Maintenance & Technical > KX500 Original
Help needed rear wheel play.
Mick:
I had to replace the rear hub on my '89. The sprocket side of the hub had become oval. It didn't show noticable signs of wear marks, nothing you could see. But sure as hell the bearing wasn't a press fit. The Talon hub I replaced it with has two bearings on the drive side.
Oh and before I got the Talon hub I had a problem with the drive side bearing going bad every year. The more power the bike made the sooner the bearing went out.
don46:
--- Quote from: Hillclimb#42 on December 24, 2008, 02:34:42 AM ---Yeah, probably sprocket side wore-out. Should be press fit. My bikes have a little play before tightening down the axel nut. Are we talking about play when that's tight? With new bearrings. Was there wear on the axel where the bearrings ride? Wear a little tolerance here and there adds up sometimes.
How do you remember so much Don?
--- End quote ---
I think I have pre-alzheimers, i remember what happened 20 years ago like yesterday, oh yeah thats right I can't remember what I did yesterday.
If you can find a newer style (97+) they have the 2 bearings on the sprocket side. If you had a good machinist you could maybe install a thin steel sleeve to tighten it up but that'd probably cost as much as a new hub, speaking of new hub there was a 86 hub on ebay last week brand new didn't pay much attention to it as I wasn't in the marketfor one. If I remember right the 88 disc takes 8 screws, 89 and newer use 6. I think you could use a talon hub for an 89 or newer, the hub will be nrrower but the spacers will be wider, pretty sure it would fit
You said you had side play, can you take a picture, could the wear be the axle itself, did the bearing go in reasonably hard?
no sub for cubes:
The bearing on the drive side goes in really easy literally slides in by hand ive attached some pics and the pic with me holding the bearing is from me just lifting it out with my fingers..from reading my manual it does suggest the one bearing is an easy fit because you have no way of driving them out in the hub but from what you guys are informing me it should still be a tighter fit than it literally sliding in like it does.Im starting to belive from your guys info both the hubs in both wheels have excessive wear on the sprocket side unfortunate but seem viable.
Your right don its got 8 bolts on the disc,so if i got hold of a later wheel would it fit?im guessing i need the spacers cos their different to mine right?and the caliper mount?Still not sure about the dust seal, if you look at the pic its not pinned tight against the hub by the spacer like the one on the brake side is by the smaller space just seems like somethings a miss but nothing shown in the book that suggests different.
Anyways thanx again guys times something i have on my side, I couldnt of chose a better time for building a building a bike :)
Friar-Tuck:
Cubes,
If the hub is warn you may also have some other issues at work here.
With the bike on a stand, grab the rear wheel (front and back) and twist back and forth.
From what you have described you should get movement (wheel bearings)
Look at the spokes and check for movement there also.
Now take both hands and push / pull together, and look for movement in your swingarm. If the hub has been "Out" a while the swingarm will have been taking an extra bit of banging also.
Forgive me if you have already done this stuff, "but the ankle bone connected to the shin bone" kind of thing. I had this going on with my XR, It wasn't as bad as you describe at the hub,
however I ended up replacing the swingarm,linkage and shock bearings also. Merry Christmas! :-D :-o
Tuck\o/
no sub for cubes:
Merry xmas tuck :-D, i bought the bike (well 2 bikes)in bits and have just started to put it back together so ive replaced all bearing in the shock,linkage and swinging arm,that all feels nice and tight,just this wheel giving me probs so far,everybodys been very helpful taken time to advise,its looking like im gonna have to aquire another hub and get the wheel rebuilt or take a chance and buy a second hand wheel and hope the hubs not excessively worn as well..if i go down that road i need to establish what wheels will fit and what mods if any are required.
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