Radial Clearance, Measuring

Radial Clearance, Measuring

Special tools, testers and auxiliary items required

• Plastigage

Procedure

• Marked the used bearing for installation later, but not on the running surface.

• If the bearing shells are worn down to the nickel layer, they must be replaced.

- Remove the guide frame and clean the bearing journals.

- Place the Plastigage over the entire width of the bearing journal or into the bearing shells.

• Plastigage must rest in center of bearing shell.

- Install guide frame and tighten to 30 Nm. Do not turn crankshaft.

- Remove the guide frame.

- Compare width of Plastigage with calibrated scale.

Radial clearance:

• New: 0.015 to 0.055 mm.

• Wear limit: 0.080 mm.