I can't count the number of times I have had a tractor lift the front wheels off the ground. This goes back years, to my childhood early teen years. I've only had a tractor of my own the last 20 years or so. I've worked around tractors since I was old enough to go to school. At age ~10, I watched a fellow on a back hoe rig pick up a dime without breaking the ground. Someday I'll be that good, maybe. . .
Having the front end off the ground is no big deal. That's what steering brakes are for. Years ago, when three point mounts were 'rare', steering brakes were commonly used more than the steering wheel. Having the back end come up, now there is a scary thought. Scary is an understatement. . . I've never had it happen with a load. A few times on rough ground I've had one rear wheel float. No big deal again, that's why differential locks are put on tractors. But both rear wheels, no thank you. That is indicative of the tractor being grossly overloaded on the front end. Front end loaders are for handling manure or filling in the ditch after the tile is laid. Or lifting a crate off the back of a truck. But heavy pallets, that's what the rear forks are for.
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