Re:Serious Steering Wheel Vibrations- whoever

["Mark Manley" <WarpOMatic@xxxxxxx>]

    I would reinstall the worn pads and if the problem goes away, suspect the 
dealer sold you the wrong or faulty pads.
               Mark Manley


On Mon, 02 Jun 2003 23:53:20 +0000, alfa-digest wrote:

>Date: Mon, 02 Jun 2003 18:21:13 -0500
>From: "Jason Hagen" <hagen_jason1@domain.elided>
>Subject: Serious Steering Wheel Vibrations- whoever can solve this gets $20
>
>OK, since we are on the topic of steering wheel vibration and pulsing, 
>perhaps someone can help me troubleshoot a related issue that I have had no 
>success in solving.  15 years of mechanical experience (me) as well as a 
>dealer have looked at this and no solution to date.  I have held back on 
>asking via the digest because it is on one of my non-Alfa vehicles, but for 
>the hardcore mechanical guys out there, perhaps you will respond for me 
>anyway (I would appreciate it).  I suppose you could sub in the Alfa 164Q 
>for this scenario to make it more interesting!
>
>Here's the deal.  1988 BMW 735 with ABS.
>- -  Brakes worked great, no vibration at any speed off or on braking.  All 
>pads were getting worn and needed replacement.
>- -  Replaced front and rear pads and bled through all new fluid (cheap skate 
>method of a brake job)
>- -  The car then immediately exhibited significant wheel jerking at around 40 
>to 45 MPH on light to moderate braking. Only at this speed.  Can occur 
>braking from high speed coming down through the 45mph mark, etc.
>- -  Replaced front and rear rotors and front calipers to try to resolve.  
>Problem did not go away.
>- -  Re-bled system with manual bleeder.  Problem still there!
>- -  I have had the tires balanced twice and have tried two sets of rims 
>vibrations with both sets.
>- -  Then took apart all four calipers and cleans and lubed mounting/slide 
>pins, etc.  Problem still there.
>- -  BMW shop checked for worn bushings and components- none!
>- -  Alignment was done very recently, but before initial brake job.
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