Question about Shimano Cycling
Assembly manual for Shimano Extremer mountain bicycle MBX-B
Posted by Anonymous on
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Posted on Jan 02, 2017
You can download an exploded diagram of the 7900 series STI shifters here:
You can reassemble them according to this diagram.
Posted on Jul 07, 2009
SOURCE: Shimano Altus gears
The old lubricant has gummed up. It needs a good cleaning and relubrication.
"STI shifters gum up after years of use. I've had good luck with this method and since it's nearly free it's probably worth a shot--
"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."
Posted on Jul 17, 2009
scroll down to Nexus
Posted on Jul 26, 2009
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