It is very very important to take your swing arm pivot bolt out every 3 months, well depending on how much you ride.  Once that sucker gets dry, it really causes havoc in the swing arm and bearings.  Once those suckers seize, they start to egg out the swing arm.  I had a really fun time removing the pivot bolt from my swing arm a week before a race, and trust me, you don't want to be wrenching all night in preparation for a race. 

Newer bikes have a grease nipple on the swing arm, so if you have it, grease it! 

If you do end up in my situation and the pivot bolt is stuck.  Hit it with some PB Blaster in every area you can get in-between.  Hit it several times during the day.  Let it sit over night.  Pound the crap out of it and if it doesn't come out, its Sawz-All all time!

Borrow a Sawz all.  Remove the plastics and put the bike upside down.  Stabilize the bike and make sure the swing arm is strapped to something on the ceiling of the garage.  The front end needs to be stabilized also, because when the swing arm comes off, it's time to make a wish!

Get the Sawz-All in-between the frame and the swing arm oil seals.  Be very careful, when the Saw catches, it jumps right back your leg!  Not good!  If there isn't enough clearance to get the blade in,  wedge something between the frame and the swing arm in a section away from where you are cutting.  Cut both ends of the bolt and walla!

Attempt to remove the Needle Bearings by tapping around the edges, if there aren't any edges, this means, they have egged and binned with the swing arm.  yeah, good times.  I havent figured out a solution to fixing the egging problem, so I am temporarily using, okay, I'm not going to lie, I am using another old swing arm the has bearings seized into the swing arm, but the bearing still work.  I have raced with this swing arm 6 times and no problems.  But there will come a day I will buy another swing arm. 

Hope this info has been useful!

Adam The VictorVillain #76