Camshaft Inspection
CAMSHAFT INSPECTION1. Set the No.1 and No.5 journals of the camshaft on V-blocks.
2. Measure the camshaft runout using the dial gauge.
- If it is not within the specification, replace the camshaft.
Maximum camshaft runout
0.03 mm (0.0012 in)
3. Measure the cam height using the micrometer as shown in the figure.
- If it is less than the minimum specification, replace the camshaft.
Cam height
Standard
IN: 42.44 mm (1.671 in)
EX: 41.18 mm (1.622 in)
Minimum
IN: 42.34 mm (1.667 in)
EX: 41.08 mm (1.618 in)
4. Measure the journal diameter using the micrometer. Measurement positions total four and are in the X and Y directions, at two points (A and B) as shown in the figure.
- If it is less than the minimum specification, replace the camshaft.
Camshaft journal diameter
Standard 24.96-24.98 mm (0.9827-0.9834 in)
Minimum 24.95 mm (0.982 in)
5. Measure the camshaft journal oil clearance using the plastigauge with the tappet removed.
- If it exceeds the maximum specification, replace the cylinder head.
Note
- Clean the camshaft journal and the journal receptacle part.
- Cut the plastigauge to the same length as the journal width and position it parallel to the camshaft.
Camshaft journal oil clearance
Standard 0.04-0.08 mm (0.002-0.003 in)
Maximum 0.09 mm (0.0035 in)
6. Measure the camshaft end play using a dial gauge.
- If it exceeds the maximum specification, replace the cylinder head or camshaft.
Camshaft end play
Standard 0.09-0.24 mm (0.0035-0.0094 in)
Maximum 0.25 mm (0.0099 in)