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Worn Limit Screw Head

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Old 03-12-09, 04:30 PM
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Worn Limit Screw Head

Help! Very badly worn screw head! Tried using an extractor bit but the screw just seems to be too fragile.
Any ideas?
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Old 03-12-09, 05:14 PM
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If you can remove the screw with an extractor without damaging the threads it is screwing IN to it is easy to find another screw to replace it. Is this a derailuer limit screw or a brake screw?
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Old 03-12-09, 05:22 PM
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It's a derailleur limit screw. The problem is getting it out. I'll be trying again a bit later but it just seems to be too fragile.
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Old 03-14-09, 01:16 PM
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Cut a slot across the top of the head with either a dremel or fine toothed hack saw and then just use a flathead screwdriver.
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Old 03-14-09, 01:24 PM
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Just curious is it Shimano? I think they make their limit screws out of an alloy of butter.
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Old 03-14-09, 01:33 PM
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Originally Posted by gooch
Just curious is it Shimano? I think they make their limit screws out of an alloy of butter.
Warm butter.

Just to make sure, you have the derailleur in the middle of the gear range so that it is not pushing against the limit screw and keeping it from turning, yes?
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Old 03-14-09, 01:36 PM
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Originally Posted by gooch
Just curious is it Shimano? I think they make their limit screws out of an alloy of butter.
It is indeed. DA front.
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