Generator nut

[andrews gs]

I'm just wondering what size the nut that screws onto the crankshaft to hold the generator magnet and the starter clutch on a 1982 Suzuki gs1100ez some of the crankshaft threads are crushed and I need the right size button die to clean them up just can't find the right mm and thread size anywhere. Thanks for the help.

[rapidray]

You will need a METRIC thread file to do that.
Ray.

[andrews gs]

Why couldn't I just use a metric button die . But first I need to find out what mm the crankshaft is and the thread

[rapidray]

Do what you want but the file is MUCH cheaper & easier to find than the die!
Ray.

[Brendan W]

I recall someone suggesting 16mm fine. A thread gauge would help or bring the nut to an engineers supply shop and match it to a screw. I would agree that a small triangular file is less risky and you can do more of a persuasion job. Dies can go all nuclear.
How did the threads get crushed ?

PS be careful matching screws to nuts. There is a weird situation with 16mm and 5/8". I always forget which way it goes but it can fool you.

[andrews gs]

They got smashed cause I over reved it and broke the 3 bolts to the starter clutch and than the generator magnet spun off the crankshaft and smashed the threads

[Brendan W]

You really have the tee shirt. I'd be prepared to bet that some have done more damage trying to get the rotor off the conventional way

[andrews gs]

What do you mean tee shirt. And the conventional way?

[Brendan W]

Tee shirt - been there. Conventional way is to loosen the screw and use a pullers for the rotor. Many have trouble with both and can end up doing damage to threads.

[andrews gs]

Oh ok yea I have the puller for it but that was not the issue this time lol I just ordered a thread file hope it works