Fork seal replacement

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  • Roostabunny
    • Feb 2026
    #1

    Fork seal replacement

    Hey all -

    I was trying to find a 9mm nut for the end of a fork tool - to hold the damper in place while loosening the hex bolt to release it - and I can't seem to find any locally.

    Any tips? Would a 5/16" (7.9375mm) nut possibly do the trick?

    Thanks!
    Tags: None
    • hampshirehog
      Forum LongTimer
      Past Site Supporter
      • Oct 2007
      • 12675
      • Hampshire. UK
      #2
      Try a broom handle pushed in hard. Usually works.
      79 GS1000S
      79 GS1000S (another one)
      80 GSX750
      80 GS550
      80 CB650 cafe racer
      75 PC50 - the one with OHV and pedals...
      75 TS100 - being ridden (suicidally) by my father

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        • SqDancerLynn1
          #3
          SAE nut will work just fine, sizes? Don't quote me, Just loaned my tool to Cliff. takes a 3/4" wrench as I recall
          Last edited by Guest; 04-29-2010, 02:06 PM.

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            • Roostabunny
              #4
              Ha -

              So I take it exact sizing is not the point. Just hold from turning without breaking it?

              Very good - I can manage that, thanks!

                Comment

                • Guest
                  #5
                  Originally posted by hampshirehog
                  Try a broom handle pushed in hard. Usually works.
                  Worked for me..

                    Comment

                    • Guest
                      #6
                      Originally posted by Roostabunny
                      Ha -

                      So I take it exact sizing is not the point. Just hold from turning without breaking it?

                      Very good - I can manage that, thanks!

                      A little heat to soften the locktite on the allen bolt helps bunches!

                        Comment

                        • Guest
                          #7
                          I used heat, an electric impact and leave the spring in for tension.

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                            • Baatfam
                              Forum LongTimer
                              Past Site Supporter
                              Super Site Supporter
                              • Jul 2006
                              • 18761
                              • Knoxville, TN
                              #8
                              Air impact zinged them out just fine for me...

                              Used a spark plug socket reversed, (the extension goes in the spark plug side), with a couple of extensions to tighten...
                              Last edited by Baatfam; 04-29-2010, 04:23 PM.
                              Bob T. ~~ Play the GSR weekly photo game: Pic of Week Game
                              '83 GS1100E ~ '24 Triumph Speed 400 ~ '01 TRIUMPH TT600 ~ '67 HONDA CUB

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                                • Big T
                                  Forum LongTimer
                                  Past Site Supporter
                                  Super Site Supporter
                                  • Mar 2005
                                  • 12401
                                  • West Slope, OR
                                  #9
                                  Originally posted by Roostabunny
                                  Hey all -

                                  I was trying to find a 9mm nut for the end of a fork tool - to hold the damper in place while loosening the hex bolt to release it - and I can't seem to find any locally.

                                  Any tips? Would a 5/16" (7.9375mm) nut possibly do the trick?

                                  Thanks!
                                  That's 19mm, I'm sure

                                  Mine is
                                  1978 GS 1000 (since new)
                                  1979 GS 1000 (The Fridge, superbike replica project)
                                  1978 GS 1000 (parts)
                                  1981 GS 850 (anyone want a project?)
                                  1981 GPZ 550 (backroad screamer)
                                  1970 450 Mk IIID (THUMP!)
                                  2007 DRz 400S
                                  1999 ATK 490ES
                                  1994 DR 350SES

                                    Comment

                                    • DanTheMan
                                      #10
                                      The wrench size for the nut you need is 19mm or 3/4". Using a long 1/2" threaded rod, lock two nuts together, put a pair of vice grips on the other end, allen wrench on the bottom and you're home free!

                                        Comment

                                        • Roostabunny
                                          #11
                                          Aside from "DUH" I don't know what to say.

                                          Of course you're right. I thought that 5/16" nut looked small!

                                          So 3/4" is about perfect (as mentioned by Lynn) and I drove a long way to buy the wrong dang nut.

                                          Wouldn't be so bad if I hadn't spouted off to Nessism earlier today about being detail-oriented.



                                          Originally posted by Big T
                                          That's 19mm, I'm sure

                                          Mine is

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