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Bagstr

KTM Rear Wheel Bearing Service

15 posts in this topic

    Anyone else having trouble removing the steel spacers from the hub?  Seems to me, it would be a good idea to lube the seal interface.  The part pulled out on previous bikes and this '16 the fronts pull out. Wood dowel drift from other side?  Don't want to damage stuff.  Lube it first with lithium grease?   What do you recommend? 

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I'd put the axle in that spacer and wiggle the spacer out of the seal.

Usually the damn things are falling off when I'm trying to put on the wheel....

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I use a seal puller. If you don't have one, I highly recommend adding one to your tool set. They are less than $20 and make changing wheel bearings and counter shaft seals a breeze.

BTW, I just did the bearings on my 530EXC. You know the trick about putting the bearings in the freezer before installing, right?

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 Freezer , Yep. Also have seal puller but don't see that helping with spacer.   Thanks.    Tried axle to no success. Not changing the bearing, just lubing the seals.  Bearings are tight and smooth, just want to keep them that way.

 Getting help with brass drift tomorrow. 

 

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I bought some 1/2" dia brass rod and cut to various lengths. I have one that's 12" and works good for driving stuff out of the hub. Got the rod at IMS Kearny Mesa.

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On 12/5/2017 at 6:44 PM, Bagstr said:

 Freezer , Yep. Also have seal puller but don't see that helping with spacer.   Thanks.    Tried axle to no success. Not changing the bearing, just lubing the seals.  Bearings are tight and smooth, just want to keep them that way.

 Getting help with brass drift tomorrow. 

 

If it is working don't mess with it. My opinion. 

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16 minutes ago, kkug said:

If it is working don't mess with it. My opinion.

     Great Minds work in unison.   Ha!      Since I was riding Thursday, called off the surgery with the help of Charlie.  Didn't want to break something at the last minute. I imagine water has been in there causing some minor corrosion. 

Taking the wheel in for balancing to Grove Motorcycle anyway. They may be able to help me with the spacers.  Once the thing is greased, it should be easier.

      The Governor ; Taking it Easy

 Thanks for all the comments gang.  Also looking at the Tusk Blind Collet system for long-term solution. 

 

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The seal lips will wear grooves into the spacers. When they get the grooves they can be quite difficult to remove There are aftermarket spacers available with hardened bushings so they don't get the grooves. You should be able to get at the back side of them? Maybe No need for blind puller?

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Could also be fretting corrosion between the inner bearing race to spacer mating surface. Penetrating lubricant is always a good starting point.

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  Thanks again gents,

       Yes, sprayed inside with my favorite all purpose cleaning agent WD before re-assembling for Thursday. Also White Lithium on the outside grease seal. 

  Certain to cause calamitous failure soon.   Will throw it on the tire stand and try again to " Tap out " with wood or brass. This is my fourth KTM and never had this an issue.

          Bagstr, recently seen in the Anza Borrego 

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Bags -

You might want to consider replacing the bearings as well. KTM's are notorious for rear wheel bearing failures. I have witnessed the failure first hand and when they fail they can take out other components (hub, caliper, etc). I check mine regularly and replace at any hint of a problem. You may have to use considerable force to get the sleeves out which could put excessive lateral load on the inner races of the bearing. This is generally not something you want to do but of course in a case like yours there is likely no choice.

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   Follow-Up;   Showing signs of wear on the spacers.  Looks like a lack of lubrication in my opinion. At 5122 miles, it definitely needs more frequent attention... New spacers and grease seals in the near future.  The ash dowel moved one side, but needed a socket to push the second. Yes, I will get a collet slide hammer tool for more frequent access. Bearings show no slack.  https://www.motionpro.com/product/08-0292  There are cheaper kits, but I like the blue case.

  Who has an opinion on the best quality spacers,  All Balls, SKF or Pivot Works vs OEM etc. ?

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ZipTy racing is making some nice ones the front ones are combo alloy with hardened sleeves but are Yamaha style with plastic seal shrouds. the rears are combo alloy with hardened sleeves. they have beveled edges to aid in sliding the whell assy back into place. well thought out Ty design.

I was going to paste the link but doesn't work anymore.

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