84 GS750EF Swingarm Problem

[Dubweiser]

well.....i bought the bike at a steal, runs, 4-1 Vance and Hines Header, Individual KN Filters, new tires/brakes....all for 500 bucks


now the issue....the swingarm wobbles around the bolt, so i took the swingarm off and had a look, the bearings and sleeves look good in the swingarm, and the bushing in the frame looks decent, the bolt though is really sloppy when it goes in and is causing my wobble, is it missing a bushing in the swingarm or is possilbe the bolt is the wrong size ?

[rphillips]

Not sure about your particular model, but most have a bushing between the bearing & the bolt. Check the pictures of your model at bikebandit.com or alpha sports.com

[Billy Ricks]

In your swingarm you should have 4 needle bearings, 2 on each side of the swingarm and 2 bushings that the bolt slides through. You should have 4 caps and 4 flat washers, 1 of each on each side of the swingarm where the bushings slide through.

I just had my swingarm off a few days ago and if everything is right the bolt should be a little tough to get through from one side to the other.

There also should not be a bushing in the frame. Someone may have attempted a swingarm swap and screwed things up.

[Dubweiser]

hrmmm....there is a sleeve for the needle bearings where the bolt goes through, but its such a sloppy fit....i picked up an exploded view of the parts and am gonna take a much closer look today

i'll update...and hopefully with pictures to help

[Billy Ricks]

hrmmm....there is a sleeve for the needle bearings where the bolt goes through, but its such a sloppy fit....i picked up an exploded view of the parts and am gonna take a much closer look today

i'll update...and hopefully with pictures to help

Sounds like either the bushing that slides through the bearings in the swingarm or the bearings themselves are worn out, maybe both. They tend to pick up alot of cantamination over the years and if it's never been serviced yours could be worn beyond service limits.

[Dubweiser]

well, we looked at it last night and measured everything up....all the bushings are the same size, both sides and it seems the bolt is an eighth of an inch in diameter smaller then the bushing sizes...i'm guessing someone just jammed a bolt in for some reason, i can't even speculate why,


anyone wanna break out a vernier gauge and check the size of their swingarm bolt...just the thread side, not taking the bolt out :-D

[Billy Ricks]

I'm not home right now so I can't take any measurements. How tight does the bolt fit in the frame? It shoud fit fairly snug, if not go to Bike Bandit and order the right pivot shaft and nut. Early in my bike's life I discovered mine had broken and had to replace mine. The PO of our bike may have had the same experience and used the wrong bolt just to get it back together to sell.