Inspection
Note. Do not rotate the camshaft during inspection. Remove the rocker arms and rocker arm axles.
1. Install the camshaft and camshaft covers to the cylinder head and then tighten the bolts to the specified torque.
Rated torque:
(1) - (10): M8 bolts; M.Z. = 27 Nm
Apply engine oil to threaded parts.
(11) - (14): M6 bolts; M = 9.8 Nm
2. Install the camshaft, slide it towards the distributor.
3. Set the digital indicator to zero and press it against the end of the distributor drive, then move the camshaft back and forth and determine the amount of end play.
Axial play:
- Nominal value (new): 0.05-0.15 mm
- Limit value: 0.5 mm
4. Remove the bolts, then remove the camshaft covers from the cylinder head.
- Remove the camshaft from the cylinder head, wipe it clean, then inspect the cam surfaces. Replace the camshaft if the cams are pitted, scratched or excessively worn.
- Wipe the camshaft bearing surfaces in the cylinder head, then reinstall the camshaft.
- Place pieces of plastic gauge along the axis of each neck.
5. Place the camshaft into the cylinder head, then install the camshaft caps and then tighten the bolts to the specified torque in the sequence shown in the figure above.
6. Remove the camshaft caps, then measure the widest part of the plastic gauge on each journal.
Gap between cover and camshaft:
- Nominal value (new): 0.050-0.089 mm
- Limit value: 0.15 mm
7. If the clearance between the cap and the camshaft is not within the specified range and the camshaft has already been replaced, you must replace the cylinder head.
If the camshaft has not been replaced, first check the runout of the camshaft mounted on the prisms.
Camshaft runout:
- Nominal value (new): 0.03 mm
- Limit value: 0.04 mm
If the camshaft runout is within acceptable limits, replace the cylinder head.
If the runout is not within the acceptable limit, replace the camshaft and check again. If the bearing clearance is still not within the specified limit, replace the cylinder head.
8. Check cam height
Standard Cam Height (new):
Cam position