third arm seals - NCRS Discussion Boards

third arm seals

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  • Guy M.
    Very Frequent User
    • November 1, 1993
    • 499

    third arm seals

    Are they supposed to fit loosely? I got one for my 54 from CC and it just floats in the slot. Is this the way it sould be? Thanks as always
  • John L.
    Expired
    • February 1, 2005
    • 207

    #2
    Re: third arm seals

    Well I have the same question as well.....assembled the entire frame on my 54 and installed the rubber ring and it really seemed useless as a seal since it would flip out of place with ease when the wheels turned. Almost as if the bearing was not seated properly in the third arm housing. I purchased a new bearing and race as well. We both may be looking for the same advise...

    Comment

    • Mike M.
      NCRS Past President
      • May 31, 1974
      • 8365

      #3
      Re: third arm seals

      probably doesn't matter whether the seal is tight or loose on the 3rd arm housing as its purpose is to prevent dust/dirt from entering. the bearings i've been using for years are sealed bearings so the seal really is useless. the seals i have are tight on the 3rd arm housing but i bought them 20-30 years arg(from a source i can't recall). mike

      Comment

      • Guy M.
        Very Frequent User
        • November 1, 1993
        • 499

        #4
        Re: third arm seals

        Im glad to see Im not the only one, I too thought the 3rd arm wasnt seated properly. The original seal is 1/8 inch thick and of rubber. I tried to find some 1/8 inch rubber but to no avail. Almost looks like an oil filter ring is of the same thickness. I was going to try 3/16 material if I can find it but like Mike says, does it really matter if its a totally sealed bearing??? Thanks Mike. Guy

        Comment

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