Maintenance & Technical > KX500 Original

Help needed rear wheel play.

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no sub for cubes:
Hi guys first id like to say what a fantastic websight this is,after purchasing my first kx 500 ive read various bits of info on here and found it a wealth of information.A real kx comuntity feeling :).Id like to pick anyones brains if poss,im currently rebuilding an 88 k500,just got the wheels back in replaced the rear wheel bearings only to find for some reason i still have side play in the rear wheel..I have basically 2 bikes to make one good un so have tried both wheels both axles,both sets of spacers,put the axle in the other way but still cant get rid of this side movement play.To my knowledge and following the book ive put it back together correctly(space in hub,bearings,circlip on disc side,oil seals,dust seals and the spacers biggest spacer on the sprocket side?)the one bearing is very easy to fit almost push it in by hand is that normal?
  Any help is much appreciated and thanks again guys for a great informative web sight.

don46:
The sprocket side spacer should be 18mm, the brake side spacer should be 13mm. The spacer inside the hub is 120mm long, the bearings are standard 6004, 42x20x12, if you have all these components and the right rear brake caliper holder it should be tight or at least very minimal clearance. My 07 kx450 had a couple of mm clearance when the axle was loose. In 89 kawi went to a 22 mm spacer on both sides

Johnniespeed:
The bearing should not just push in easy into the hub. I would look very closely at the hub to determine if the hub is wobbled out and causing the slop. It is possible that both hubs have the same worn spot.
 Keep us posted.
  John 

Hillclimb#42:
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?

no sub for cubes:
Thanks for the advice guys its really appreciated,when the wheel axles done up tight there is more than id say acceptable freeplay,i cant see any excessive wear on the axle but with the wheel out and axle in the loose wheel through the bearings it does appear to have slight movement on the sprocket side,this could be down to wear in the hub as you guys suggested and by coincedence that both wheels have wear in the same place "BUGGER"!
Im a little baffled as well that the spacer on the sprocket side(the bigger one) doesn`t hold the dust seal flush over the hub :/ its free to move up and down the spacer which defeats its purpose,thanks again guys i appreciate all your help,great site and a wealth of info and advice

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