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  #1  
Old 06-09-2018, 01:39 PM
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Thermo vacuum valve w201

From what i read its importan that you attach correct tube in/out, but why? Bimetal operated valve, open or closed. Just from curiosity what happens when you switch the lines?


Last edited by mb201; 06-09-2018 at 02:33 PM.
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Old 06-10-2018, 06:47 AM
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Trevor Hadlington
 
Join Date: May 2014
Location: Worcestershire in England
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I did have this problem .Once i broke the angled pipe on off the one side of the thermo time switch. Purchased a new one, but unsure of what pipe goes on which pipe on the side connection on the switch . But i found diagrams on Google images on how it was fitted. And i used it in both possitions so like you i dont think it makes any difference .
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Old 06-10-2018, 09:00 AM
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Ok so after searching the internet i found the inside drawing of the valve, the reason its connected with angle pin to consumption is because the bimetal plate is underneath this pin. So to get 100% sealed you have it connected this way, if you place it the other way it may suck wapor true the O ring seal on the bimetal all the time.

Last edited by mb201; 06-10-2018 at 12:49 PM.
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Old 06-12-2018, 06:07 AM
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Trevor Hadlington
 
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I have one for the W124 2.6 M103 engine . Dont think it woyuld be any difference to your M102.
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Old 06-12-2018, 06:26 AM
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Trevor Hadlington
 
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info

I found that the bent tube connector on the thermo time switch goes right to the throttle body see diagram
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Thermo vacuum valve w201-2011-01-14_001557_83514546.gif  
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  #6  
Old 06-12-2018, 06:31 AM
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Trevor Hadlington
 
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I was always unsure of the right connector to fit the pipes to on mine . May be some member will come up with the reason these are fitted and give us more information on how it works .
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Old 06-12-2018, 06:57 AM
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Quote:
Originally Posted by optimusprime View Post
I was always unsure of the right connector to fit the pipes to on mine . May be some member will come up with the reason these are fitted and give us more information on how it works .
Well if you read my post above you have the info..

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