Operation CHARM: Car repair manuals for everyone.

General Specifications




Surface Variation





Use a straightedge and feeler gauge to measure at several points.

Max. permissible distortion 0.05 mm

Cylinder-to-Piston Clearance








Use a cylinder gauge (50-100 mm)
Take measurements at 3 positions diagonally in transverse direction -A- and in longitudinal direction -B-.

Max. deviation from nominal dimension 0.08 mm

Crankshaft Journal





Axial Play:

New 0.07-0.23 mm
Wear limit 0.30 mm

Check radial clearance with Plastigage TM

Radial Play:

New 0.02-0.06 mm
Wear limit 0.10 mm

Main Bearing Cap

Torque 30 Nm + 180 degrees (1/2 turn)

Connecting Rod Bearing

Axial clearance

New 0.05... 0.31 mm
Wear limit 0.40 mm

Measure radial clearance with Plastigage TM

Radial clearance

New 0.02... 0.07 mm
Wear limit 0.10 mm

Piston Ring





Insert ring at right angle to cylinder wall from above and push down into lower cylinder opening approx. 15 mm from bottom of cylinder. To do so, use a piston without rings.

Use a feeler gauge to measure.











Vibration Damper/Crankshaft Pulley

Torque 100 Nm plus 90 degree (1/4 turn)