TAP SIZE

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Looks like someone took a hammer to it, .... .but why?
That's the riddle. A machinist in a bigassed hurry, getting it set up in a fixture is my first guess. But, the dead blow plastic hammer is generally the go-to. We may not ever know.

Sadly, I've seen it before on a twin spindle, twin turret CNC turning center I was rebuilding. BIG radius ball pein hammer marks, like a 32oz. size, marks on EVERY precision mating surface. I attributed it to a very disgruntled maintenance staff. (almost understandable, as nothing is cleaned/inspected/PM'd until it grinds to a halt.)
 
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I can see why that would have made it difficult to start the bolt. I wonder what caused it? It actually looks like two hammer blows. How did you clean it up?

I hope you got treated to one or two of your favourite IPA's ;)
I used the bolt to "reform" the damaged first thread. Half a dozen greased bolt trips in-out, cleaning and inspecting. Q-tips, flashlight, paper towels, acetone, razor blade, flat mill bastard

It was offered by my most gracious host.... but too early, workday not even half done. Soon though...
 
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Thanks again to Concours for fixing the thread, nice tight seal on the rocker oil feed now. No IPA's, but a great Bagel sandwich from Best Bagels in Georgetown Ma.
For some reason the post with the link to the "corrected" shop manual is no longer on my feed. I that could be re=posted, it was an email address, I would appreciate it.
 
If these are made in the correct sizes it would have been the ideal tool in this kind of situation. Expanding "Back-Out" taps...

TAP SIZE
 
Thanks again to Concours for fixing the thread, nice tight seal on the rocker oil feed now. No IPA's, but a great Bagel sandwich from Best Bagels in Georgetown Ma.
For some reason the post with the link to the "corrected" shop manual is no longer on my feed. I that could be re=posted, it was an email address, I would appreciate it.

Our https://nneno.org/ group ALWAYS eats well!

As a side benefit, we got to scheme about riding the Rangely, ME area this summer.

Standing down for now..... winter finally came.

2A92D66F-CD78-4400-9C78-9E6752113C0E.jpeg

 
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