Question regarding UFO brakes

Bernie Benz b.benz at
Tue Jul 10 18:58:55 EDT 2007


I disagree, and apparently likewise does Mike Miller, that there is a  
significant problem removing the UFO rotor from the hub and  
serviceable caliper.  Just tilting the caliper off the hub will force  
sufficient piston retraction and move the caliper outward enough such  
that the outer pad will clear the rotor’s inner ridge as one wiggles  
the rotor off th hub and upward. At 225K on my UFOs, I have nice  
annular ring ridges either side of the rotor’s active surface, which  
make for great passive wear sensors!


On Jul 10, 2007, at 8:09 AM, Ben Swann wrote:

> Bernie,
> Even with pads fully retracted, it can still be a problem to get  
> the disk off,
> especially if it has a groove.  I have seen the instructions -  
> don't recall
> where, but they indicate on installing a new pad, it is necessary  
> to cut a
> bevel out of the side and some pads come this way from the factory.
> Ben
> -----Original Message-----
> From: Bernie Benz [mailto:b.benz at]
> Sent: Monday, July 09, 2007 10:09 PM
> To: Ben Swann
> Subject: Re: Question regarding UFO brakes
> On Jul 9, 2007, at 5:04 PM, Ben Swann wrote:
>> Brute force and a bit of conniving with a hammer/crowbar - I have
>> seen some
>> instructions showing to cut the pad edge down at an angle to make
>> assembly
>> disassembly easier.  You'll simply have to remove some pad
>> material.  Also
>> making sure the calipers are fully retracted may help.
>> My recall is everytime I've done this job I run into this problem,
>> so you are
>> not alone.
> If that's your case, apparently you have never overhauled and
> maintained your brake's hydraulic system.
> Bernie
>> Ben

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