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3LN Fork Seal Dims

Discussion in 'Yamaha 250cc In-Line 4's' started by Yam4l0, Jan 23, 2006.

  1. Yam4l0

    Yam4l0 New Member

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    Hi
    Need to change my 3LN fork seals.
    Does anybody know the correct dims for the seals?
    Should be 3 dims, inner dia, outer dia & thickness (eg 38 50 10)
    TIA
     
    Yam4l0, Jan 23, 2006
    #1
  2. Casso

    Casso New Member

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    deft use of the forum search facility returns:

    47.8mm x 37mm x 2.3mm for a 2KR:
    <!-- l --><a class="postlink-local" href="http://www.fzr250.com/viewtopic.php?t=1450&highlight=fork+seals">viewtopic.php?t=1450&highlight=fork+seals</a><!-- l -->


    35mm x 48mm x11mm for a 3ln:
    <!-- l --><a class="postlink-local" href="http://www.fzr250.com/viewtopic.php?t=1400&highlight=fork+seals">viewtopic.php?t=1400&highlight=fork+seals</a><!-- l -->


    Mind you, it seems strange that they're so different from each other, and makes me wonder if either of them are correct :p

    You could always do what I did in the end - approach your local yamaha shop and ask them for some fork seals for an FZR 250 3ln3.
     
    Casso, Jan 23, 2006
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  3. dave

    dave Well-Known Member

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    I just changed one on my 2KR and it was 48 x 35 x 11
     
    dave, Jan 23, 2006
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  4. Yam4l0

    Yam4l0 New Member

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    Thanx for the replies <!-- s:D --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt=":D" title="Very Happy" /><!-- s:D -->

    Just found out they are 38 x 50 x 11mm
     
    Yam4l0, Jan 26, 2006
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  5. TBone

    TBone New Member

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    last time I did a set for the 2KR I used 35 x 48 x 11
     
    TBone, Jan 26, 2006
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  6. say_wat

    say_wat New Member

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    Well I need to do my forks soon, and this is the only thread I've found with the dimensions (to aid in search: specifications specs size) of the fork seal.
    There still seems a bit of confusion on the size for the 3ln - what is it?

    I'm assuming for the 2kr it most probably is : 35 x 48 x 11 (as per TBone & Dave)

    I have a 3ln and we have: 35mm x 48mm x11mm (Casso's search - but It can't be the same size as a 2kr can it?)
    or as Yam4l0 "Just found out" they may be 38 x 50 x 11mm

    Anyone know for sure?

    PS: Anyone in melbourne planning to do their forks soon, perhaps we can get together and do it (the forks) together :p. This would be my first attempt with forks so am a little reluctant.
     
    say_wat, Dec 30, 2008
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  7. dave

    dave Well-Known Member

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    The 3LN forks are a bigger diameter than 2KR - go for the bigger seals. You can measure across the shiny top part of the fork to confirm the I.D. of the seal.
     
    dave, Dec 30, 2008
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  8. say_wat

    say_wat New Member

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    Just found out the exact specs for seals:

    2kr:
    Dimensions: 35x48x11
    Part No. 33-129-14 or 33-55-108
    Oil Filter:KN-145
    Cam Chain: 40-82R2010-112

    3ln:
    Dimensions: 38x50x10.5
    Part No. 33-129-17 or 33-55-112
    Oil Filter KN-303
    Cam Chain: 40-82R2010-112

    Online source: <!-- w --><a class="postlink" href="http://www.birdman.net.au/PDF/Birdman%20Catalogue%20-%20Spare%20Parts.pdf">www.birdman.net.au/PDF/Birdman%20Catalo ... 0Parts.pdf</a><!-- w -->
     
    say_wat, Jan 6, 2009
    #8

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