Camshaft 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 (Maximum) 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 (mm (in))
With variable valve timing mechanism
IN: 42.44 (1.671)
EX: 41.18 (1.621)
Without variable valve timing mechanism
IN: 42.12 (1.659)
EX: 41.08 (1.618)
Camshaft minimum height (mm (in))
With variable valve timing mechanism
IN: 42.33 (1.666)
EX: 41.06 (1.616)
Without variable valve timing mechanism
IN: 42.01 (1.653)
EX: 40.96 (1.612)
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 diameter (Standard) 24.96-24.98 mm (0.9827-0.9834 in)
Camshaft journal diameter (Minimum) 24.95 mm (0.982 in)
5. Remove the tappet.
6. Position a plastigage 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 oil clearance (Standard) 0.035-0.080 mm (0.0014-0.0031 in)
Camshaft journal oil clearance (Maximum) 0.09 mm (0.0035 in)
10. Install the camshaft cap.
11. Measure the camshaft end play.
^ If it exceeds the specification, replace the cylinder head or camshaft.
Camshaft end play (Standard) 0.09-0.24 mm (0.0035--0.0094 in)
Camshaft end play (Maximum) 0.25 mm (0.0098 in)
12. Remove the camshaft cap.