Anybody know what the procedure is for opening the 2400 spindle cartridge? I'd like to change the grease and inspect the bearings.

The service manual says just to send the assembly back for service. That's not helpful and surely it will cost a lot. I've read that the plate at the top is just pressed in. The retaining ring at the spindle nose looks to be threaded (according to the exploded diagram) and would require some kind of spanner. I assume Pre-load is set using that retaining ring.

Anyway, if anyone could share their experience, it would be greatly appreciated!