- Inspect the camshaft bearings and the journals for evidence of
scoring.
- If the camshaft bearing journals appear to be scored or damaged,
you must replace the cylinder head. DO NOT machine the camshaft bearing journals.
- Inspect the valve seats for cracking or pitting.
- Inspect the cylinder head gasket for signs of coolant leakage.
- Measure the cylinder head flatness using the following procedure:
| 5.1. | Clean any remaining head gasket material from the cylinder head
face. |
| 5.2. | Place a straight-edge diagonally across the cylinder head face
surface. |
| 5.3. | Measure the clearance between the straight-edge and the cylinder
head using a feeler gage at four points along the straight-edge. |
| 5.4. | If warpage is less than 0.05 mm (0.002 in), the
cylinder head surface does not require resurfacing. |
| 5.5. | If the warpage is between 0.05 mm and 0.2 mm (0.002 in
and 0.008 in), you must resurface the head. |
- If resurfacing is required, the dimension
between the combustion chamber gauge pad and the deck surface must be at least
10.5 mm.
