M9 Q2 15" pin drive was removed and disconnected.
- Pin drive retention screw had to be completely removed to be able to remove pin drive completely.
- Had to make tools to remove pin drive and retention screw, see photos.
- Retention screw removed with 3/4" hex socket with .010" shim inside to cause interference with 3/4 hex bar. Hex socket was then jammed on to screw to retain it. Part was then unscrewed and carried away with socket. 80 µSv on contact, 10 µSv @ 1/2 m, no removable contamination.
- Pin drive removed with double hook tool, left on stand next to steel blocks at magnet elevation.
- 93 turns to fully retract pin drive, 4 turns to completely remove retention screw.
- Q2 joint was pried open with a screwdriver wedged between B1 flange and indium ring. See photo for final result.
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