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?


Try flushing out the shifter(s) with WD-40, use plenty. The next step will be replacing the shift cables and cable housings.
  • 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.

Oct 25, 2011 | Cycling

1 Answer

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 ....it 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..

Feb 19, 2011 | 2000 Honda Civic

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


Hello,

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.

If you find this information helpful, please vote on this post. Thank You.

Regards,

Oz

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

1 Answer

Hi Everyone! I have a Shimano 5603 Hollowtech 2 triple chainring.......(10 Speed) I want to add a Utlegra 6600 front derailleur and Ultegra 6600 rear derailleur. Also 10 speed cassette, Ultegra...


No -

If you are going to use the front triple crankset, then you need to use the 6603 components. These are for Triple set-ups.

If you intend to keep your bike a triple, then everything in the drivetrain must be the triple designation, hence the XX03.

If you want to change the crankset to a compact, then you can use the 6600 (double) equipment, but you will need to change the left (front shifter) to a double as well. The compact crankset, will give you virtually the same range as the triple and be much lighter and shift better.

The cassette: You can use any 10 spd cassette from Shimano or SRAM as long as the rear cog is no larger than 27. if you want to use a larger cog like a 28, then you will have to use the 6700 group, assuming yoiu want to stay with shimano ultegra.

Final Note: Since you are chainging everything, you may want to consider the SRAM Apex group, this gives you more gear ratio than the Ultegra, is slightly less expensive and around the same weight. Great alternative to Triple bikes.

Parts you will need to convert:
Rear Derailleur
Front Derailleur (if changing to compact double or Apex)
Chain
Shifter set (if Apex)
Crankset (if Apex or compact shimano)
Bottom Bracket (if Apex)

The biggest thing is that Shifters and rear derailleur must be from the same company (shimano, SRAM, etc.) after that just make sure that yoiu use 10spd with 10spd, 9 with 9, and so on. Everything else can mix and match.

Dec 18, 2010 | Shimano Ultegra Triple Front Derailleur Fd...

1 Answer

New Pads new brake line cleaned and rebuilt caliper


It is one of two possible things:
There's corrosion in the caliper. Specifically in the groove that holds the piston seal. Take the seal out and scrape all signs of corrosion from the groove.
OR, the master cylinder has a gummed up check valve. Sometimes, you can take the master cylinder off, clean it out with hot soapy water (Simple Green works very well), blow it out with compressed air - and it'll be fine (without taking it apart). Otherwise, you'll need to get the rebuild kit and replace all of its internal moving parts.

Nov 17, 2009 | 1982 Honda GL 1100 Aspencade Gold Wing

1 Answer

Hello, maybe you have shimano ultegra right brake level manual, or schemes?


Here is a link to Shimano's Tech Docs page for Ultegra components, you can find exploded diagrams and manual information for your specific components.

Hope this helps,
matt

Oct 06, 2009 | Shimano 2008 Dura-Ace BR7800 Rear Road...

3 Answers

Brake pad is sticking.


Work the caliper piston in and out until it moves freely, otherwise buy a new caliper

Jul 22, 2009 | 2002 Honda CR-V

1 Answer

Shimano Dura Ace Brake lever chatter


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.

Mar 26, 2009 | Shimano 2008 Dura-Ace BR7800 Rear Road...

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