Crankshaft Radial Play, Checking

Crankshaft Radial Play, Checking

Special tools, testers and auxiliary items required

• Plastigage

Conditions:

• Do not rotate the crankshaft when checking the radial clearance.

Test Sequence:

• Do not interchange used bearings

• Bearing shells that are worn down to the nickel layer must be replaced.

- Remove the main bearing cap and clean the bearing cap and bearing journal.

- Place the Plastigage over the entire width of the bearing journal or onto the bearing shell.

• The Plastigage must rest in the center of the bearing shell.

- Install the bearing cap and tighten the bolts to 60 Nm. Do not rotate the crankshaft when doing so.

- Remove the main bearing cap again.

- Compare the width of the Plastigage with the measuring scale.

Radial clearance:

• New: 0.017 to 0.037 mm

• Wear limit: 0.15 mm