[urq] Locking brakes

[Doug Rath]

I take it thats the master ,chris.
----- Original Message ----- 
From: <kleinbiker1 at aol.com>
To: <urq at audifans.com>
Sent: Tuesday, March 05, 2013 10:53 AM
Subject: Re: [urq] Locking brakes


>
>
> Napa part number:  NMC P2593
>
> $41.99 for a rebuilt one.
>
> I have this exact item in my UrQ.  It solved the problem immediately and 
> has been working fine for several years so far.
>
> Chris
>
>
> -----Original Message-----
> From: Doug Rath <drath1 at optushome.com.au>
> To: Thomas Pollock <tompollock2002 at yahoo.com>; John Koenig 
> <koenigj at comcast.net>; Patrick Carlier <p.carlier at pandora.be>; fdekat 
> <fdekat at sentex.net>; urq <urq at audifans.com>
> Sent: Mon, Mar 4, 2013 7:06 pm
> Subject: Re: [urq] Locking brakes
>
>
> Thank you all,
> We have checked the lines. When the brakes lock it is all wheels and 
> opening
> a bleeder is what I do to release them.
> Doug.
> ----- Original Message ----- 
> From: "Thomas Pollock" <tompollock2002 at yahoo.com>
> To: "John Koenig" <koenigj at comcast.net>; "Patrick Carlier"
> <p.carlier at pandora.be>; "fdekat" <fdekat at sentex.net>; <urq at audifans.com>
> Sent: Tuesday, March 05, 2013 7:48 AM
> Subject: Re: [urq] Locking brakes
>
>
>> glad you did mention it cause I've had that happen to me and chased my
>> tail trying to track it down, replaced a bunch of parts and had it end up
>> being the rubber lines (not the urq but other Audis).
>>
>> worth mentioning (my .02c)
>>
>> tom.
>>
>>
>> ________________________________
>> From: John Koenig <koenigj at comcast.net>
>> To: Patrick Carlier <p.carlier at pandora.be>; fdekat <fdekat at sentex.net>;
>> urq at audifans.com
>> Sent: Monday, March 4, 2013 2:52 PM
>> Subject: Re: [urq] Locking brakes
>>
>>
>> I'm not any help on the assumed master cylinder issue(s), but...
>>
>> No one has mentioned this, so I'll just throw it out... I have had
>> experience with brake hoses that will collapse internally when removing
>> hydraulic pressure (releasing the brakes), interfering with the release 
>> of
>> pressure from the piston(s) and causing the brakes to 'stick.' I
>> understand
>> that heat appears to be an issue with the problem being discussed, and
>> what
>> I'm suggesting is probably unrelated, but I just thought I'd offer it up
>> in
>> the spirit of food for thought...
>>
>> ~John
>>
>>
>>
>> -----Original Message-----
>> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com]On
>> Behalf Of Patrick Carlier
>> Sent: Monday, March 04, 2013 12:52 PM
>> To: fdekat; urq at audifans.com
>> Subject: Re: [urq] Locking brakes
>>
>>
>> Yes a known problem , but
>> what's causing it ?
>>
>> There's no sign of wear or damage or anything out of the ordinary
>> to a "faulty" master cilinder .
>>
>> Pat
>>
>>
>>
>> ----- Original Message -----
>> From: "fdekat" <fdekat at sentex.net>
>> To: <urq at audifans.com>
>> Sent: Monday, March 04, 2013 10:57 AM
>> Subject: [urq] Locking brakes
>>
>>
>>>> Message: 1
>>>> Date: Sat, 2 Mar 2013 07:26:37 +1000
>>>> From: "Doug Rath" <drath1 at optushome.com.au>
>>>> To: <urq at audifans.com>
>>>> Subject: [urq] Locking brakes
>>>> Message-ID: <C018DE0524874F9181A18242F35F706D at DougPC>
>>>> Content-Type: text/plain; charset="iso-8859-1"
>>>>
>>>> Hi guys,
>>>> I have had a persistant problem with the brakes on my WR not releasing
>>>> after a number of aplications.
>>>> Master ok
>>>> Brake hoses ok
>>>> My mechanic tells me that there is a wear spot on the piston from the
>>>> booster which is causing the problem.
>>>> We are making a spacer to fit between the master and the booster so as
>>>> the
>>>> piston will operate on a diferent area of the piston.
>>>> Has anyone experienced this problem.
>>>> Cheers.
>>>
>>> Many have had problems with brakes not releasing/applying themselves
>>> *when
>>> master cylinder gets hot*.
>>>
>>> Usually happens in 'stop and go' driving, as underhood temps go way up.
>>> If you think that may be a possibilty, a very quick test is to spray 
>>> down
>>> the
>>> master cylinder with a small had sprayer to cool it down.
>>>
>>> Is sort of a 'known problem' in the 5000/200/urq world.
>>>
>>> (Repair solution is replacemnt of master cylinder.)
>>>
>>> =Frank=
>>>
>>>
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>>
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>
>
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