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Stripping Down XJ900 Forks - 26 Pics

Discussion in 'XJ Technical Chat' started by Alive, Apr 22, 2007.

  1. Alive

    Alive Active Member

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    Yup I've been at it again....

    Later model forks than my bike with no Anti-Dive system....

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  2. AdeXJ

    AdeXJ Member

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    Nice job, good pics.

    They looks like XJ900F forks (ca. 1991-93) - I have stripped mine down more than a few times trying to get em stiffer.

    On mine, these seem to work better than the set with anti-dive.
     
  3. Alive

    Alive Active Member

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    The forks I have on now have the anti dive and I'm hoping that these ones (once back together) are a whole lot better than what I have now
     
  4. oby_2

    oby_2 Member

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    Alive,

    What was the outcome mate? I have a 83 XJ900 and the front forks are terrible. I haven't decided whether I'm better rebuilding the current ones or looking for a replacement.

    Cheers
     
  5. RickCoMatic

    RickCoMatic Well-Known Member

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    I redid the Front Forks on my 1983 XJ900RK (USA Model)

    The Damper has a different Oil Lock Piece than I'm seeing in your Photographs. I replaced the Slider and "Shimmed" the Nylon Bush.

    I Pressed a 10-thousandths Piece of PlastiGuage down to .0015 in my Micrometer. Slip the "Shim" behind the Slider and the Front End (along with Progressive Springs and and additional 2.5 cm of pre-load) is Fabulous over the Road and lessens Vibration)

    The Anti-dive's are Simple to Overhaul.
    The Anti-dives are Difficult to Strip.

    The O-ring secured Top beneath the Circlip is a BEAR to get moving out.
    Once it comes free ...
    You only need to refinish the Inside Diameter of a Nylon Bushing to Allow the Cylindrical Piston to have "Travel" again ... and they work beautifully!
     
  6. BlueMaxim

    BlueMaxim Active Member

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    So where did you get that neat little socket tool? There is going to be some interest in that. Nice pics of how those look when they start to leak. Rust and crud that you couldn't even see takes them out.
     
  7. Alive

    Alive Active Member

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    Haven't finished them yet... Got put on hold when the weather started cooling down and we went on holiday, then shifted... Sometime soon I might actually find the time to finish them off
     
  8. ZaGhost

    ZaGhost Member

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    Great pics ..... planning to do the seals on my XS this weekend (if my parts come in)
     
  9. Dookus

    Dookus New Member

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    What is the socket on the end of the extension bars?, my forks are very similar and I'm presently trying to pull them, the bottom allen bolt
    just spins.
     
  10. Dookus

    Dookus New Member

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    Found it, it is a splined recessed bolt, a 21ml allen key fitted.
     
  11. Alive

    Alive Active Member

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  12. Polock

    Polock Well-Known Member

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    were the seals you took out upside down ?
     
  13. Alive

    Alive Active Member

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    No... Why do you ask?
     
  14. Polock

    Polock Well-Known Member

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    shouldn't the open side of the seal with the spring go towards the oil
    and the flat side where the numbers usually are go up towards the air?
    or am i not seeing something right
     
  15. Alive

    Alive Active Member

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    These seals had hollow undersides... the numbers were facing up on the rim just below the spring... They were unusual.
     
  16. Polock

    Polock Well-Known Member

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    ok, i guess their all different here is a excellent article on the topic, you might like the one on kidney belts too
    :wink:
     
  17. Alive

    Alive Active Member

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    Awww man you really know where to find all the good oil... *wanders off to do some "READING"*
     
  18. Dookus

    Dookus New Member

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    That's a good tool, can't find it in Australia though. seller does not post international.
     
  19. Alive

    Alive Active Member

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    This one does

    http://cgi.ebay.com/ebaymotors/Motion-P ... 27b0e78e65

    So does this one
    http://cgi.ebay.com/ebaymotors/Motion-P ... 27b0e779fd

    and this one
    http://cgi.ebay.com/ebaymotors/INTERNAL ... 19bb062424

    http://cgi.ebay.com/ebaymotors/Tusk-Hex ... 27ab0d1241

    And then there's the one in Australia

    http://cgi.ebay.com.au/Motorcycle-front ... 43a0ffe12f

    I searched for "hex axle tool"
     
  20. jeishen

    jeishen Member

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    @polock I was checking out the kidney belt link about half way through I forgot what I was looking at. In other words good link ;-)
     

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