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#1
04-16-2012, 06:32 AM
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Name this part
Hello, I need your help naming the switch with the yellow arrows in the images below. What is it called or what does it do?. This belongs to a 1987 300D with 603 engine. Does anyone know what factory connector this switch goes to? It has a red wire that travels up the a switch next to Y29. I know its not Y30 engine overload protection switchover valve or Y29 Vacuum amplifier switchover valve.
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1987 300D 
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#2
04-16-2012, 06:47 AM
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Usually those micro switches are used to trigger the "idle status" of the engine. Since the 603 has an electronically managed idle that may be what it is for. On the gassers its used to signal "closed loop" at idle to the computer.
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-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#3
04-16-2012, 06:53 AM
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Also does anybody know what this clear looking filter (Man Filter WK43/1) belongs to , or what part of the vacuum system it should be hooked up too, or what factory connecter it hooks up to?
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1987 300D
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#4
04-16-2012, 07:12 AM
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I've heard talks of those filters being used to keep oil from flooding sensitive things if Vac pump failure occurs
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hum..... 1987 300TD 311,000M Stolen. Presumed destroyed
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#5
04-16-2012, 07:40 AM
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yes, it's usually just a simple lawn tractor fuel filter, or a gasser clear filter, a previous owner installed in the vacuum line to show if the shutoff diaphragm has ruptured, by collecting oil spatter, gives ya time to fix the problem before it fills the climate control or some other vacuum system with motor oil...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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