Stuck swingarm bolt!

[Benstyle]

Hi, first post here, I've been looking for a while and thanks to everyone who has contributed so far, saved me a lot of time.

I'm pulling apart a 78 GS750 and one of the final items is the swingarm pivot bolt, it's stuck fast. the odd part is, both ends of the pivot bolt have nuts, not one head and one nut. Has anyone come across this before?
Normally you could tap away with a mallet and the bolt would come free but its not budging. I can't think of any reason why someone would weld it in but that's what it feels like.
The bike sat outside for 6 years but the swingarm moves quite freely, it's just this bolt that's stuck, with no head.
What side should the bolt normally come out (assuming it had a head)?

Thanks, Ben.
(don't worry, the bikes being stripped for sodablast, respray and back on the road).

 

[rapidray]

It will come out either side since it has nuts on both ends. All you can do is get a sledge, & a piece of bar stock or a big punch that's smaller in diameter than the pivot bolt & start smacking it. Try spraying some PB Blaster in there for a day or 2 before you start hitting it. I'll bet this is what you will have to do to get it out. Ray.

 

[Suzuki_Don]

Ben I would give it a good soaking with WD40 at both ends and some penetrating oil if you have some. Then with both nuts off, I would use a piece of 2 x 4 hardwood up against the bolt end and belt it with a lump hammer (2kg preferably). It will move, it just needs some gentle persuasion.

If you can get a little movement one way (5mm, etc) if it's still stiff then hit it from the other end and so forth and gradually work it out. That shaft sits in needle rollers so if they are rusted they will need replacement. I have done this task myself in the last six months.

 

[chuck hahn]

once the 2x4 has it flush up against the frame continue to knock it out the other side using a wood dowel or something soft like a long brass or aluminum rod.

 

[Einstein]

When you do get it out... and you find you have to replace the bearings... also replace the two spacers what the bearings run on, they are cheap enough.

John