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

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Sticking rear shimano ultegra brake caliper

How to strip down clean and rebuild

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That rod (bolt) thru the middle that holds ur brake together gets too tight. You can disassemble and clean it or just loosen the nut on the front and watch em snap back to open position

Posted on May 08, 2009

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Tswinter1's got the most likely cause of the brake issue--the nuts are too tight to the brake arms. There should be two nuts on the end of the bolt--you'll need two wrenches to adjust them right. Tighten the inner one until you get the slop out of the brake arms, then back it off about a quarter turn. Then, holding it in place, tighten the outer nut against it, locking them together.

You might also try unhooking the springs from the brake arms and bending them upward and away from the brake arms a little to give 'em more pull. Don't go too far, though--they can snap.

Posted on Jul 07, 2009

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My shimano ultegra left shifter is super stiff/hard to push in; what is going on?

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  • Take the bicycle in an area free of cars and obstacles, such as an open parking lot. Concentration is required when learning to use Ultegra shifters or any other type of bicycle shifter.
  • 2 Mount the bicycle and rest both hands on the proper Ultegra hand control. The left-hand control operates the front derailleur. The right-hand control operates the rear derailleur.
  • 3 Start pedaling, smoothly and evenly. While pedaling is crucial to propelling the bicycle forward, it is also necessary when shifting the derailleur. Pedaling forces the chain to rotate. The chain must rotate before it can transfer to another gear.
  • 4 Push the outside right Shimano Ultegra lever in toward the bicycle. The rear derailleur will shift the chain to a smaller rear gear.
  • 5 Push the inside right Shimano Ultegra lever in toward the bicycle. The rear derailleur will shift the chain to a larger rear gear.
Rear Ultegra Derailleur Control
  • 1 Push the outside left Shimano Ultegra lever in toward the bicycle. The front derailleur will shift the chain to larger front gear.
  • 2 Push the inside left Shimano Ultegra lever in toward the bicycle. The front derailleur will shift the chain to a smaller front gear.
  • 3 Use the front and rear Ultregra hand controls interchangeably. For small changes in gearing, using the rear control. For larger changes, choose the front control. A smaller gear causes the bicycle to travel a shorter distance per pedal stroke but also requires less energy to use. A larger gear requires greater effort but in turn causes the bicycle to travel farther per pedal stroke.

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Iv cleaned the brakes and cilinderon my honda civic coupe v reg but the brake is not releasing itself

If ft.brakes are sticking it should be calipers are bad 7 times out of 10...or some may have a ft.
metering valve.....but should be ft calipers sticking...sometimes the hose will go bad but normally it is calipers.....if it is the rear sticking the emergency might be slightly engaged or the rear brake
proportioning valve is bad......jack car up and see which wheels are freezing up by turning the wheel
round and round.see which one is hard to turn....if only one ft wheel is hard to turn change both calipers if hose's look good.if hose's are drycracked change them also because they will go bad internally....although it is normally the calipers.....calipers can be rebuilt has an o-ring around a piston that freezes....but sometimes the piston gets craters inside and you will waste time by trying to rebuild..

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2 Answers

I have a problem with de rear brake, if i runing and put de rear brake to stop they closed de pads and not runing again the tire not moving


It sounds to me like the Brake Calipers need to be rebuilt due to the sticking problem you have described. You can try bleeding your brakes, but I'm pretty sure it's the calipers.

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Jan 11, 2011 | 1999 Honda GL 1500 SE Gold Wing

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