Nippondenso compressor AC clutch adjustment

[Kneale Brownson]

The "air gap" adjustment on the A/C clutch is accomplished by adding or
removing shims.  On the 200q20v, the gap is supposed to be .6 to 1 mm
(0.02-0.04 in.), according to the Bentley Section 87.

At 07:48 AM 6/12/2006 -0700, Richard J Lebens wrote:
>My AC wasn't working on my 1991 90 Quattro 20V.  After troubleshooting
>I determined there was voltage at the clutch but it wasn't pulling in. 
>
>
>I undid the connector to the clutch to measure the coil resistance and
>while the connector was apart I applied battery voltage directly to the
>clutch to measure the current.  To my surprise, after a minute it
>pulled in.  It has worked ever since.
>
>I doubt that the serendipity will last however.  I am thinking maybe
>the clutch gap needs adjustment.  I can't find anything in the Bentley
>about this.  Has anyone done this and/or can steer me to some info on
>how to do this?
>
>
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