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 camshaft runout
0.03 mm (0.0012 in)
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.
Camshaft standard height
IN: 42.44 mm (1.671 in)
EX: 41.18 mm (1.621 in)
Camshaft minimum height
IN: 42.33 mm (1.666 in)
EX: 41.06 mm (1.616 in)
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.
Camshaft journal standard diameter
24.96-24.98 mm (0.9827-0.9834 in)
Camshaft journal minimum diameter
24.95 mm (0.9822 in)
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.
Camshaft journal standard oil clearance
0.04-0.08 mm (0.002-0.003 in)
Camshaft journal maximum oil clearance
0.09 mm (0.003 in)
10. Install the camshaft cap.
11. Measure the camshaft end play.
^ If it exceeds the specification, replace the cylinder head or camshaft.
Camshaft standard end play
0.09-0.24 mm (0.004-0.009 in)
Camshaft maximum end play
0.25 mm (0.0098 in)
12. Remove the camshaft cap.