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

Wed Apr 22 15:05:11 PDT 2009

That should do it.

-Ian Duff, sent from my iPhone.

On Apr 22, 2009, at 17:48, "Jim Fleischer" <jim at almgt.com> wrote:

> The second time I bled, some very small bubbles were released, the  
> third time was nothing but fluid out of all four corners.
>
> Jim
>
>
> ----- Original Message ----- From: "Ian Duff" <iduff at comcast.net>
> To: "Jim Fleischer" <jim at almgt.com>
> Cc: "Scarlist" <s-car-list at audifans.com>
> Sent: Wednesday, April 22, 2009 1:36 PM
> Subject: Re: [s-cars] Front Brake calipers not releasing.....Master  
> Cylinder?
>
>
>> <conjecture>
>> Plenty of pedal pressure could still exist with some air trapped  
>> in  the lines, you'd just have to push the pedal a bit further to  
>> compress  the air. If this is the case, you'd have a built-in  
>> spring keeping the  pads against the rotors, as you describe.
>> </conjecture>
>>
>> A better read would be the fluid coming out of the bleeder screws   
>> during bleeding. Was it COMPLETELY free of bubbles before you   
>> tightened down the bleeder screw?
>>
>> -Ian Duff.
>>
>> On 22 Apr, 2009, at 12:41, Jim Fleischer wrote:
>>
>>> Question.....if I've got plenty of pedal pressure from the  
>>> bleeding methods tried thus far, is the Motive pressure bleeder  
>>> really  necessary? Once again, the pistons are pressing well, just  
>>> not  retracting, seems to be on all four corners.....
>>>
>>> Just curious before I spend another $54.95.....and wait for  
>>> another  few days for delivery....
>>>
>>> Jim
>>>
>>>
>>> ----- Original Message ----- From: "Ian Duff" <iduff at comcast.net>
>>> To: "Jim Fleischer" <jim at almgt.com>
>>> Cc: "Scarlist" <s-car-list at audifans.com>
>>> Sent: Wednesday, April 22, 2009 10:30 AM
>>> Subject: Re: [s-cars] Front Brake calipers not  
>>> releasing.....Master Cylinder?
>>>
>>>
>>>> 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
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> S-CAR-List mailing list
>>>>> S-CAR-List at audifans.com
>>>>> http://audifans.com/mailman/listinfo/s-car-list
>>>>
>>>>
>>>
>>
>>
>