Question about Shimano Xtr Mountain Bike Dual Control Brake/Shift Levers
Posted by Anonymous on
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Posted on Jan 02, 2017
A few suggestions:
Lube/replace your cables and housings. If your housings are getting rusty on the inside, it will prevent the tension in the spring of the calipers from returning the brake levers to "home" position. Also, dura-ace levers have an internal return spring that is prone to breaking or coming off its peg (this can't be repaired without disassembling the lever).
Make sure your calipers are clean and move freely, and have sufficient spring tension to return to "home" position.
Be careful not to get lubricant on the braking surfaces, obviously.
As an experiment, remove the wheel and pinch the calipers together with your hands. Then, check to see how loose the brake lever is.
Posted on Jul 01, 2009
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: I have replaced the cable
All shimano derailleurs have two small screws located on the mechanism itself that allow you to adjust the position of the derailleur relative to the gears. The top one adhusts how far towards the wheel the chain can go and the bottom of the two adjusts how far towards the stop it goes.
Put the bike on a stand or just prop it up so the rear wheel can spin freely when you turn the pedals by hand
Put the shifter in the highest gear and turn the pedals, the adjust the top screw until it enters the top gear, you may need to adjust the cable tension also to do this.
Once you have it going easily into and out of the top gear adjust the bottom screw so that it easily goes into the bottom gear.
You should be done! Don't forget that for the first few rides the cable will stretch out a little so you may need to tinker with those screws a couple more times.
Hope this helps:)
This website might help you also http://sheldonbrown.com/derailer-adjustment.html
Posted on Jul 18, 2011
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