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‘71 K3 (self inflicted) shock problem

1219 Views 16 Replies 4 Participants Last post by  Dunny
Hey there guys- my first post although if overcome some issues reviewing earlier posts.

Rebuilding a ‘71 350 K3. Learning by making mistakes. Today while installing fork seals (which I achieved) I thought disassembly was achieved by removing the small Phillips head screw at the underside of the fork where it sits on the axel.
I had to use an impact driver to lose that screw - seems that was a stupid idea- the screw broke free but now turns freely without coming out.

I don’t know what I’ve damaged but I can tell that this fail will cause a leak - what is the solution… is there further disassembly still required or should I have that place where the screw is welded over; I’m at a loss - can anyone help?
Household hardware Bicycle part Tool Gas Wood
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. . . I just want to tighten as I’ve done the fork seals and that’s enough.

what I take from the reply’s is insert a dowel (or broom handle sized wooden tool) which will hold the inner tube steady while I tighten the screw.
Dunny,
Of course, do as you wish, but I would say that since you already broke the screw(s) loose and found yourself a wooden dowel tool, I would take the screws out and remove the tubes. I say that for a several reasons:
  1. Once the screws break loose, you should have no trouble removing them the rest of the way with just a plain screwdriver while you hold the wood dowel against the tube to stop it from turning. Here is what that little machine screw looks like:



  2. On my '70 SL350K0 forks that I recently rebuilt, there was so much muck and corruption in the lower sliders and in those cushion tubes that it took a long time to clean them even when they were fully disassembled. Yours may not be so bad, but mine was a basket case / long-term barn bike. I was using a recirculating parts washer with mineral spirits and a variety of brushes. It still took a long time to get them cleaned out. I never would have gotten them clean without taking them apart.
  3. If you remove the screws, you can anneal and reuse the copper seal washers. Take the washers out with a seal pick. Bend a little hook on the end of a piece of wire and put the washers on there. Hold the copper washers in the flame of a stove burner or a propane torch till they flash cherry red. Douse them in cold water. They will be soft and pliable and will seal as well or better than a new washer. That prevents getting the forks all back together and having the lower screws weep oil.
Stay optimistic!
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