I just did a brake job on my MF202. It's basically the same as my 8N, just more power. Any jacking I do has to be done on dirt. I recently purchased a nice off road floor jack. It has a big flat plate on the bottom of it so it can be used on dirt.
Doing a brake job, you will want both tires up off the ground. My tires were loaded with water (southern California climate) so I drained them. I would not even consider messing around with man handling loaded tires. I placed that jack under the rear end and jacked it up high enough to get a good set of jack stands under each axle with the jack stands setting on solid wood. I let the pressure off the floor jack then gave it a couple pumps again so it was still solid under there. No need to remove it. It will not be in the way when doing a brake job.
So, that's how I did it using a floor jack. I also jacked my 8N up with both wheels off the ground when I adjusted it's brakes. I had no floor jack so I used a hydro bottle jack. It had a big screw on the top of it to adjust to your frame. I placed the jack on a good solid thick wood block and jacked it up to get a jack stand under the axle. Then I did the other side so I had both tires up off the ground. So it was sitting on good solid jack stands that were on good solid wood. Once you get those tires off, everything is pretty accessible. You don't need to get any of your body parts under the tractor. So, a good hydraulic bottle jack and good jack stands and solid wood blocking will let you do the job safely. Again, I would certainly remove any ballast from those tires.
