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>From: "Woolston Craig" <cwoolsto@ladc.lockheed.com>
>I believe I have a leaky AT kickdown solenoid on my '71 Fastback. There
are no leaks of the AT but the level is going down
>every couple of days and yesterday I noticed that the pressure sensor had a
drop of AT fluid forming on the bottom of it. So I
>disconnected the vacuum line to the solenoid and AT fluid drained out of
it. I understand that when replacing these you need to
>adjust the new one with a allen wrench in the middle of the vacuum barb
connector.
>
>My question is does anyone know have the equipment to messure the various
AT ports to do this? And where/what did you
>buy/build the components from?
If the part you are referring to points out the BACK of the AT then this is
the Vacuum Modulator, not the kickdown solenoid. You need the Bentley
manual and a 50 psi gauge with 1/8" male npt threads to set it properly.
This is not a perfect thread match, but I use one that has the nipple out
the back along with a brass 1.5" male-female extension. This seals well
enough to do the job and doesn't distort the threads enough to hurt
anything. Once you do the job by the book, you can twiddle the pressure up
or down without the gauge if you want to move the shift points up or down.
CW will moves the shift speed up, CCW moves them down.
Make sure you get the right replacement modulator. It would have the VW
number on it with an "A" suffix. Don't settle for the wrong part.
The vacuum modulator has a diaphram in it that can spring a leak and allow
the intake vacuum to pull AT fluid into the intake. This is a good thing to
fix.
The kickdown solenoid is inside the AT, and is just connected to the
kickdown switch by a wire.
Jim
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Melissa Kepner Jim Adney
jadney@vwtype3.org jadney@vwtype3.org
Laura Kepner-Adney
Madison, Wisconsin
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