87 5000TQA Anti-Lock Brake Problem

[S P SHERMAN]

Thanks to all.

In an attempt to save a trip to the dealer (a long one for me) does anyone 
know the approximate thickness of these plastic spacers?

It seems to me that one should be able to push the sensor in all the way, 
mark it, then pull it back this spacer thickness/distance and get fairly 
close. Or does this not work in practice?


>From: Kneale Brownson <knealeski at sbcglobal.net>
>To: Bernard Littau <bernard.littau at gmail.com>, a.sigal at bluewin.ch
>CC: quattro at audifans.com
>Subject: Re: 87 5000TQA Anti-Lock Brake Problem
>Date: Thu, 11 Oct 2007 10:22:08 -0700 (PDT)
>
>Part Number for the ablative caps used to properly space the sensors is 
>437927809.  World Impex lists four for $10 or so.  I think I bought 'em for 
>about 50-60 cents apiece years ago when I had an 87 5ktq through a 
>dealership.
>
>Bernard Littau <bernard.littau at gmail.com> wrote:  No, don't just tap them 
>in until they meet the cogs, that's too close and
>will likely damage the sensor the first time a spec of dirt gets in there.
>
>The little plastic cap sits atop the sensor, and you push the sensor +
>plastic all the way in until it bumps the teeth. The plastic has a
>sacrificial piece that gets sheared off in use . This allows the sensor to
>be placed at the correct distance and still have an air gap.
>
>The key is correct distance between sensor and teeth. You can guesstimate
>it and nudge the sensor in and out for effect, but that is a lot of work
>since you need to drive a bit between adjustments if it's not right. The
>plastic caps are the sure-fire factory-approved one-shot adjustment.
>
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