Valve drive mechanism
1. Place the cylinder head in the front and rear parts on two wooden blocks.
2. Remove the manifolds together with the gaskets.
3. Remove the thermostat housing.
4. Unscrew the valve drive lever mounting nuts. When installing the levers, use new nuts.
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5. Remove the valve actuators (left image) and hydraulic tappets (right image). The valve actuators, hydraulic tappets, guides and spacers must be marked with adhesive tape or arranged in sets so that they fit into place during assembly.
6. Unscrew the two bolts on the drive side and remove the plate securing the camshaft.
7. Remove the camshaft from the cylinder head through the distributor mounting hole.
8. Using a standard tool, compress the valve spring and remove the crackers. The spring can be compressed using tool 21.097 or a tool made by yourself.
9. Remove the spring compressor. Remove the upper spring plate, spring and lower spring plate. Remove the valve from the back of the head. Remove the valves in order, starting from the timing drive side. The valves must be marked with adhesive tape or laid out so that they fit into place during assembly.
10. Using a screwdriver, remove the oil seals.
11. Check the condition of the cylinder head parts.
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