Crankshaft, Engine

Crank Mechanism





Crankshaft
Main bearing journal radial runout maximum 0.040 mm
Axial play (Measured in the engine with the intermediate section tightened) 0.08-0.19 mm
Main bearing journal radial runout 0.020-0.043 mm





Big end journals
Diameter, standard1 50.000 +0/-0.016
Bearing recess width 26.0 ± 0.1 mm
Maximum out-of-round 0.004 mm
Maximum taper 0.004 mm
(1) The variation in diameter for each bearing journal must not exceed 0.008 mm.

Main bearing journals
Diameter, standard1 65.000 +0.003/-0.016 mm
Axial bearing width 26.00 +0/-0.04mm
Maximum out-of-round 0.004 mm
Maximum taper 0.004 mm
(1) The variation in diameter for each bearing journal must not exceed 0.008 mm.









Classification of main bearings





The marking is stamped on the cylinder block and crankshaft.





1. Classification cylinder block
2. Classification crankshaft
3. Cylinder block
4. Intermediate section

Selecting bearings





Intermediate section





Use new M10 screws

Caution! The M8-screws on the exhaust side are two different lengths

First pass: All M10 screws 20 Nm
Second pass: All M10 screws 45 Nm
Third pass: All M8 screws 24 Nm
Fourth pass: All M7 screws 17 Nm
Final pass: Angle-tighten all M10 screws 90°