D2 oil pan removal

Not sure if its the same but on my J series, I put a 3/4 by 3 bar of flatstock across right where the radiator mounts to the block. When I was doing some work on the Undercarriage. I figured by spreading the stress across there. It shouldn't break anything. (it held fine). I can't remember the size of the tractor in an old photo but same idea as you. Stretch a chain across to hold the engine up!
When I had the Main spring out of my tractor, I blocked under the clutch housing and seem to think that I had a jack stand under the front as a safety??

Thanks drujinin,
The chain works good but I want to get it higher. I built a press jig out of a short piece of I-beam so I can apply pressure on the four bolt heads of the radiator bracket by cutting out reliefs for those ribs on the bracket. I'll press up on that with another 4 foot long beam until I can get two 18 blocks of maple under the beam just forward of the tracks. Then I'll set the engine and beam down on the blocks supporting the I- beam bridge at the ends. This should give me plenty of room to crawl under and safely remove the pan. I need the Pistons out before snow which will be coming to Wisconsin soon enough. Frost warnings tonight up here.