Operation CHARM: Car repair manuals for everyone.

Cylinder Block Assembly: Specifications

Main Bearing Cap Torque

Screws, bearing housing





- Initial tightening: 25 Nm (19 ftlb.)
- Final tightening: 1 x 90 degrees turn


Piston Specifications





Check piston diameter -D- on oil piston shank with micrometer gauge. Measured from the lower edge of the shank, the height -X- on the shank is 16 mm.

If the wear limit is exceeded, the piston must be replaced!

The maximum wear allowed on specified measuring point is 100 microns (= 0.1 mm). If this measurement is exceeded, the piston must be replaced. The reference measurements for the piston dimensional groups are to be taken from the following table!

Original pistons are only available in the dimensional group X.

Please observe different weight groups!







Belt Pulley On Crankshaft 50 Nm (37 ftlb.) + 90° torque angle