turn using a ratchet.

Tighten the bolts - arrows - to 20 Nm.

Tighten the bolts - arrows - an additional 90° (1/4) turn using a ratchet.






Axial clearance:

New: 0.07 to 0.23 mm
Wear limit: 0.30 mm






Radial clearance:

New: 0.017 to 0.037 mm
Wear limit: 0.15 mm






Main Bearing Shell Allocation

The bearing shells are allocated to the cylinder block with the correct thickness by the factory. Colored dots serve to identify the bearing thicknesses.

The code letters on the lower contact surface or on the top of the cylinder block identify which bearing shell and where it must be installed in the cylinder block (upper bearing shell).

The code letters on the crankshaft identify which bearing shell and where they must be installed in the bearing cap (lower bearing shell).

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

Cylinder Block






The identification of the cylinder block may be located either on the oil pan sealing surface or on the top (transmission side) of the cylinder block.

The identification on the cylinder block is for the upper bearing shell.






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

Crankshaft






The identification on the crankshaft is for the lower bearing shell.

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

Color Code
S = Black
R = Red
G = Yellow
B = Blue
W = White






Crankshaft Dimensions

(Dimensions are in mm)






1 The preparation of worn crankshafts is not provided.