[urq] Brake Judder
Pasqualoni, James E
james.pasqualoni at gs.com
Thu May 18 12:47:50 EDT 2006
I would say that my experience shows these 2 things to be the main
1. Worn front control arm bushes
2. Rust and/or debris between the disc and hub that create a 'wobbling'
effect of the rotor. You can clean up the mating surfaces of the hub
and disc, then index the disc using a magnetic caliper (attached to the
strut) to ensure uniform alignment of the disc.
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
Behalf Of CARDCONSYS at aol.com
Sent: Thursday, May 18, 2006 12:22 PM
To: urq at audifans.com
Subject: [urq] Brake Judder
Not strictly confined to Audi but I know the readers of this list have
so much more experience than the usual repair techs!
There have been many articles written about juddering under
braking, not the least by Stop Tech who essentially say warped discs
are not the problem.
I put new discs, pads, and tyres on my Subaru within the last month and
bedded them in in the usual manner. Brake as hard you like from 55mph
and all is smooth. At running speeds in the 60-80mph range there is a
slight vibration through the steering normally associated with wheel
balancing. Brake from the 60-80mph range and there is a sever judder
until the speed drops below 55 or so.
Local technician, at very well respected servicing outfit who also
installed the tyres, drove the car and said to replace the discs.
Question? Anyone experienced another cause for the judder such
rod ends, steering knuckle, or simply alignment?
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