The coolant drain on the block is on the passenger side just in front of the starter motor. It looks like a short stub of pipe with a hex nut so that you can get a wrench on it. I thought I had a photo but don't or at least can't find it. Once you have the drain loosened a bit (takes a bit of torque and the location is not the best, must access from underneath) you can put a hose (1/2 inch ID worked for me) in the little pipe so the coolant drains into a pan and not all over the ground and you.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

THANK YOU!
I was busting my ass looking for it on the drivers side
Just ordered $600 worth of parts, including water pump, vacuum pump, both engine mounts all filters, oils and so on...
Will see if I can resurrect this Benz from the walking dead)

It seems unlikely a weld repair will work in that instance. A good used turbo is the way to go...they hardly ever fail. I have never seen one like this before.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.