Removing
1. The camshaft can only be removed after removing the camshaft housing from the engine. Since the camshaft housing is attached with the cylinder head bolts, the cylinder head must be removed.
2. After removing the camshaft housing, unscrew the mounting bolt from the block and remove the block from the end of the housing.
3. Unscrew the bolts and remove the end cap from the left front end of the housing.
4. Measure the camshaft play. Unscrew the two bolts and remove the camshaft thrust plate.
5. Remove the camshaft from the left end of the camshaft housing.
Examination
1. Check the condition of the bearings in the camshaft housing. Check that the oil supply holes to the camshaft are not clogged.
2. Check the camshaft journals and lobes for wear.
3. Check the camshaft thrust plate for wear and grooves and replace if necessary.
Installation
1. Remove the old camshaft seal and camshaft housing. Install a new sealing ring with the working edges inward so that the end surface of the sealing ring is flush with the end surface of the camshaft housing.
2. Lubricate the camshaft, camshaft housing bearings, and oil seal lips with fresh engine oil.
3. Being careful, install the camshaft into the camshaft housing.
4. Install the camshaft thrust plate and secure it with bolts. Check the end play of the camshaft.
5. Install a new O-ring into the end cap groove. Install the cover to the camshaft housing and secure with bolts.
6. Further installation is carried out in the reverse order of removal.
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