I came across a pretty good vacuum routing chart while doing some transmission research on my 1993 W124. I hope this is representative of the vacuum system on my 1993 OM602.962.

The vacuum routing sticky in this forum didn't have a chart like this for a W124 that I could find.

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1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

That looks like the correct diagram,if you change to a pressure wastegate actuator you can eliminate all the vacuum stuff to the left of the engine in that diagram and all the headaches that go along with it.Do a search for GSXRs thread on the subject and save yourself some future problems and cash. Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles

http://www.peachparts.com/shopforum/showthread.php?t=212097

(Comfy Chair ,lots of Beverages and Snacks...You'll be reading for a While)

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'84 300SD sold
124.128

Ummm, that's going to take a long time for this newbie to digest.

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1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

It's a "Piece o' Cake" !
1.Obtain Pressure Operated Wastegate and replace your Vacuum Operated One
with it.
[Assumption:Your Diagram IS ACTUALLY the "as Built" Vacuum Diagram for yourChassis]
(I don't know that it's not,or that it's not 100% accurate)
2.Obtain The "F" shaped Vacuum fitting pictured below[picture Courtesy GSXR] and
install it on your Vacuum Pump (and Vacuum lines)as pictured.
3.Take All that Crap to the passenger side of the Valve Cover and throw away
or "Re-Cycle".[picture #2 also credit to GSXR]

Enjoy a Cleaner running,more powerful Diesel.

GSXR's pictures of process:
http://www.w124performance.com/images/OM602_intake/

Attached Thumbnails

   

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'84 300SD sold
124.128