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6A-66 ENGINE MECHANICAL (C24SE, C22NE, 22LE, 20LE) OPERATIONS ON OIL CIRCULATION Cylinder Head Safety Valve Removal 1. Remove cylinder head according to the corresponding 2. Make hole in core plugs with pointed drift, turn in self Important! Cover oil duct in cylinder head with piece of cloth. 3. Pull out valve retainer, using commercially available tool. 4. Remove ball and spring. 5. Cut three threads in the ball seating with M 10 tap (3rd 6. Coat tap with grease. 7. Remove ball seating from cylinder head with |