Engine components - examination and renovation

1. The cylinder head and oil pump have been considered earlier in this Chapter. Note the following additional information.

Camshafts

2. With the camshafts removed, examine the bearing surfaces and lobes for wear, pitting and scuffing. Measure the bearing journals with a micrometer. Dimensions are given in the Specifications.

3. Wear or damage to a camshaft means that it must be renewed. If there is corresponding wear in the bearing seats and caps, a complete new cylinder head will be required.

The bearing caps are line bored in position on the head and cannot be renewed separately.

4. With the camshafts fitted to the head, check their endfloat using a dial gauge or feeler blades. Endfloat outside the limits specified means that the camshaft(s) and/or cylinder head must be renewed.

Camshaft toothed belt

5. As mentioned earlier, the belt must be renewed every time that it is removed, even if it appears to be in good condition.

Piston/bore grade marks

6. The number or code denoting the piston and bore grade (see Specifications) is stamped on the block near the engine number.