2. Measure the camshaft runout with a dial gauge. If the measured value is out of range (0.030 mm), replace the camshaft with a new one.
3. Measure the cam height with a micrometer as shown in the figure. If the measured value is not correct, replace the camshaft with a new one.
Note:
Standard Cam Height:
- Inlet: 42.34 mm.
- Release: 40.37 mm.
Minimum Cam Height:
- Intake: 42.27 mm.
- Outlet: 40.30 mm.
4. Using a micrometer, measure the diameter of the camshaft journal in four positions - in two mutually perpendicular directions (X and Y) at two points (A and B), as it shown on the picture. If the measured values are not correct, replace the camshaft with a new one.
Note:
- Standard camshaft journal diameter: 24.96-24.98 mm.
- Minimum camshaft journal diameter: 24.93 mm.
5. Measure the oil clearance in the camshaft journals:
- Clean the camshaft journals and their respective camshaft covers.
- Position the camshaft in the cylinder head with the rocker arms removed.
- Place a piece of round gauge equal to the width of the camshaft journal along the camshaft.
- Install the camshaft cover and tighten the bolts.
- Remove the camshaft cover.
- Measure the oil clearance in the camshaft journal at the most flattened part. If the value obtained exceeds the limit, replace the cylinder head.
Note:
- Standard camshaft journal oil clearance: 0.035-0.030 mm.
- Maximum allowable oil clearance of the camshaft journal: 0.090 mm.
6. Using a dial gauge, measure the camshaft end play. If the value obtained exceeds the limit, replace the cylinder head or camshaft.
Note:
- Standard axial clearance of the camshaft: 0.07-0.22 mm.
- Maximum permissible axial clearance of the camshaft: 0.23 mm.