On Sun, 08 Jan 2017 19:12:56 +0700,
John B wrote:
On Sun, 8 Jan 2017 02:33:29 +0000 (UTC), Theodore Heise
wrote:


Hi all,

I have an early 1990s Rodriguez tandem with a rear bottom bracket
in serious need of overhaul. The cranks flop severely.

I've pulled the cranks and the lock ring on the left side, but the
adjustable cup won't come out. It turns about a quarter turn, but
then gets too stiff to turn further. It has no flats for a wrench
instead having holes for turning with a pin spanner--so I'm unable
to put a lot of force on it.

I've soaked it with WD40, but still no joy. Any advice for me?

What I've had some success with in cases similar to yours, was,
after soaking the threads with a penetrating oil, to twist the
thing as far as you can, without trying too hard to break it,
and than back tight, than loosen and back tight. Hopefully each
time it will turn a little bit further.

Thanks! Guess I'll pick up some penetrating oil and keep after
it.

--
Ted Heise Bloomington, IN, USA