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Old 04-26-07, 10:24 PM   #1
Cyclologist
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Master pin protuding in Shimano 10 spd chain

As the title states, the master pin (the one pin Shimano says not to touch) in a Shimano Ultegra 10 spd chain is protruding to one side, so much so the other side is flush, if not slightly recessed. This can't be good. Should I give it a nudge with a chain tool or is this chain toast? My other option is to get rid of the offending link and replace with backup links I have laying around along with the appropriate replacement pins.
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Old 04-26-07, 10:36 PM   #2
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just take the chain tool and push the chain back in. The second shelf on the park chain tool works well for this.
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Old 04-27-07, 07:27 AM   #3
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It sounds like it wasn't installed properly to begin with so use your chain tool to seat it completely. Done right, it should not create a stiff link. Shimano says not to push it out to "break" the chain for cleaning but it should be installed correctly at first.
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Old 04-27-07, 08:51 AM   #4
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Well, I pushed it in in the right direction and it isn't stiff. I'll have to keep an eye on it to make sure it isn't wiggling out again.

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Originally Posted by HillRider
It sounds like it wasn't installed properly to begin with so use your chain tool to seat it completely. Done right, it should not create a stiff link. Shimano says not to push it out to "break" the chain for cleaning but it should be installed correctly at first.
I remember taking note of this pin when I first got the chain, and I distinctly remember it being fine. There were a few unexplained drive-train mishaps which might have caused the pin to wiggle in one direction. My only concern now is whether the side that became flush, if not recessed, still has a fat head to keep it from going through all the way and that the pin has not become 'accustomed to' and 'prefer' the wrong position.
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Old 04-27-07, 10:05 AM   #5
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I'd adjust the pin to center, and make sure you don't create a stiff link. Assuming all goes well, watch the pin to make sure it doesn't move again. If it does, get a master link of some kind and ditch the pin all together.
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