Question about Shimano 2008 Dura-Ace BR7800 Rear Road Brake Caliper Silver BR0782 Super Light Weight ! 157g Each !

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Shimano st 7900 shifter,left lever apart and how to reassemble

Left lever apart and how to reassemble. shimano st7900 10 speed levers 2009 model

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  • Anonymous Mar 14, 2014

    Took apart and need to reassemble

  • Anonymous Mar 26, 2014

    I want to adjust the reach or level of the shifters

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  • 18 Answers

You can download an exploded diagram of the 7900 series STI shifters here:

http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/ST/EV-ST-7900-2874E_v1_m56577569830670749.pdf

You can reassemble them according to this diagram.

Posted on Jul 07, 2009

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There are parts on a bike that are not meant to be taken a part, a shifter is on of them. Refer to Parktool.com Good luck

Posted on May 26, 2009

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Sorry, Shimano never intended those shifters to be taken apart and serviced, so they didn't release an exploded view. Here's a link to the orginial EV document. http://bernd.sluka.de/Fahrrad/Shimano/TM/ST-CT90_1995.gif

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http://www.ebay.com/itm/SHIMANO-SORA-8-SPEED-STI-3300-BRAKE-LEVERS-DUAL-SHIFTERS-8x2-8sp-/200651614761?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2eb7c4aa29

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I'd make sure it's a lever problem before embarking on that project. Is the cable actually being controlled by the lever?

A simple web search for "Shimano 200GS STI assembly" yields all kinds of resources.

Another good start would be http://www.shimano.com/

Other web searches like "how to.." work, too.

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The Tiagra STI shifters and all Shimano Shifters are not specifically designed to be rebuilt and are very difficult to put back together, I do not recommend it. You can do some basic disassembly and reassembly but a complete rebuild is very, very tricky. Some of the internal gear parts are not designed to come apart and go back together with standard tools.

What is the problem with your shifter that makes you want to rebuild? I would be happy to help you diagnosis the problem before you destroy the lever.

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