[s-cars] Front Brake calipers not releasing.....Master Cylinder?

[Ian Duff]

Don't pass go, don't collect $200, do't try to bleed VAG brakes  
without a Motive bleeder http://www.motiveproducts.com/. The tried-but- 
true pump-hold-bleed doesn't work so well on these cars.
-Ian Duff.

On 22 Apr, 2009, at 12:25, Jim Fleischer wrote:

> Hi Tom,
>
> I've got a buddy who concocted a pressure bleeder for his  
> Volvos......used
> it the first time I bled them, and seemed to work okay.  It was a  
> little
> frustrating to mess with, so I flushed the system the old-fashioned  
> way the
> second and third times and seemed to get a stronger bleed.  Pedal  
> feel is
> like it was before the ruptured rear line put this ball into motion.
>
> This is my first brake job on the "S" without adult supervision, but  
> I have
> done them in the past on some Fords of years past......I've  
> spectated on a
> couple of Audi brake jobs before.  I'm running VW/Audi DOT 4 fluid  
> through
> the system, as that is what was in there before.  I've gone with all  
> oem
> lines, rotors and pads for the reason that if I screwed something  
> up, it
> would be pretty obvious to me, or so I thought.
>
> When looking at the old pads, it looks like this may have been a  
> problem for
> some time, as there is some uneven wear in the pads on the right  
> rear, and
> front left.  There also had been some "hot spots" on the rotors  
> (that's what
> the machinist said.)  Maybe the MC had been acting up for awhile,  
> and until
> I replaced everything, it was somewhat unnoticeable.
>
> Brake light does come on for between 20-30 seconds before it shuts  
> off, and
> has done that for about a year.  That has not changed throughout this
> process.
>
> Thanks for the help everyone!
>
> Best regards,
>
> Jim Fleischer
>
>
> ----- Original Message -----
> From: "Tom Green" <trgreen at comcast.net>
> To: "Scarlist" <s-car-list at audifans.com>; "Jim Fleischer" <jim at almgt.com 
> >
> Sent: Wednesday, April 22, 2009 6:15 AM
> Subject: Re: [s-cars] Front Brake calipers not releasing.....Master
> Cylinder?
>
>
>>>
>> All symptoms point to the master cylinder, Jim.
>>
>> You did not mention how you were bleeding the brakes.  Do you have a
>> power bleeder now?  If so, what kind?
>>
>> I believe you are experienced at brake work, and fully understand  
>> this
>> question,but have you verified that the correct fluid is in each  
>> system?
>>
>> Tom
>>
>>> -----Original Message-----
>>> Date: Tue, 21 Apr 2009 19:45:27 -0600
>>> From: "Jim Fleischer" <jim at almgt.com>
>>> Subject: Re: [s-cars] Front Brake calipers not releasing.....Master
>>> Cylinder?
>>> To: "Lee Levitt" <lee at wheelman.com>
>>> Cc: s-car-list at audifans.com
>>> Message-ID: <DFA9E02A978D4817AE02080AE70742A0 at 421Capitol>
>>> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>>> reply-type=response
>>>
>>> The part #'s matched up front and rear, and the shape of the pads  
>>> were
>>> identical to what I took off.......they fit fine until the first   
>>> brake
>>> pedal
>>> test.....then they just stay there.  I took the car out again after
>>> bleeding
>>> the whole system, twice......after a very short drive, I checked  
>>> all  the
>>> corners and it looks like I've got issues at all four calipers,  
>>> as  all
>>> the
>>> rotors were hot......the fronts are just making more noise than the
>>> rears.....hopefully the master cylinder will do the trick.
>>>
>>> thanks for the tip, though....
>>>
>>> Jim
>>
>>
>>
>
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