Usually the camshaft oil seal is replaced during engine repairs and when oil leaks

Remove the cylinder head cover (see “Adjusting thermal clearances in the engine valve mechanism”).

Usually, the oil deflector caps are changed when there is an increased oil consumption, accompanied by a large emission of smoke from the muffler

Usually seals are changed due to oil leakage from under the seals or during engine repair

The cylinder head is usually removed to replace its gasket, valves, valve guides, head repair, as well as for complete engine repair

We remove the oil receiver during engine repairs or when the oil receiver screen is clogged and the engine is starved of oil