Bike Forums - 7 Speed Shifter Problems

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wooljersey

05-17-13 08:38 PM

7 Speed Shifter Problems

I have Shimano 7 Speed Light Action SIS shifters. The front is friction triple. For some reason even if I tighten the front shifter bolt as tight as I can by hand the front derailleur spring moves the shifter on it's own. Any suggestons?

HillRider

05-17-13 08:45 PM

Are these downtube shifters? If so, perhaps the mounting bolt is slightly too long and bottoming in the boss' threads before getting tight enough. Or you left out a spacer washer somewhere.

wooljersey

05-17-13 08:54 PM

Yes, they are downtube shifters. I hadn't even thought of that. I just rebuilt the bike after getting S&S couplers put on the frame. Thank you!

Quote:

Originally Posted by HillRider (Post 15638330)

Are these downtube shifters? If so, perhaps the mounting bolt is slightly too long and bottoming in the boss' threads before getting tight enough. Or you left out a spacer washer somewhere.

rc211

05-19-13 10:29 AM

just rebuilt my suntour power shifters- same thing 1 washer on backwards. what helped me was an exploded view of the part.

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