Possible crisis averted?
I only had like 15 minutes to look at this on my lunchtime, but it seems like a positive outcome. I got a quality 18x1.5 thread chaser (Lisle or KD or something US made from my toolbox - forgot I had it). Liked it up and worked it in and out slowly. Worked it up, down, and sideways. It eventually went in.
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Remember when I pulled the new tensioner, there was a lot of silverfish powder. Galling? Vibration? I don’t know why…
It got caught in the oil, though I had cleaned the threads already.
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There was a small shard on the chaser, so it did have to deal with a bad thread someplace.
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I didn’t put the old tensioner (that’s just plugging the hole from dust) all the way in because I didn’t clean the threads properly yet. But it went in easily by hand turning the Allen key, just like before this debacle.
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So… go with it and re-install the new one with primer and 243? 243 only? 271? Dry? Oiled? Still tap and time sert or helicoil?
Thoughts?
Thanks!