Join Date: Jun 2006
Bikes: 03 Raleigh Professional (steel)
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Well, I took it down to 25 then 30 ft-lb. It turned quite a lot between the two, 20-30°. A metal adapter won't turn nearly that much (at least, not one with clean threads), which indicates to me that something is stretching - probably the rim distorting. So I didn't continue to 35 ft-lb.
If anyone has the instructions that came with a UN53 or similar Shimano with a plastic adapter, I'd appreciate you checking to see if it differentiates the two.
I'd also welcome a copy of the .pdf file of the Service Instructions and/or Exploded Drawings for any Shimano square taper cartridge BB. PM me if you have one, please.
Stupidity got us into this mess - why can't it get us out?
- Will Rogers