Damaged Oil Lock Piece (front forks)

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  • VTRauder
    • Mar 2026

    #1

    Damaged Oil Lock Piece (front forks)

    Tried searching, but maybe I'm the first one to have a damaged oil lock piece.

    The story: (to go right to the question/pics skip the next bit)
    One fork on my bike (82 GS1100E) was leaking and the other wasn't. So I decided to pull them down and replace the seals, and also install some sonic springs. So during the process the leaking side has a few issues right off the bat.
    I noticed that it looks like someone tried to change that side's seal at some point and said forget it, OR in changing that side messed up a bit and decided never to open it again.
    First thing the Hex head on the fork cap is a bit damaged. No problem, tried a few different brand sockets, found a brand that fit rather snug and hit it with the impact. Good to go. Then I notice that there are a couple sharp pits low on the tube, but that's life. A couple good swift pulls on the inner tube and I got the seal and tube out together, but the teflon coated sliders are pretty much done, so it seems that side has been neglected for a while or something.

    Oil Lock Piece issue:
    Finally I notice that there is no oil lock piece still in the outer tube, it's still jammed in the bottom of the inner tube. Somehow, one of the wave washers got wedged between the oil lock and the tube... sooo I pill at it to get it free and I didn't anticipate it being quite so soft, and between me pulling, and the jammed washer it's a little beat up in a couple spots.
    I've added pics bellow, and I was wondering if just sanding them down with some 1500 paper would work, or does it really operate as the tight seal? will the wave washers on top and the copper washer on the allen bolt at the bottom hold the oil ok? I'd replace it but apparently the part is back ordered.

    Any help would be great




  • Guest

    #2
    Those don't appear to be stock
    What am I looking at here? Is that the seal area?

    Comment

    • VTRauder

      #3
      Originally posted by chef1366
      Those don't appear to be stock
      What am I looking at here? Is that the seal area?
      From what I can see in the service manual they are stock, the 1100E just seems to be a little different than the others internally. But I thought the same thing at first too, usually they are thick slug looking deals

      some pics from further out to give some perspective



      Comment

      • Guest

        #4
        Originally posted by chef1366
        Those don't appear to be stock
        What am I looking at here? Is that the seal area?
        I beleive it is part no# 17 on the micro fish I can't seem to copy and paste the micro fish but yes it is a stock part.

        Comment

        • salty_monk
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Oct 2006
          • 14013
          • London, UK to Redondo Beach, California

          #5
          Yes stock part... All the forks have something sort of similar. That piece is there to redirect oil so that it has to go through the adjustable rebound damping circuit on that fork I think.

          If I was you I would smooth them out & re-fit, I can't see any obvious reason why not. I've not done it myself though.
          1980 GS1000G - Sold
          1978 GS1000E - Finished!
          1980 GS550E - Fixed & given to a friend
          1983 GS750ES Special - Sold
          2009 KLR 650 - Sold - gone to TX!
          1982 GS1100G - Rebuilt and finished. - Sold
          2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

          www.parasiticsanalytics.com

          TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

          Comment

          • Guest

            #6
            The copper washer on the allen bolt is what seals the oil in the fork.
            I am not sure what the wave washer does, but there is often 2 or 3 washers there on top. it may be there to allow oil to pass through....dunno.
            i think that that aluminum piece along with the wave washer(s) provides a hydraulic cushion when the fork bottoms,
            it looks like po damage, though.
            I also would just clean it up and re-use it.( how often do you bottom the fork anyway?)
            suzuki calls it a "hydraulic lock" or something like that, race tech calls it a " bottoming cone".
            I am no expert, I have just been reading about this lately as I intend on installing cartridge emulators in the 1150 fork this spring, mainly to delete the PDF valves.
            Last edited by Guest; 03-04-2013, 11:45 PM.

            Comment

            • VTRauder

              #7
              Thank you both for the info, I feel much better about re installing it now.

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