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        General >> Problems >> Vacuum pipe/diaphragm
        
(Message started by: clivehenryjones on Jul 6^th, 2006, 8:25am)

Title: Vacuum pipe/diaphragm
Post by clivehenryjones on Jul 6^th, 2006, 8:25am

Hello again,
My N reg Executive (base) spec Scorpio - no air con - has a bellows/diaphragm unit to the side of the pollen filter box under the scuttle. It has a lever that goes back to the PFB and a vac (?) pipe to the front.
I had noticed that this pipe had come adrift yesterday, and replaced it.
My question is - What is this mechanism and what does it do?

Sorry if I sound like a complete numbnut, but I do work in the motor industry and have been self servicing my cars for the last 35 odd years, I just haven't come across a car as complicated as my Scorpio before.
Thanks,
Clive.

Title: Re: Vacuum pipe/diaphragm
Post by martin_rowe on Jul 6^th, 2006, 8:31am

operates the recirc flap in the heater box.

Title: Re: Vacuum pipe/diaphragm
Post by clivehenryjones on Jul 6^th, 2006, 8:56am

Hi Martin, thanks for that.
What effect would I get if (as was the case) the vac pipe was disconnected? - I can't seem to recollect that the heater has been playing up at all :o

Clive.

Title: Re: Vacuum pipe/diaphragm
Post by clivehenryjones on Jul 6^th, 2006, 9:02am

Ah, just thought about it a bit more.
The "fan" dial on my car can be turned clockwise or anti clockwise from 12 o'clock.
One way (the diagram on dash says) I will "pull" air from outside, the other from inside (the recirc that you referred to?).
I guess that, in that case, there would be little difference felt, and the heater/blower unit would appear to work normally.
What is the point of being able to appoint which source your air comes from anyway? ???

Clive.

Title: Re: Vacuum pipe/diaphragm
Post by Snoopy on Jul 6^th, 2006, 9:10am

To stop unwanted "smells " entering the car or even to cool it down quicker using the A/C.

or even heat it up in the winter. see this page in the handbook PAGE (http://www.fordscorpio.co.uk/images/handbook050.gif)

Title: Re: Vacuum pipe/diaphragm
Post by clivehenryjones on Jul 6^th, 2006, 10:20am

Thank you all for your replies.
I'm a bit wiser now....

and definitely older!
Clive