Hammer flange question

[William R. Monroe]

MessageHI Geoff,

First I'd lube, see what that gives you.  It may be all you need.

I might try using alcohol/water second, but probably would just repin, if necessary.  I think you could just as easily argue to use alcohol/water and shrink the bushings first to see where that brings you, it's just not what I choose to do.

Then, depending upon what is revealed by these treatments, repin as needed.

When you consider what each treatment is trying to accomplish, it is more revealing to you, I think.  Lubing is just that, reducing friction, without changing dimensions.  Both Alcohol/Water and Repinning aim to change the size of the bushing in relation to the pin.

Best,
William R. Monroe


  I understand that there are three ways to deal with too-tight flanges:
      1) repin - remove the old pin, replace and/or ease the bushing and repin
      2) lubricate - with Protek, Goose-Juice, Naphtha+Silicon, etc.
      3) ease - Alcohol and water

  What would you consider to be the requirements for any of these treatments? In other words, why and when do you choose one of these treatments over the others?

  In the case of this Young Chang, the bushings and pins are clean, showing no signs of verdigris. 

  Looking forward to the discussion.

  -- Geoff Sykes
  -- Assoc. Los Angeles
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