Date:         Mon, 13 Mar 2017 20:41:42 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Front heater motor
Comments: To: Dan N <dn92610@gmail.com>
In-Reply-To:  <CAFdLW6mQr2Wo=GZPSkZmXC3CYm2XCaYf7nRarD94+rja-KGVzw@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

No, you can see them on Bentley 80.14 labeled forced air flap.  The snap in
and hang inside the heater box at the location directly beneath where the
figure points to "Flap housing, lower part" and when they close they shut
off the large rectangular opening that is immediately below that.  These
openings (one on each side of where the blower sits) allow ram air to pass
from the air inlet in the upper flap housing into and through the heater
core without having to pass through the blower when it is not running.

When the blower runs fast enough to be stronger than the ram air, it blows
air backwards through those big openings back into its own input.  What is
supposed to happen at that point is the hanging flaps are blown shut
against the far side of that rectangular opening.  This forces the blower
air to pass through the heater core instead of recirculating to its own
input.

Yrs,
d

On Mon, Mar 13, 2017 at 12:59 PM, Dan N <dn92610@gmail.com> wrote:

> hi David,
>
> are you referring to this hinges?
>
> http://images.thesamba.com/vw/gallery/pix/1007419.jpg
>
> dan
>