Camshaft: Testing and Inspection

CAMSHAFT

INSPECTION

1. Measure the bend, and repair or replace if necessary.





2. Check the journal for damage and wear. Replace if faulty.
3. Measure the outer diameter of camshaft journal and inner diameter of cylinder head journal, and confirm the difference (oil clearance) between the two values. If the oil clearance exceeds the standard, replace the camshaft or cylinder head as necessary.





4. Check the cam face condition, and remove the minor faults by grinding with oil stone. Measure the cam height H. If it exceeds the standard, replace it.








5. Measure the thrust clearance of camshaft with setting the dial gauge at end of camshaft. If the thrust clearance exceeds the limit, replace the camshaft caps and cylinder head as a set. If necessary, replace the camshaft.

Standard 0.030 - 0.090 mm (0.0012 - 0.0035 in.)