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Old 11-13-2003, 10:26 PM
WANT '71 280SEL's Avatar
I'll Go Upside Your Head!
 
Join Date: Jan 2003
Location: Dallas, TX
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What are the 4 hoses coming to/from the heater servo?

I am speaking of the 1979 300SD. I have the servo out now and am just going to bypass it for now until I find a cheap used one. Mine just will work off and on, it is NOT cracked in any way shape or form. I am going to keep the aux. water pump on and just make a shortcut for the coolant to the core. The hose that has continuous flow from the WP is going to be attached to the core hose. Then there is a hose that runs along the firewall and goes into the block. I assume that is the hose that the coolant goes through when the heat is off. I may just block that hose if the 4th mystery hose doesn't go there? What do I do with the last hose that goes into the servo? I don't believe it has continuous flow? It is parallel with the one that is continuous from the WP. Should I just connect that mystery one to the hose that goes to the block? I will try and take pics tomorrow morning, but I wanted to do this tomorrow.
Thanks
David

P.S.
If you have a good working servo that you would sell for less than a right arm let me know. Be sure to use Mercedes in the subject line so it doesn't go out with the junk mail.
Thanks Again
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2000 Honda Accord V6 137k miles

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  #2  
Old 11-13-2003, 10:42 PM
Kyle Blackmore's Avatar
Mostly Harmless
 
Join Date: Sep 2001
Location: almost beyond Hope...B.C.
Posts: 897
David , you might want to look here at their climate control kit. It looks like something you could put together with plumbing parts , but it would work .
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1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
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  #3  
Old 11-13-2003, 11:14 PM
Kyle Blackmore's Avatar
Mostly Harmless
 
Join Date: Sep 2001
Location: almost beyond Hope...B.C.
Posts: 897
David , I was just looking at my car and if it were me I would hook the hoses together the same way they are on the servo. Get some barbed hose connectors ( with a short nipple between if required)and then you will have heat at all times. The price of these servos is just stupid .
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1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
2007 R350 4matic- The Black Pearl
2011 Ford Ranger-Work truck
1974 25' Trojan Sea Raider- 'Grannyknot'
2002 215 cm Atomic DH skis- Canadian SDH record holder, 175.5km/h- Vars 2010
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  #4  
Old 11-14-2003, 08:18 AM
WANT '71 280SEL's Avatar
I'll Go Upside Your Head!
 
Join Date: Jan 2003
Location: Dallas, TX
Posts: 3,378
Does the coolant from the core go straight to the block or does it go back to the servo? I think the 2 inlets on the servo 'Y' into the one that goes to the block. Then when the servo opens it sends one of the coolant hoses to the block.
David
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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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