Question about Mountain Shimano Altus Front Bike Derailleur Bicycle Part 78

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I bought a mountain bike with Shimano Altus gears over the net with most of the assembly in place. Have indexed the rear gears which work fine. Did the same for the front deraileur works changing up but misses the second gear when changing down. Any ideas.

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There are a couple of possible problems. You can try backing off the cable tension a little bit at the shifter and running back and forth through the gears adjusting as you go till it hits 2nd coming down.You can also try backing off the High limit screw on the derailleur. This will allow the shift to start a little farther from the bike hopefully hit 2nd. Hope this helps.

Posted on Sep 14, 2010

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"Get a can of WD-40 or a similar light solvent/oil solution. Pull the brake lever back to the bar to partially expose the shifting mechanism and generously hose down the interior with your solvent. I mean really get it in there from all directions, using the little red spray tube if possible. Let it sit for a while and then drizzle in some light oil like Tri-Flo or similar. Then wipe down the exterior of the shifter with some Simple Green or other degreaser (to keep the overspray off your hands).

"I've rescued two sets of STI-type shifters with this method. Hope you get your problem solved one way or another, because new Dura-Ace sure ain't cheap."

source: http://www.bikeforums.net/archive/index.php/t-83743.html

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