Removing
1. Remove the camshaft housing.
2. Remove the thrust shoe levers.
3. Remove the thrust block.
4. Remove the hydraulic tappets and place everything in a suitable container so that they fall into place when installed.
Examination
1. Check the running surfaces of the bearing, tappet, valve that work in contact with the camshaft lobes.
2. If the hydraulic tappets are defective, they must be replaced as they cannot be checked.
Installation
1. Lubricate the hydraulic tappets and cylinder head seats with clean engine oil. Install the hydraulic lifters in place.
2. Install the thrust shoes on the tops of the respective valves.
3. Lubricate the levers with clean engine oil and install them in their places. Then install the camshaft housing.
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