Camshaft: Testing and Inspection
CAMSHAFT INSPECTION1. Set the No.1 and No.5 journals on V-blocks.
2. Measure the camshaft runout.
- If it exceeds the specification, replace the camshaft.
Maximum runout 0.03 mm {0.0012 inch}
3. Measure the cam lobe height at the two points as shown in the figure.
- If it is less than the specification, replace the camshaft.
Standard height (mm inch)
Minimum height (mm {inch})
4. Measure the journal diameters in X and Y directions at the two points (A and B)as indicated in the figure.
- If it is less than the specification, replace the camshaft.
Standard diameter 24.96 - 24.98 mm {0.9827 - 0.9834 inch}
Minimum diameter 24.95 mm {0.982 inch}
5. Remove the tappet.
6. Position a plastigauge atop the journals in the axial direction.
7. Install the camshaft cap.
8. Remove the camshaft cap.
9. Measure the oil clearance.
- If it exceeds the specification, replace the cylinder head.
Standard clearance 0.035 - 0.080 mm {0.0014 - 0.0031 inch}
Maximum clearance 0.09 mm {0.0035 inch}
10. Install the camshaft cap.
11. Measure the camshaft end play.
- If it exceeds the specification, replace the cylinder head or camshaft.
Standard end play 0.09 - 0.24 mm {0.0035 - 0.0094 inch}
Maximum end play 0.25 mm [0.0098 inch}
12. Remove the camshaft cap.