Camshaft Bearing Journal Clearance

Camshaft Journal Clearance





1
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.
Position on a length of Plastigauge on the bearing cap.
- Insert the camshaft, without lubrication, into the cylinder head.
- Position a Plastigauge strip, which should be equal to the width of the bearing cap, on the bearing journal.
2 Install the camshaft bearing caps.
- Follow the relevant tightening sequence.
3
NOTE:
Do not strike the bearing caps.
Remove the camshaft bearing caps.
- Follow the relevant loosening sequence.





4 Using the special tool, read off the measurement.
- Compare the width of Plastigauge with the Plastigauge scale.
- The value that is read off is the bearing clearance.
- If the values are not to specification install a new camshaft.