General Discussion Triathlon Talk » Rear Brakes Close but Don't Open (Video) Rss Feed  
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2013-08-11 3:49 PM

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Delco, PA
Subject: Rear Brakes Close but Don't Open (Video)

On my 2011 Fuji Newest 2.0, the rear brakes have been shifting over for the past few months and rubbing.  Whenever it happens I just shift it with my hand and try to tighten the allen key bolt behind the fork when it's back in place.  Recently, however, it's been happening a lot.  Now they also close but don't open back to the normal width again.

I've tried everything from adjusting the bolt behind the fork, using a wrench to get the one behind the brake, and adjusting the cable.  I don't know what to do and need it fixed quickly because of a race on Saturday.

Here's a video so you can see:

http://tinypic.com/player.php?v=2ueivsg&s=5

Shows the brakes separated by hand, then using the brake, then showing it close to rim and not shifting back until by hand.



2013-08-11 4:42 PM
in reply to: C_Hassard

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Subject: RE: Rear Brakes Close but Don't Open (Video)
Could be 1 of two things.... Most likely you need to clean and oil your cable. It is strange that it does not open back up at all so it could be your spring needs to be replaced. I would start off with cleaning and oiling your cable though.
2013-08-11 4:50 PM
in reply to: clrv

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Subject: RE: Rear Brakes Close but Don't Open (Video)
Originally posted by clrvCould be 1 of two things.... Most likely you need to clean and oil your cable. It is strange that it does not open back up at all so it could be your spring needs to be replaced. I would start off with cleaning and oiling your cable though.
Also tried that. Still to no avail.
2013-08-11 5:20 PM
in reply to: #4826314

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Master
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Subject: RE: Rear Brakes Close but Don't Open (Video)
What state is the cable casing in? Is there any chance that grit and dirt could have worked it's way up and is now preventing the cable from moving correctly?

I have had this problem before with a rear brake and ended up replacing it in the end as I was unable to find a solution.
2013-08-11 5:26 PM
in reply to: tridantri

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Subject: RE: Rear Brakes Close but Don't Open (Video)
Originally posted by tridantriWhat state is the cable casing in? Is there any chance that grit and dirt could have worked it's way up and is now preventing the cable from moving correctly?I have had this problem before with a rear brake and ended up replacing it in the end as I was unable to find a solution.
About a month ago I wiped down the cable and wiped it with a rag, in case this was the problem.
2013-08-11 9:34 PM
in reply to: C_Hassard

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Subject: RE: Rear Brakes Close but Don't Open (Video)
The video eliminated one of my questions, but does not eliminate any possible root causes. Lossen the bolt holding the cable to the calipers. pinch the calipers closed by hand. If they stick, then the problem is in the caliper. Also pull the cable by hand at the caliper end. With the other hand, grip the brake lever on the handlebar. If you feel the cable catch, then the cable could need replacing, or the cable housing could need a thorough cleaning with a few blasts of WD-40. Even a brand new cable could be a problem if any strands unraveled in the cable housing.


2013-08-12 5:37 PM
in reply to: Six000MileYear

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Subject: RE: Rear Brakes Close but Don't Open (Video)

Brought it into the LBS today and it was a combination of both the cable housing needing a cleaning and a faulty spring.  They took care of both.

Thanks for the help everyone. Much appreciated.

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General Discussion Triathlon Talk » Rear Brakes Close but Don't Open (Video) Rss Feed  
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