Inspect the cylinder block. If it has cracks, it needs to be replaced

To compensate for the thermal expansion of the valve, a gap is set between the end of the valve stem and the camshaft cam.

According to factory recommendations, the alternator belt should be replaced after 15 thousand km

We replace the timing belt every 75,000 km or if it shows signs of wear and undercutting of teeth, cracks, delamination of rubber and fabric base

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”).