By joining you will help ensure that we can continue to provide this service
JOIN HERE!
generator rotor bolt
-
- Posts: 62
- Joined: Fri Oct 27, 2006 3:00 am
generator rotor bolt
Thanks. Frank.
NYC.
NYC
- jwonder
- Posts: 784
- Joined: Wed Nov 23, 2016 7:50 pm
- Location: Long Island, New York
- Has thanked: 3 times
- Been thanked: 8 times
- Contact:
Re: generator rotor bolt
That is a bit scary! So, if I am reading this correctly the bolt broke in the middle of two threads. i.e. between the crank and the generator in the open space between the two. If it is flush with the crank a hardened bolt could pull it off, but it will be quite possible that it will bend which is bad too.
I had a tool I had purchased years ago bend inside the same place and I could not get the tool out. It was obviously not hardened correctly. What I needed to do, sadly, was cut the front of the generator off (where the threads are) and remove the tool. Once I had that removed I welded the threads back on to the generator nose and used a new tool to extract the generator. It was not fun but it worked and I am not saying I did this in the best way. Some smart person here may have a different way to do it.
Your issue is that even after you get the front of the generator sawed off, how do you extract the bolt from the front of the crank down in the hole. It may be hard to do so.
I would wait to see what others answer here before you do anything.
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
-
- Posts: 62
- Joined: Fri Oct 27, 2006 3:00 am
Re: generator rotor bolt
NYC
- jwonder
- Posts: 784
- Joined: Wed Nov 23, 2016 7:50 pm
- Location: Long Island, New York
- Has thanked: 3 times
- Been thanked: 8 times
- Contact:
Re: generator rotor bolt
Again, please let us know how you solve it.
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
-
- Posts: 62
- Joined: Fri Oct 27, 2006 3:00 am
Re: generator rotor bolt
You were correct. I tried a hard 8.8 bolt, slap hammer, heat, Kroil, no luck. Had to cut the armature off. Found a ring of rust and pitting was holding the unit on. I was able to use light emery cloth to remove the rust. The rest of the motor is clean and looks new. Frank.
NYC.
NYC