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Balky Ultegra STI front derailleur lever(5 posts)

Balky Ultegra STI front derailleur leverridgerider
Feb 10, 2002 2:56 PM
It is becoming increasingly difficult to shift into larger chainrings with my Ultegra STI lever. I have to push harder than usual to get the front derailleur to move at all. Downshifts are fine, leading me to believe that the cable travel from the lever to the derailleur is OK. I'm afraid to force the lever too hard. A friend says cold weather is to blame and advocates flooding the lever with spray lube. This sounds really oily and I'm always skeptical of fixes that involve duct tape, ball peen hammers or WD-40! Any ideas on how to loosen this lever?
re: Balky Ultegra STI front derailleur leverrfsurfer
Feb 10, 2002 3:31 PM
In this case, your friend is more than likely right. It isnt directly because of the cold, but over time, the dirt and grime collect in there and with the help of the cold, things get gunked up. So here's the fix, WD-40 every single orfice you can find (on the shifter of course) and let it sit for awhile. WD-40 will work as a degreaser and loosen things up...later on, take an airgun and blow everything out that you sprayed in. Your shifting will be as good as new, or at least as good as its ever gonna get, assuming you've put some wear on the parts....
re: agree with rfsurferpa rider
Feb 11, 2002 9:55 AM
I couldn't hit my big chainring two weeks ago when riding in 20 degree weather. I found the road grit I'm getting binded my front derailer. I have a lowend tiagra, but decided I'll replace it in March.

I just screwed my limit screws in (clockwise) to free up the grit and sprayed with triflow. I was lucky that my derailer broke loose to allow me to readjust it. I did this to a MTB derailer and found it worked better when I just bought a new one.

Replacing the cable and housing alone may resolve your problem, but if the spring is dirty you need to give the whole derailer a good blast. MTB derailers get alot of mud, so we expect them not to last two or more seasons.

Hope this helps.
re: Balky Ultegra STI front derailleur leverChen2
Feb 10, 2002 3:44 PM
You need a new cable and maybe a new cable housing.
re: Balky Ultegra STI front derailleur leverbear
Feb 10, 2002 8:22 PM
check for any missing screws,,sometimes the little screw under the shifter falls off and shifting becames a pain,,is a metric #4 4mm x 8mm.