Operation CHARM: Car repair manuals for everyone.

Cylinder Block



Cylinder bore





Using an internal dial gauge 50 to 100 mm, measure at 3 points in diagonal sequence horizontally - A - and vertically - B -.
Maximum deviation from nominal dimension 0.08 mm

Installing guide frame





Replace bolts - 1 to 20 -.
Tighten bolts for guide frame as follows:
Tighten bolts - 1 to 10 - to 30 Nm with torque wrench.
Tighten bolts - 11 to 20 - to 20 Nm with torque wrench.
Tighten bolts - 1 to 10 - to 50 Nm with torque wrench.
Tighten bolts - 11 to 20 - to 30 Nm with torque wrench.
Tighten bolts - 1 to 10 - 90° (1/4 additional turn) using a rigid wrench.
Tighten bolts - 11 to 20 - 90° (1/4 additional turn) using a rigid wrench.
Tighten bolts for sealing surfaces of cylinder block/guide frame - dark hatching in the illustration - to 9 Nm in diagonal sequence.

Connecting Rod
Connecting rod bolt 30 Nm plus an additional 1/4 turn (90°)
Axial play for each new connecting rod pair 0.20 to 0.38 mm
Axial play wear limit 0.60 mm

Connecting rod radial clearance
Radial clearance, new 0.028 to 0.077 mm
Radial clearance wear limit 0.12 mm

Piston ring gap





Piston ring side clearance





Maximum deviation from nominal dimension 0.04 mm

Crankshaft dimensions





Vibration damper