Camshaft Bearing Journal Clearance

Note: Make sure that the following stages are followed exactly. 'The tappets or followers must be removed to carry out this measurement.

Note: Make sure that the camshaft is to specification.

Note: The bearing caps and journals should be free from engine oil and dirt.





1. Position on a length of plastigage on the bearing cap.
^ Insert the camshaft, without lubrication, into the cylinder head.
^ Position a plastigage strip, which should be equal to the width of the bearing cap, on the bearing journal.

2. Following the tightening specification, install the camshaft bearing caps.

3. Note: Do not strike the bearing caps.

Remove the camshaft bearing caps.





4. Using the Plastigage, read off the measurement.
^ Compare the length of plastigage with the plastigage scale.
^ The value that is read off is the bearing clearance.