T-Stat Adjustment (Wont Close Flaps)

[AircooledHome]

Ding ding, seems we have found the issue.

Minor adjustments to the c shaped thing and very minor bend of T-stat housing bracket and the flaps close almost full, about 3/16 from closed.

Before:

After:

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'71 Deluxe Bus - http://www.thesamba.com/vw/forum/viewtopic.php?t=659421&highlight=

[Clatter]

I see this all of the time.
Don't think I have ever seen one NOT bent like yours is..

You say you don't want to bend it, but too late.
Someone already bent it.
You need to bend it back.

Here is why none of these engines have these anymore:
The first guy to take the engine out/apart is a teenager, or a hippy, or stupid, or all three.
He has never done this before.
He is tired, and in a hurry, and he is cold and hungry and it's getting dark out..
The screws are all out, and the fan shroud is supposed to come off,
And it says in the idiot book it's supposed to lift straight up and off.
So the guy yanks and yanks and yanks, cussing, before he looks and sees what is up.
Only then does the (now bent) t-stat rod get taken off..

THIS is why none of these cars have a thermostat any longer.
It's not that anyone ever figured out that it wasn't needed,
It's just that it's too complicated of an object for half-drunk stupid, hungry tired teenage hippies..

If you look at your t-stat/flaps assembly carefully,
You will be able to determine how your linkage has been bent,
And how to return it back to shape to operate correctly.

Think of our teenager hank-yank-ing, and reverse his damage..

Every single one of them I have ever seen was bent like that.
Very, very few of these cars were ever only dis-assembled at the dealer.
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Bus Motor Build

I have excellent news for the world...
There is no such thing as patina.
It does not exist!

[scubaseas]

Some shots in link below. I agree with busdaddy on the "c" being bent. Or the crank rod to the flap is bent. Imagine someone pulling up on the fan housing with the t-stat rod attached, you would have to apply a 180* opposite force to the "C" or maybe just source a new right side flap/shutter assembly? You need some air to flow past it even when it's closed or the thermostat would never open. You will have plenty of heat through the heater boxes regardless if the flap position.



https://www.thesamba.com/vw/forum/viewtopic.php?t=...mp;start=0
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Al

08/1970 T2a Westphalia owned since 1980

ASE Master certification. 50 years pushing a wrench
Retired

[AircooledHome]

[busdaddy]

That C shaped thing is bent, a slight adjustment down in you pic will change the mechanical advantage of it dramatically (close up the C), WT's photo doesn't show it from the side but it has to be a few MM further off center of the pivot for the flap and closer to the flap. Too many yanks last time the shroud wouldn't come off.
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[AircooledHome]

[scubaseas]

Please note the flaps do not normally travel as far as you are making them go into the closed position. You normally have a rod and thermostat attached which will limit the amount of travel. It's more important the open position is obtained rather than the closed.
_________________
Al

08/1970 T2a Westphalia owned since 1980

ASE Master certification. 50 years pushing a wrench
Retired

[AircooledHome]

[Wildthings]

Is this how your rod is fitted?

[scubaseas]

[scubaseas]

Decent picture in the article below

http://www.vw-resource.com/vanes_thermostat.html

Note how your outer flap is not vertical, straight up in full open position where the inner is. It looks bent on the shaft possibly when it got pulled off at some point in the past?
_________________
Al

08/1970 T2a Westphalia owned since 1980

ASE Master certification. 50 years pushing a wrench
Retired

[AircooledHome]

There is no rub. The flaps are not hitting the head.
_________________
'71 Deluxe Bus - http://www.thesamba.com/vw/forum/viewtopic.php?t=659421&highlight=

[scubaseas]

[scubaseas]

I can't explain what is wrong. Try this. Take the tin off the right cylinders. Then mount the fan housing on the stand. You'll then see where you are hitting the head with the flap.
_________________
Al

08/1970 T2a Westphalia owned since 1980

ASE Master certification. 50 years pushing a wrench
Retired

[Wildthings]

I am going to guess that somehow the rod is attaching to the flaps wrong or that the rod is not bent correctly. Maybe someone has some pretty good pictures of what the parts should look like and exactly how they are supposed to fit together.

[AircooledHome]

Full close:

Full open:

_________________
'71 Deluxe Bus - http://www.thesamba.com/vw/forum/viewtopic.php?t=659421&highlight=

[AircooledHome]

[scubaseas]

Might want to check these out too.

http://www.awesomepowdercoat.com/cylinder_air_vanes.html

If your flaps are straight they should work full close to full open but start with the proper sequence of assembly. After the fan, generator and shroud are on the generator stand it may work fine. If not a picture of the right side flap assembly would be telling.
_________________
Al

08/1970 T2a Westphalia owned since 1980

ASE Master certification. 50 years pushing a wrench
Retired

[AircooledHome]

[busdaddy]

X3 on the above, also a pic of the RH flap assy might help, many are tweaked from attempting to lift the shroud before removing the thermostat.
_________________
Rust NEVER sleeps and stock never goes out of style.

Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!

Слава Україні!