The cable play can be adjusted at either end. The valve end has a pita
clip you can remove and then slide the cable sheath to give more or less
play as needed. The clip can be a bear to get back on without deforming
it. At the dash lever end you can loosen a clamp bolt and slide the
sheath either way to give more or less play. The bolt can be reached
through the I.C. hole but it may help if the ashtray and radio are removed.

It is common for the wire part of the cable to get a bend in it at the
dash lever end. This keeps the cable from moving as far as it should.
Check this first and try straightening it. A new cable does not cost
much either.

Mark

Greenamyer, William L wrote:

>For all those with an interest, it does appear that the wire control to
>the heater valve really doesn't have a good end on it and thus, the
>valve really doesn't close all the way.  This was causing the core to
>get worm enough to throw heat into the van.  When I am driving on the
>highway in California and the temperature is 100 outside, I didn't need
>any more heat.  Had to drop the tire and move the valve to the closed
>position to actually get it to shut off (the dash lever didn't go far
>enough).  No heat experienced this morning.  Is there any other type of
>arrangement for attachment of the heater cable to the valve that doesn't
>allow for the play experienced?  I would hate to bend the wire around
>and have the end break off but if there is some type of clip that could
>be installed, that would solve the problem.  Anyone have any ideas?
>
>William
>
>
>