I'm trying to get the radiator out of my M-B W116 1980 SD Turbo Diesel.
This is a barn find I'm getting back on the road after 15 years sitting. The problem I am having is that the Radiator is stuck in the car. This radiator has rubber blocks on each side of the radiator that fit into steel channels. The rubber is still fairly soft but is stuck in these steel channels.
Congrats on your project.
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The oil cooler and radiator are bolted together and set into the slightly tapered channel.
The keeper springs on either side of the assembly keep tension on the top of the rubber side blocks.
The spring on the PS is hard to remove with the wind deflector (behind the headlights) being in the way.
You may have to remove the PS headlight bracket to access the three sheet metal screws that hold the wind deflector in place.
I've found it helpful to narrow the width of the oil cooler/radiator assembly.
Remove the nuts on the two carriage bolts that hold the oil cooler to the radiator.
Then you can wiggle the bolts out enough to shift the oil cooler towards the radiator a mm or so with a pry bar or large screwdriver.
Of course, by this point you should have already removed the keeper springs, fan shroud, coolant hoses, engine oil cooler hoses and transmission oil cooler hoses.
A penetrant soak to free the rubber to metal adhesion is definitely helpful.
On stubborn radiators that would not budge when pulling from above, I've pushed up from below with a trolley jack placed under the sturdier oil cooler.
Then I rocked the radiator side to side while pulling up on it, this allowed the radiator to finally creep upwards and out.