[T3] cooling flap troubles

[Jim Adney]

On 28 May 2017 at 12:21, Earl Schamehorn wrote:

> I'm having a difficult time getting my cooling flap thermostat to have
> enough travel to open, or close, the cooling flaps all the way.

It's fairly common for old thermostats to lack enough range to both fully open 
and fully close the flaps. I think early manuals gave a measurement for what 
the cold dimension of the thermostat should be, so that if the thermostat 
would not "shrink" enough it would be replaced. I'm not sure what that 
number was, but even NOS thermostats, sitting on a shelf can have that 
problem, because it occurs when air has slowly leaked inside because the 
solder sealing of the thermostat was not perfect.

I think you can check for this by seeing if you can squeeze the thermostat 
down farther by hand. There's an internal stop in there that sets the minimum 
length and the thermostat is supposed to rest against that stop when cold.

These days, when I encounter this, I figure that it's more important that the 
flap reach the fully open state, especially since I no longer drive my Type 3s 
in subzero weather.  

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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