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What could cause a track to bind up?

My wife sled is kicking my a$$ the track bnds up in the same two spots any time you try to move it by with out the motor running. I have loosened the track a bunch, didn't help I drop the front bar of the suspension 3/4 of an inch to help clear the cooling rails that run all the way down the tunnel I have looked everywhere that I can think it would be rubbing but I can't find anything, is it possible that there are some hard spots on the track that just make it hard to turn past the drivers and the rear wheels ? I also pulled the belt off the clutches and pulled the brake caliper but no matter what it get hard to move the track in the those two same spots. The sled is a 99 Powder Special, pretty much stock. It couls actually be just one hard spot that catches on the drivers and the rear wheels.
 
Your Rear shock pivot may be pointing down, thus rubbing the track. An easy mistake to make if you are not aware of it, and you have just worked on the suspension.

Just remove the lower bolt on the rear shock, pivot the shock mount to the top of the pivot axle, instead of the bottom. And bolt it in place.


#26 Shock Pivot


http://www.brownsleisureworld.com/P...(99PSB-1999)/IDLERWHEELANDAXLEASSEMBLIES.html

Here is another view. Shock pivoted is displayed, but not notated.

http://www.brownsleisureworld.com/P...9PSB-1999)/REARSUSPENSIONREARARMASSEMBLY.html
 
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My 99 PS does the same and I haven't figured it out yet either. Assumed maybe it was just cause the track spent all summer in the same position and the spots that wrapped around the drivers and the rear axle were somewhat precurved. I hope t spend some more time looking at it next weekend. Shock is pivoted correctly (screwed that up before, probably never will again).
 
I thought about the chain case and bearings too but everthing works great except when it hits those two spots. If it were something besides the track I would think it would happen on every revolution of that part but I can turn the clutch a bunch of times before I feel the binding, I'll have to pull the chain case cover just to be safe. Then I was thinking about proting the track on the spot that seems to be tight, if that works then i'll finish the rest of the track if it don't I'll just glue the pieces back in LOL JK. I was just hoping ot find someone that has ran onto this problem and figured out a solution. It sounds like I'm not the only one with this problem^^.
 
Mark the track with chalk. If it binds in exactly the same place each time I'd say it is because it sat too long with the track in the same place. Just ride it and don't worry about it.

Since the chaincase and bearings turn at different ratios than the track, if there were any binding in those areas it would not happen at the exact same time the track gets to a certain point in it's rotation?
 
I did the mark thing and thats how I know that it is the same two spots. It binds up so bad that if you are moving the sled without the motor running the track won't move, and the sled won't move with the engine running until it hit almost 5k.
 
Since I have owned it has only sat during the off season, but we bought it last year and it has pretty low miles so it s possible that it sat at one time or another and this problem was probably there when we bought it, it had a wheel with a froze up bearing that I thought was the problem before but now I know it is somewhere else. Its probably a flat spot.
 
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