Re: Audi Brakes

[RC Ringlien <rringlie@isd.net>]

PATRICK_KELLY@HP-Andover-om3.om.hp.com wrote:
> 
> Item Subject: Text_1
>      Hi Bob,
> 
>      My name is Patrick Kelly and I've been following your post on the
>      Quattro list regarding your brake drag problem.  Yesterday my 87 5kQ
>      did pretty much the same thing on the drive to work.  I just finished
>      doing the timing belt, water pump job. The only work I did to the
>      hydraulics or brakes was to change the pump belt and top off the
>      hydraulic fluid.  About 30 minutes into my drive on a 75 degree
>      morning the brakes started to drag and the brake pedal was very hard.
>      I didn't try any hard stops and the indicator light never came on.  I
>      let the car cool down till lunch and drove it again and everything was
>      normal. Drove it home and back to work today and everything seemed
>      normal.  I talked with my parts guy who said its the bomb and it
>      should have been replaced anyway since I'm approaching 200k miles.
>      The Bentley manual has a whole pressure checking procedure for the
>      hydraulic system that I'm considering having done but I thought I'd
>      ask you how you made out with your '89 since the symptoms you
>      described are very similar to mine.  Any help is greatly appreciated.
> 
>      TIA,
> 
>      Pat Kelly
>      kpatrick@an.hp.com
Pat:
   First, I'd like to say that you will have no confidence to drive this
vehicle till the problem is resolved.  Mine still sits in my garage as
other things took my time the end of this week--guess what, working on
another Audi, my daughters 85 5kt.
   Next week I'm am going to replace the bomb as I suspect it's bad
anyway, regardless whether it fixes my dragging problem.  My servo
passes the static tests--have you tried that yet?  Disconnect the return
line from the servo(biooster) to the reservoir. Run the car but don't
touch the brake pedal.  Only a few drops should escape from this line. 
I
will keep you updated as I get my used BOMB to try next week.  I'm off
to the racetrack now--horses that is.
   Have a nice weekend.
RC Ringlien
(my riding mower broke down this week too!)