I have removed my own drive lines on the 300D and 240D, not really much difference between the two cars.
Mark the two DL sections with something, I use cheap white Nail Polish.
This give you a reference if the 2, 1/2`s come apart, or you decide to remove the two sections first.
Remove the 3 bolts on the Diff end, leave Disk on Diff.
Remove the 3 bolts on the Trans end, leave Disk on Trans.
Loosen the 46mm Nut.
Loosen the 2 bolts (14mm?) on the Center Support.
Using a pry bar, pry the DL off the rear Disk.
Then pry the DL loose from the Trans end.
Tighten the 46mm nut.
Remove the 2 14mm bolts.
Then walk the whole unit to the rear and out.
I had my DL U-Joint replaced in the 80 240D, they also replaced the bearing and Support. 33K miles later,
had a vibration. Support was torn all the way around.
So, ordered new parts.
I replaced my center Support and Bearing. Bearing was a SKF made in Korea.
Febi Rubber Support, made in China.
Trans. Mount, Febi, made in China.
Just a heads up.
We`ll see how long these last.
Original MB support, over 300K miles, replacement 33k miles.
Got it all from this site, Febi, Reinz, and Euro were the options as I remember.
Dealer will be my next purchase.
Can`t go too wrong on the rubber/plastic Collar. URO or???
Charlie