Hi I would be drilling a hole in the back so you can use a pin punch ,to knock out the piston. If you do not want to weld up the hole,  you can thread it and fit a small grub screw and seal it with Loctite or similar. Start with say 3 - 4mm hole     Cheers Lindsay Siebler  Australia
25 November 2020 at 10:35 AM #5602
LindsaySiebler
Participant

Hi I would be drilling a hole in the back so you can use a pin punch ,to knock out the piston. If you do not want to weld up the hole,  you can thread it and fit a small grub screw and seal it with Loctite or similar. Start with say 3 – 4mm hole     Cheers Lindsay Siebler  Australia