Question about 1985 Mercedes-Benz 190

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Vacuum diagram of Mercedes 190D, 2,2

I do need a vacuum diagram of Mercedes 190D, 2,2 liters, year 1985.

Thanks in advance.

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  • yadayada
    yadayada May 11, 2010

    try the public library

  • Anonymous Mar 16, 2014

    Need total vacuum system diagram

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  • Master
  • 383 Answers

Neto 190D: You are asking about a vacuum diaphragm?
I'm going to take a WAG.. Your engine won't shut
down with the key?
If so, he is the way you find out:
In your injection pump, the vacuum diaphragm which kills the engine is the one which has the fitting pointing parallel to the ground.
The vacuum line which serves it is a brown/blue
To check the system, first check for vacuum in the line. Run the engine for a minute or so. Cap off the brown/blue line.
Turn the ignition switch off and then with hose in hand, uncap it and you should hear a hissing sound. If you have a vacuum guage, obviously, use it for the test, you need a minimum of 10 inches to kill it.
To test the pump diaphragm, you can rig a vacuum line to a known vacuum source close to the main "T". Run the engine and with the line connected to the diaphragm, connect it to the good vacuum source, if it kill the engine, the diaphragm is good. If you have a hand vacuum pump it would be more ideal, because you could check the diaphragm for small leaks.
If the diaphragm is bad, it is easy to replace on the pump.
The shutoff diaphragm lists for $86.00
Is my shot in the dark correct?
Even though I am a Nissan Master tech, I also specialize in Mercedes-Benz and specifically Diesels, so if you need help, I'm here. I went through a few Mercedes Schools and have been swinging Iron in Mercedes since the 70's
I might be a little more informative than the public library.

Posted on Apr 24, 2009

  • Bill Hackett Apr 27, 2009

    Sometimes people lack confidence in them selves in following instructions, consequently want diagrams to fix their problems.

    Over the years, I have done some night class teaching. What I had discovered is that some diagrams would actually be more confusing and actually make the attempt to repair their car more difficult because it has thrown things into the works which the very inexperienced can not relate to.

    What I found is that by trying to be as descriptive as possible, utilizing colors of wires or lines, their locations (including references to things located around them for those with less understanding of what is under the hood), I would take, in some cases "baby steps" in proceeding thought the repair process. Along the way, I may explain what a part does and why it does it so that the repairing party actually is learning something aside from putting parts in their prospective places. I may list cautions which avert catastrophes or stupid mistakes which I have seen done over and over again during my teach days. I would not be instructing professionals to such a depth on certain items in this respect. The diagram Mercedes supplied for this car could create confusion for a week end warrior. If you just look at the colors described,. you identify the components and their orientation in the engine compartment as I has described, it is hard to fathom NOT being able to route the vacuum lines where they belong. Should you still have the problem, you may have a split hose or cracked check valve. Have faith in your self.

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http://rapidshare.com/files/226590130/function_diagram_of_model_201_190_D_.jpg.html

thanks..you can use a photo viewer preferably Picasa Photo Viewer to see the diagram in high definition...just inform me if you have downloaded the copy...

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rbbnsent: Let me see if I can help you.Fird, your vacuum lines are color coded if you look closely. As they age, some of them get difficult to differentiate from. One place where you can positively ID them, is where the line has not been exposed to the elements. That is where they have been inside a vacuum hose.
Ready?
Starting off, the vacuum line which shuts off the engine is a brown/blue line it goes to a diaphragm that has the fitting facing parallel to the pump body (runs parallel to the ground) Hook the line into the diaphragm.
Next, you have a vacuum hose which has a check valve on it.
Connect this one to the fitting which runs straight up.
There should be a white line near by. Hook the line up to the fitting just behind the one you just hooked up.
There should be a Black line going into the back of the pump.
Alright, coming off the vacuum pump, you have a fitting which should 4 lines excluding the vacuum source.
Now the vacuum source should have a check valve in line with it.
The following colors should be going into this "T"
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I'm pretty sure, I have far exceeded the number of vacuum hoses which you found disconnected.
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