Should I use leveling system for tire repair/maintenance?

I had someone on a "brand" forum tell me that I could use my 6-point level up system to raise my unit in order to grease my wheel bearings. He was a farmer and had a unit like mine and had spent years fixing his own equipment on the farm.

I tried it and he was correct. The system will raise the wheels off the ground. I haven't left it in the air yet to service my bearings. When I do I will place several jack stands under it just for added security, just like I would if I was using my floor jack.