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Old 08-06-2007, 09:03 PM
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Vacuum line to transmission.

I got that line disconnected when pulling the head out , now cant find the fitting on transmission - talkin about line from T- fitting on ALDA , does anyone know where this line goes to ,on all the vacuum diagrams thats on this forum it shows that its going to transmission BK ,thats it.
Thank you.

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Old 08-06-2007, 09:06 PM
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This is on a '49 Buick??
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Old 08-06-2007, 09:09 PM
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Sorry forgot to mention its 1984 300sd.
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Old 08-06-2007, 09:12 PM
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Quote:
Originally Posted by symbolic95 View Post
Sorry forgot to mention its 1984 300sd.
Well.........then, maybe we can help you.

The line from the ALDA goes to the overboost protection valve on the firewall..........the horizontal port at the top of the valve.

BTW, it's not a vacuum line, but a pressure line with a signal from the intake manifold.
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Old 08-06-2007, 09:21 PM
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Brian that one is ok , the line im talking about coming from T-fitting ,another line is one you talking about , Mine is the long black line wich i think shoud go to the tranny.
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Old 08-06-2007, 09:29 PM
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Are you talking about this line? (ignore my mityvac)
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Old 08-06-2007, 09:36 PM
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Yes. theres 2 of them , Brian's and mine.
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Old 08-06-2007, 11:05 PM
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But where does it go to ,does anyone know?
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Old 08-07-2007, 12:51 AM
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It is routed to the vacuum modulator located on the side of the transmission.

Looks like:
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=24L15MYL825F1F6K9T&year=1984&make=MB&model=300-SD-002&category=J&part=AT+Modulator+Valve
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Old 08-07-2007, 03:43 AM
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Quote:
Originally Posted by tankdriver View Post
Are you talking about this line? (ignore my mityvac)
A few months ago this hose became disconnected on my 85 300D Turbo and even after putting it up on jack stands it took me forever to find out that it was supposed to connect to a little green modulator diaphragm valve thingy (or you could call it by one of the many zesty and coloful names I gave it that day) sitting obscured on top of the transmission nearly impossible to find when you have no idea what it is for which you are looking.

I hadn't realized yet that there are resources available here from which to gather information. Boy I sure have a lot to fix on By Tor when I'm done with Snowdog.
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Old 08-15-2007, 06:30 PM
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Quote:
Originally Posted by symbolic95 View Post
But where does it go to ,does anyone know?
Do you still need to find it? I forgot the camera today, but I was under the car - on my 300TD, the modulator valve is just above the trans fluid pan on the driver's side. Look up, in between the first (front of pan) and second bolts holding the pan on.

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