Swing arm install
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Thread: Swing arm install

  1. #1
    Senior Member Maxpower's Avatar
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    Swing arm install

    OK I went to install my swing arm. Took the time to clean and grease the bushings and seals all nice. But I'm confused how to fit the inner seals. They don't fit into the swing arm for me. Or do they? And there is no room between the swing arm and engine cases.
    They came from somewhere
    87 TW

  2. #2
    Senior Member Fred's Avatar
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    You could just get fancy and use sealed ball bearings. Recess them inside the swing arm a mm or so to facilitate installation, then use grease pressure through zerk fittings to press bearing back out if you like. Simple common 6901 series can be very affordable .6901-2RS-C3 - Bearing
    Under $15 should do it, no need for a $40 AllBalls kit, nor dropping ~$90 on ceramic over-kill.
    Don’t forget the grease thought as the shaft needs to stay corrosion free.
    Last edited by Fred; 10-14-2017 at 09:01 PM.
    2003 TW200 "Betty Boop"
    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
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  3. #3
    Senior Member TW-Brian's Avatar
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    Use the stackup of parts shown just above the axle. It is tough to get everything into place and then push the axle through if you are doing it by yourself. It helps to have an extra set of hands.

    swingarm bushings.jpg

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  5. #4
    Senior Member TW-Brian's Avatar
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    Quote Originally Posted by Fred View Post
    You could just get fancy and use sealed ball bearings. Recess them inside the swing arm a mm or so to facilitate installation, then use grease pressure through zerk fittings to press bearing back out if you like. Simple common 6901 series can be very affordable .6901-2RS-C3 - Bearing
    Under $15 should do it, no need for a $40 AllBalls kit, nor dropping ~$90 on ceramic over-kill.
    Don’t forget the grease thought as the shaft needs to stay corrosion free.
    Fred, have you or anybody else actually done this mod?

  6. #5
    Senior Member Fred's Avatar
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    If I recall correctly Twilight told me he used similar bearings from AllBalls when he did his 2.5” swing arm extension. I never rode his bike afterwards though. He did not mention whether press fitting was required. to initially seat the bearings.
    The stock system may work well for robotic assembly but should I ever pull my swing arm again I shall definitely go the sealed 6901 way.
    2003 TW200 "Betty Boop"
    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
    Hidden Content All Things Considered I’ld Rather Be Motorcycling

  7. #6
    Senior Member Maxpower's Avatar
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    Thanks
    Those seals in the center just seemed to have too large an OD to fit into the swing arm.
    I'll get them in there if that's where they go. They came out. I thought I was doing something wrong
    How long do TWs go before feeling swing arm play. It's nice Yammie puts grease fittings on the swing arm
    I appreciate it.
    87 TW

  8. #7
    Senior Member Peterb's Avatar
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    "OK I went to install my swing arm. Took the time to clean and grease the bushings and seals all nice. But I'm confused how to fit the inner seals. They don't fit into the swing arm for me. Or do they? And there is no room between the swing arm and engine cases.
    They came from somewhere"

    Worst thing is when you get it all in and see a seal on the floor.
    Fred, centralwarider and admiral like this.

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