How to replace rear wheel bearings on a kawasaki klx140 l

brakes seized on --brake master cylinder if hydraulic
wheel bearings seized
missing bearing spacer and overloading the bearings on tightening the axle nuts

Linda, looked for video on the wheel bearing replacement for your Kawi, no success. Check the attached links for your manual which would show how to change wheel bearing, I beleive the send link is a free manual. Good luck
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Is it the wheel bearings or is it the transmission? You will need to raise up the back of the bike to see if the wheel spins. Check the gears are in neutral. you may have to loosen the wheel aligners and push the wheel forward to remove the chain. With the chain off, if the wheel is still stuck, it could be wheel bearings, If it turns freely, I would say your transmission or primary gears have locked up.. Also, check and make sure the rear brake has released..

Take off wheel...remove cush drive on sprocket side...prise the oil seal out on the brake side and you'll see a circlip...remove this and drift bearings out. Drift new ones in with a socket or bit of tubing that is the same size as the bearing outer so as not to damage the bearings...re-fit circlip.

Actually, the hook is under the front end of the seat. Just remove bolts and slide it back. You have to remover the CORRECT bolts though. They are NOT the ones that are under the rear fender. Those are for the rear fender itself. The bolt for the seat are found just under the seat on the SIDES about 2/3 of the way back. You have to take off the plastic covers on both sides of the bike to get to the bots and you'll need a ratchet AND a wrench (to hold the nut on the underside of the bolt). Once you get those off, the seat should slide back VERY easily with NO umph needed. :-)

I was thinking wheel bearing but you state they were replaced, are they tight in the hub? if your spokes are tight, your hub would be tight and if wheel bearing are tight everything would be correct when the axle is tightened. Your swing arm is tight as well not loose in the bearing.

So many differnt things can cause this.
worn tyre front
bent wheel
bent discs
worn wheel bearings
worn or unlubricated head bearings.
leaking fork seals'lack of fork oil

the problem can also be caused from the rear of the bike, tyre, bearings, swing arm. misaligned wheels, bent frame etc.

If this has just started happening, tyres and bearings most common.
If there has been no crash involved a lot of the possibility are already excluded

If it is it time with each revolution of the wheel, check brake disc for imperfections on both sides of the disc, It may be just a different colour sheen to the worn surface, this would indicate a warped disc and must be replaced. Or, the wheel bearings maybe wearing out, but this would produce a constant sound when wheel is turning. Hopefully it may just be a cog on the rear sprocket that is catching the chain link incorrectly. This could be fixd with a metal file until a new sprocket is needed. Goodluck and Cheers.