RECONDITIONING PROCEDURE PISTON CROWN

1. Cleaning / inspection including mpi/dye check

2. Burned / damaged ring grooves

3. Premachining piston crown and mpi/dye check

4. Preheating / SAW welding of piston crown

5. Piston crown after heat treatment

6. Cnc machining of ring grooves

7. Double chromium plating / grinding ring grooves

8. Final inspection / pressure test (evt class approval)