Camshaft, Measuring Radial Clearance

Special tools and workshop equipment required 

• Plastigage

Procedure 

-- Remove the camshafts, refer to CAMSHAFT, REMOVING AND INSTALLING .

-- Mark the assignment of the roller rocker lever for installation later.

-- Remove the roller rocker lever and place it on a clean surface.

-- Clean the bearing and the bearing journals.

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

• Plastigage must rest in center of bearing.

-- Reinstall the camshafts, mount the guide frame and tighten the bolts to the final tightening specification, refer to Figure. Be careful not to rotate the camshafts while doing so.

-- Remove the bearing bracket and camshafts.

-- Compare width of Plastigage with calibrated scale.

Radial clearance: 

• For 24 mm diameter bearings: 0.024 to 0.066 mm
• For 36 mm diameter bearings: 0.032 to 0.078 mm.