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Topic: Vacuum pipe/diaphragm (Read 547 times) |
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clivehenryjones
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Vacuum pipe/diaphragm
« on: Jul 6th, 2006, 8:25am » |
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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.
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martin_rowe
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Re: Vacuum pipe/diaphragm
« Reply #1 on: Jul 6th, 2006, 8:31am » |
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operates the recirc flap in the heater box.
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clivehenryjones
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Re: Vacuum pipe/diaphragm
« Reply #2 on: Jul 6th, 2006, 8:56am » |
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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 
Clive.
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clivehenryjones
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Re: Vacuum pipe/diaphragm
« Reply #3 on: Jul 6th, 2006, 9:02am » |
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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.
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Snoopy
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Re: Vacuum pipe/diaphragm
« Reply #4 on: Jul 6th, 2006, 9:10am » |
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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
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