Vintage BMW Motorcycle Owners

Did you manage to remove the armature?

Another thing to try is to hit it with penetrating oil, tighten the puller bolt, let it sit a few days. Back off the bolt, more penetrating oil, then take up the tension again, hopefully a little past where it stopped previously. Be sure to grease the threads of the puller bolt, and the tip as well - remember it needs to be able to rotate!

Sadly, no luck. It's been sitting with the bolt hole filled with PB Blaster and the puller tightened for a couple days now with no luck. I am guessing I will find I have bent the puller again when I go to remove it.
So, unless there are any other ideas out there I may go to the slide hammer and hope for the best. Still havent worked out how to get the 7/8 SAE end of the hammer attached to a 8mm bolt. Probably going to have to fab up an adapter.
Those slingers better damn well be full of crap!!!!!!!!

Update--I made an adapter--welding a 5/8 bolt to one side of a steel plate and a 8mm on the opposite side, allowing me to attach the slide hammer to the armature.
On the 6th really forcefull slide the welds broke--armature still sitting on the end of the crankshaft! It mocks me.
Maybe pack C4 into the bolt hole and take cover.

Break out the big guns...call Vech!!!! I'm sure he's encounted this and more in all his years or wrenching on these bikes.

OK-got it off. Made a new--completely over-engineered, welded to hell, adapter for the slide hammer. made up a bolt to pass through the armature threads and screw into the crank. put a torch on this bolt for about 15 minutes to send heat down in. removed it, hooked up slide hammer and about 6 massive slams later it popped off. looks like a ring of rust on the back was the culprit.
Of course now I have new questions but will start a new thread for those.
Thanks all for the help.