Bicycle Mechanics - Front derailleur outer limit screw not working?

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theblackbullet
09-04-11, 01:23 PM
I'm trying to adjust the tiagra triple front derailleur, but for some reason, I am unable to get the outer limit screw set. No matter how much I turn the screw or which direction, I am getting no movement from the derailleur. The inner limit works just fine, but I am stumped with the outer. Any idea what could be going on here?

Retro Grouch
09-04-11, 02:18 PM
If in doubt, don't.

I could train a chimpanzee to adjust a rear derailleur but fronts can be something else. In a nutshell, there are several possible front derailleur adjustments and they have to be done in a certain order because each one affects the subsequent adjustments. Limit screw adjustments, once set, seldom need tweaking.
dsbrantjr
09-04-11, 03:14 PM
bullet: Follow the directions on the Park Tool Web site from start to finish without skipping any steps - http://www.parktool.com/blog/repair-help/front-derailleur-adjustments
Hint: If the shifter is not pulling the derailleur against the high limit screw, the screw adjustment will have zero effect.