[urq] Stopping Power: 100%- 50%- 10%- AAAHHHH!

[Pasqualoni, James E]

I would still suggest replacing the brake fluid and master prior to dipping
into the hydraulic components, unless you are seeing ATF fluid leaking.  I
have a leaking servo, and brake-pedal feel is fine, even with the fluid down
about 50 mm.  May be that the master piston is not retracting fully,
accounting for some of the drop in ATF fluid level and increased pedal
travel/decreased effect.

HTH,
Jim

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of Maurits Jonkergouw
Sent: Thursday, April 14, 2005 8:52 AM
To: Audifans
Subject: Re: [urq] Stopping Power: 100%- 50%- 10%- AAAHHHH!


Thanks guys, see comments inserted below:

  ----- Original Message ----- 
  From: <Louis-Alain_Richard at computerhorizons.com>

  Did you checked the power-brake-steering ATF fluid level?
  Must empty the bomb first, then check the level in the reservoir bolted on
  the firewall. Must be at 10 mm bellow the top, once the bomb is emptied.

  But it does looks like a failing master cylinder, or pressure regulator
  (bellow the master cylinder).

  LaR

The hydraulic fluid is a tad low (~50 mm from top after I  pumped the pedal
~10 times until returns hard with the engine off). 

ETKA indicates there is a Repair kit for the Tandem Master Cylinder 23.81mm
(P/N 183 698 181 B) but how do I know for sure that's wrong with it and not
the Brake Pressure Regulator (P/N 803 612 303)? BTW the kit is 104,- euro ex
VAT so it's worth a try not?


  ----- Original Message ----- 
  From: "Ingo Rautenberg" <i.rautenberg at waratap.com>

  Sounds like Brake Master to me, but when did you last change the fluid?
  Regardless of what the problem is, first step is to change the fluid,
  preferably using a pressure bleeder.  Even with marginal bomb, you
shouldn't
  loose pedal feel like that with the car running.

  Ingo

The brake and ATF fluid is changed in late 2001 @ approx. 230.000 km 


  ----- Original Message ----- 
  From: "Brandon Rogers" <brogers at terrix.com>

  My guess is it's NOT the bomb.  bad bomb = hard pedal I'm pretty sure.

  Brandon


Well, it does get hard after 8-10 pumps with the engine off, with running
engine even longer.






_______________________________________________
Audifans urq mailing list
Send posts to: mailto:urq at audifans.com
Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
Have an urq question?  Check the Audifans Knowledgebase!
http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
Have an urq answer? ... Please help others by adding to the KB ... all
contributions welcome!