Larry,

With your finger.
You flick it off in the summer.
You flick it on in the winter.
Take the cover off the front of your heater in front of your shift
lever.
Look at the heater hose.
Imagine a brass ball valve spliced in that horizontal hose.
I find this a much easier resolve to the cheap plastic inaccessible unit
under the Van.
It is an easy installation.
It is an easy task to accomplish to remove the unwanted heat in the cab
of the Van during the summer, and to reverse the procedure in the
winter.
I personally found the constant adjusting of the clip and slipping cable
to be a pain to deal with.
I found the kit on E-Bay some time ago, and the placement of the brass,
non leaking shut off valve to take me 10 minutes.
I am not crawling under the Van to deal with the poorly engineered stock
valve.
It's now at my fingertips.
The gentleman I purchased this conversion kit from is a bit gregarious,
and wild, but has many easy solutions to various Vanagon problems.
P-Mail me and I'll send you his E-Mail address.

RC

E-mail message

Subject: Re: Replaced that heater valve today!
How do you control it?
Do you have any pictures?
Larry A.

Robert Cardo wrote:
Jim,
Why not take another simpler route to no heat in the front compartment?
I added a brass ball valve behind the heater cover. I changed the
plastic heater valve, and forever was adjusting the cable clip which
seems to be the culprit more times than one can count of the leaking
valve problem.
I added the brass absolute, positive shut off valve and no heat at my
feet, ever.
It's much simpler to add this add on valve than to change, adjust,
crawl, and groap for the poorly designed Vanagon heater valve. I found
this to be an excellent option.
RC