chorus crank dust cap removal (Dust cap)
06-12-10, 09:14 PM
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chorus crank dust cap removal (Dust cap)
I am trying to strip a bike with Campagnolo Chorus 8-speed. (late 90s?) without the benefit of another of these DARN proprietary tools.
I am stymied by the dust ring or cap. on on side I managed to unscrew it's reverse thread. but only a bit. for the next 30 minutes I went through a stupid dance of a little bit of dust ring CW, a little bit of center bolt CCW, a little bit of dust ring CW, a little bit of bolt CCW.... until eventually every came loose and I was able to extract the crank.
the other side dust ring is more obstinate. I can't loosen it to start this CW CCW CW CCW dance.
am I missing something? is this easier than it seems? I've read something about some Campy "Self Extracting Crank" system.
should I just be leaning on the 7mm allen key and somehow the stupid dust ring will come out? I can only imagine stripping the darn thing.
I am stymied by the dust ring or cap. on on side I managed to unscrew it's reverse thread. but only a bit. for the next 30 minutes I went through a stupid dance of a little bit of dust ring CW, a little bit of center bolt CCW, a little bit of dust ring CW, a little bit of bolt CCW.... until eventually every came loose and I was able to extract the crank.
the other side dust ring is more obstinate. I can't loosen it to start this CW CCW CW CCW dance.
am I missing something? is this easier than it seems? I've read something about some Campy "Self Extracting Crank" system.
should I just be leaning on the 7mm allen key and somehow the stupid dust ring will come out? I can only imagine stripping the darn thing.
06-12-10, 09:23 PM
#2
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It sounds like the "dust caps" are really self extracting caps that are secured to the crank bolts somehow. Backing out the crank bolt should pull the arm off the bottom bracket without any need to touch the dust cap, at least that's how at the self extracting crank bolts I've ever used have worked.
06-13-10, 09:24 AM
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ahhah
many thanks. I'd not used the SE system before. (whenever I have forced something, I've usually broken it so I assumed that when it got tight, I'd bust something.)
so, chain rings side is now off.
But I have managed to somehow remove and seperate the dust ring and the bolt. and I know see that I have to get them back together.
any tips on how I get the bolt back into the dust ring?
many thanks. I'd not used the SE system before. (whenever I have forced something, I've usually broken it so I assumed that when it got tight, I'd bust something.)
so, chain rings side is now off.
But I have managed to somehow remove and seperate the dust ring and the bolt. and I know see that I have to get them back together.
any tips on how I get the bolt back into the dust ring?
