Thanks David.

Yes this is what I'd come to understand via the web page I originally
pointed to.

I had made a short video of the AFM behaviour at idle. In hindsight,
would have been interesting to watch AFM wiper when turning CO screw.

An image of resistive strip on my AFM. Arrow points to roughly where
vane would sit at idle:

https://lh6.googleusercontent.com/-c5axVMck2Ks/T-tDy8qL_MI/AAAAAAAAF2o/Cly2OSeHmUk/s912/AFM%2520Board%2520Wear.jpg

Wear didn't appear that bad but I moved the wiper to a new portion of
the strip to be sure.

FWIW for others, since I had repositioned the wiper to new material.....

Using a digital VOM,  AFM connected, engine off, ign. on, measuring at
2 and 4 of AFM connector I saw:

4.5 volts AFM vane fully opened
0.25 volts AFM closed

Neil.

On Sun, Jul 8, 2012 at 12:54 AM, David Beierl <dbeierl@attglobal.net> wrote:

> At 04:51 PM 7/6/2012, neil n wrote:

>> would allow the AFM to stay closed. .....    Not true it seems.

> No, it's a trimmer.  See
> https://picasaweb.google.com/dbeierl/VanagonWBXAFM?authuser=0&feat=directlink
> for the rough area that the vane oscillates about during idle.  If the
> lighting in the photo had been different you'd have seen the additional wear
> spot on the carbon track.

--
Neil n

65 kb image Myford Ready For Assembly  http://tinyurl.com/64sx4rp

'88 Slate Blue Westy to be named.

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