Re-greasing stuck and damaged square tapered bottom bracket
01-22-22, 03:41 PM
#26
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4. For the stem if I am correct in what you are saying...you loosened it until the stem moved in the steerer tube a little then the bolt would no longer turn to the left?
if you somehow tightened it or the plug got stuck, you can put an Allen wrench in the bolt and rap it with a rubber mallet. That’s how I unstick most stems.
5. Bar ends...listen to the experts above. They know their stuff.
if you somehow tightened it or the plug got stuck, you can put an Allen wrench in the bolt and rap it with a rubber mallet. That’s how I unstick most stems.
5. Bar ends...listen to the experts above. They know their stuff.
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
01-22-22, 03:45 PM
#27
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Lastly, for what it’s worth...it took me a month to get a plastic cup cartridge BB from a steel Specialized Hard Rock.
definitely upload photos of the problem areas!
definitely upload photos of the problem areas!
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
01-22-22, 04:05 PM
#28
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3) As I was trying to get the quill stem (It is a Shimano Dura-ace quill stem with the hidden hex bolt far down) out, I loosened the hex bolt and it suddenly became stuck. I managed to get the stem out with a lot of effort but the hex bolt is still stuck, can't loosen or tighten. Tried unscrewing the expander but that too would not budge. Any ideas?
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01-22-22, 04:09 PM
#29
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4) Bar end shifters basically rusted in place on the drop bars. Right shifter's hex bolt is rounded out, the left won't budge even after 2 days of being soaked in WD-40. Can I just drill the bolts out on these? I don't really need to use them as the bike also came with down tube shifters.
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01-25-22, 01:46 AM
#30
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Thread Starter
...if the stem is out, as you state, I would dribble the ATF/acetone mix pentrant on the interface between the expander and the stem bolt. Let it sit for a while, grab the expander if there's enough of it exposed, using a plier or a curved vise grip, then insert a decently sized allen wrench into the stem bolt head and twist it loose.
I would post pictures of the stem but I need a couple more posts to be able to upload pictures. Will get back to this.
01-25-22, 01:50 AM
#31
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Thread Starter
...in a similar, hopelessly corroded situation, I have once simply shortened the bar ends, using a tubing cutter, and thrown away the bar end and shifter that drops off. In another case, I just tossed the whole assembly, and used a different bar. I have a lot of surplus bars I've saved over the years, but you might not be as fortunate.
01-25-22, 01:54 AM
#32
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Thread Starter
4. For the stem if I am correct in what you are saying...you loosened it until the stem moved in the steerer tube a little then the bolt would no longer turn to the left?
if you somehow tightened it or the plug got stuck, you can put an Allen wrench in the bolt and rap it with a rubber mallet. That’s how I unstick most stems.
5. Bar ends...listen to the experts above. They know their stuff.
if you somehow tightened it or the plug got stuck, you can put an Allen wrench in the bolt and rap it with a rubber mallet. That’s how I unstick most stems.
5. Bar ends...listen to the experts above. They know their stuff.
