Crankshaft Radial Clearance, Measuring

Crankshaft Radial Clearance, Measuring

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 bearings.

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

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

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

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

- Install and tighten the main bearing cap. Do not rotate the crankshaft while doing this.

- Remove the main bearing cap again.

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

Radial clearance:

New: 0.02 to 0.06 mm

Wear limit: 0.10 mm