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Thread: swapping output shaft 5th gear bearing

  1. #1
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    OK
    I'll post the work I've done today, after I realize, a week ago, the bearing was about to go bummm
    It's a 10 year old bearing with 140000 km in it on an every day ride bike

    remove belt



    with a special home made tool, lock the pulley and remove the locking plate and pulley "left" nut





    Remove pulley, pulley spacer, oil seal, and retaining ring






    Then remove the bearing, I've made a grab so to go in the bearing and be able to pull it out






    yank it out




    now for the new bearing



    did a pusher for it to





    instal the retaining ring the quad seal oil seal pulley spacer and pulley










    using the locking tool, fit the left thread nut and tight it good, fit the locking plate and tight the two bolts




    and finally fit the belt and your done



    can go and relax now


  2. #2
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    just to have an idea on what the bearing looked like



    it does a noise like a low tire or a dirt bike tire on pavement, at first I thought it as the belt noise on the pulley, then I decided to remove the pulley and spacer to try and have a look see, and I saw the spheres had pits on them, the rest is history

  3. #3
    Senior Member d_adams's Avatar
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    Nicely done, my bearings were destroyed, had to split the cases to inspect for possible damage, so doing it this way wasn't an option for me.

  4. #4
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    The day I have to split the cases on my buell, is the day she will stop been my daily ride to work, and sadly, need a new one

  5. #5
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    I'm going to be doing this but wonder why you can't just hold the front sprocket with the belt and rear brake?

  6. #6
    Senior Member Chicknstripn's Avatar
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    That will transfer a lot of stresses through the gear box in a way that the gear box was not designed for. That's another reason why the manual warns against using an impact wrench.
    Trust me, you want to take every precaution you can to protect those gears.
    Once you split those cases to rebuild the tranny, you don't want to do it again!

  7. #7
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    do you know what size the two bolts for the locking plate are? i sold my 5doro pulley cover, and went to put the stock one on, and can't find the factory bolts

  8. #8
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    Quote Originally Posted by d_adams View Post


    Nicely done, my bearings were destroyed, had to split the cases to inspect for possible damage, so doing it this way wasn't an option for me.
    Have you found any damage?

  9. #9
    Senior Member Cooter's Avatar
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    After 2 years I hope so!

    Thanks for bringing this thread up though, It's a nice post!

  10. #10
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    That was done all wrong had to be wrong, he'll be lucky if it lasts a day, I would never copy this technique. There was absolutely no beer consumed, what a wasted opportunity !



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