I broke the clutch cover mounting tab HELP!

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  • Gs1000g
    • Feb 2026

    #1

    I broke the clutch cover mounting tab HELP!

    I was trying to get the Gs1000 back together after putting in a new thrust bearing. The bolt snapped off in the crank case, I used an easy out but it damaged the threads. I tried to helicoil and re tap but it snapped. So what are my options here? Any advice is appreciated

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  • Greg B
    Forum Mentor
    Past Site Supporter
    • Sep 2005
    • 894
    • Irvine, CA

    #2
    So, you have a broken tap down in that hole?
    How deep into the hole is the broken tap?
    Not a lot of options. And none I can think of that don't require at least pulling the motor.
    The Three Horsemen
    '85 GS1150ES (Current Income Eater)
    '83 GS1100ES
    ?77 XLCR

    "Never ride faster than you can see. Besides, it's all in the reflexes."
    Porkchop Express

    Comment

    • fastbysuzuki
      Forum Mentor
      Past Site Supporter
      • Nov 2012
      • 996
      • Wyre, Lancashire.uk

      #3
      Originally posted by Gs1000g
      I tried to helicoil and re tap but it snapped.

      https://imgur.com/a/p5bvpjv
      Are you saying the tap snapped or the section of the casting snapped as it looks in the pictures, either way as said already pulling the motor looks the only viable option.
      if you feel brave try breaking the already cracked piece off remove anything broken in the hole clean throughly and fill and mould with some good metal epoxy and drill and tap.
      The big guy up there rides a Suzuki (this I know)
      1981 gs850gx

      1999 RF900
      past bikes. RF900
      TL1000s
      Hayabusa
      gsx 750f x2
      197cc Francis Barnett
      various British nails

      Comment

      • Gs1000g

        #4
        There isn’t a tap down the hole, when I tapped it and put in the helicoil it broke the casting. I called my uncle and sent photos, he is a professional fabricator and he said he could weld this no issues so here is hoping to that being true

        Comment

        • chuck hahn
          Forum LongTimer
          Past Site Supporter
          • May 2009
          • 25918
          • Norman, Oklahoma

          #5
          If the bolt can be removed the area can be TIG welded up, filed smooth at the mating surface, redrilled and retapped. BUT if it were me i wouldnt feel bad about just filling whats there with JB Weld, file it smooth, and use some Threebond 1207B in that area on each side of the gasket. Install the cover and let set overnight before adding oil....ride away. Go a few inches each side of the hole with the 1207B and it probably wont leak.
          MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
          1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

          NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


          I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

          Comment

          • Grimly
            Forum Guru
            Past Site Supporter
            Super Site Supporter
            • Sep 2012
            • 5764
            • Ireland

            #6
            Originally posted by Gs1000g
            There isn’t a tap down the hole, when I tapped it and put in the helicoil it broke the casting. I called my uncle and sent photos, he is a professional fabricator and he said he could weld this no issues so here is hoping to that being true
            A good aluminium welder could fill that and finish it flush / remake the necessary shape.
            Dave
            '79 GS850GN '80 GS850GT
            Only a dog knows why a motorcyclist sticks his head out of a car window

            Comment

            • Greg B
              Forum Mentor
              Past Site Supporter
              • Sep 2005
              • 894
              • Irvine, CA

              #7
              Originally posted by Gs1000g
              There isn’t a tap down the hole, when I tapped it and put in the helicoil it broke the casting. I called my uncle and sent photos, he is a professional fabricator and he said he could weld this no issues so here is hoping to that being true
              Your uncle no doubt knows that the material must be scrupulously clean. And be sure he grounds as close to the repair as possible. I assume you're going to attempt this without pulling the motor, or disassembling it.
              The Three Horsemen
              '85 GS1150ES (Current Income Eater)
              '83 GS1100ES
              ?77 XLCR

              "Never ride faster than you can see. Besides, it's all in the reflexes."
              Porkchop Express

              Comment

              • Gs1000g

                #8
                Originally posted by Greg B
                Your uncle no doubt knows that the material must be scrupulously clean. And be sure he grounds as close to the repair as possible. I assume you're going to attempt this without pulling the motor, or disassembling it.

                Yes he has the entire set up, he used to travel the US welding Stainless steel tubing. The motor is going to be staying in the bike, i will put it on a bike stand and elevate it as much as possible.

                Comment

                • Nessism
                  Forum LongTimer
                  GSResource Superstar
                  Past Site Supporter
                  Super Site Supporter
                  • Mar 2006
                  • 35790
                  • Torrance, CA

                  #9
                  I'd pull the clutch hub out. That will give much better access for the welding and subsequent cleanup work.
                  Ed

                  To measure is to know.

                  Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                  Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                  Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                  KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                  Comment

                  • chuck hahn
                    Forum LongTimer
                    Past Site Supporter
                    • May 2009
                    • 25918
                    • Norman, Oklahoma

                    #10
                    And stuff the cavity with WET rags while he is welding and grinding. Catch all the flying crap you can.
                    Last edited by chuck hahn; 04-22-2019, 04:57 PM.
                    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                    Comment

                    • Guest

                      #11
                      Originally posted by Gs1000g
                      I was trying to get the Gs1000 back together after putting in a new thrust bearing. The bolt snapped off in the crank case, I used an easy out but it damaged the threads. I tried to helicoil and re tap but it snapped. So what are my options here? Any advice is appreciated

                      https://imgur.com/a/p5bvpjv
                      Posting for your future reference, and for anyone that happens to run across this thread in the future, the only place EZ-Outs should be in the shop is in the garbage pail. Get a decent set of left handed drill bits, some quality spiral screw extractors (I like Irwin-Hanson), and a hand tap (don't use extractors in your drill, ever). Ive used these for everything from boogered up carb pilot jets to sheared head bolts, and never had an issue with screwed up threads.

                      FWIW my fix would probably be very redneck. JB-Weld the broken off piece back on, and then fill the cavity with JB-Weld too. Drill and tap, and forget about it. As you posted above, welding is probably a more professional fix if done properly.

                      Comment

                      • Gs1000g

                        #12
                        Originally posted by Rust_to_Redemption
                        Posting for your future reference, and for anyone that happens to run across this thread in the future, the only place EZ-Outs should be in the shop is in the garbage pail. Get a decent set of left handed drill bits, some quality spiral screw extractors (I like Irwin-Hanson), and a hand tap (don't use extractors in your drill, ever). Ive used these for everything from boogered up carb pilot jets to sheared head bolts, and never had an issue with screwed up threads.

                        FWIW my fix would probably be very redneck. JB-Weld the broken off piece back on, and then fill the cavity with JB-Weld too. Drill and tap, and forget about it. As you posted above, welding is probably a more professional fix if done properly.

                        I say easy out but it was the spiral screw extractor. I tried to use the spiral screw extractor but the bolt was not a flat clean break, i hit it with the punch to try and get a center hole so i could get the extractor in it, but as i twisted it out came the aluminum threads. I do need a set of left handed drill bits though that maybe would have prevented this. If my uncle does not come through JB weld may be the next viable option.

                        Comment

                        • Guest

                          #13
                          Originally posted by Gs1000g
                          I say easy out but it was the spiral screw extractor. I tried to use the spiral screw extractor but the bolt was not a flat clean break, i hit it with the punch to try and get a center hole so i could get the extractor in it, but as i twisted it out came the aluminum threads. I do need a set of left handed drill bits though that maybe would have prevented this. If my uncle does not come through JB weld may be the next viable option.
                          I'm confused with your wording here, you drilled a hole for the spiral extractor and that's when you boogered up your threads? Or you didn't drill a hole?

                          Comment

                          • Gs1000g

                            #14
                            Sorry for the poor wording I was in class.

                            I was torquing down the clutch cover, the bolt snapped down in the hole but wasn't a clean flat break. I then used a punch to try and make a center hole in the bolt before I then drilled out the bolt and inserted the extractor when I was backing out the bolt it brought the threads with it.

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