Crankshaft Radial Clearance, Checking

Crankshaft Radial Clearance, Checking

Special tools, testers and auxiliary items required

• Plastigage(R)

Conditions

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

Test Sequence

• Do not interchange used bearing shells.

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

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

- Place the Plastigage(R) over the entire width of the bearing journal or into bearing shell.

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

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

- Remove the main bearing cap bolts and cap again.

- Compare the width of the Plastigage(R) with the measuring scale.

Radial clearance:

New: 0.017 to 0.037 mm

Wear limit: 0.15 mm