Seems this started recently. As I try to use the loader to lift anything, seems that the right rear wheel lifts, feels like it's going to roll over. Not matter if it's level ground or not. I do have ballast on the rear....what can cause this, very shaky situation.
The original question stated differently is: Why does my one rear tire lift off the ground when using my loader?
Common knowledge is that rear tires lift off the ground if there is not enough weight on the back of the tractor to counter the see-saw effect the weight in the loader causes, with the front axle being the pivot point.
But unlike a playground see-saw, the front axle has a center pivot point. If the playground see-saw had a similar pivot point, as soon as someone leaned to one side, the see-saw would fall to that side.
Same with a tractor. As soon as the rear wheels start to lift off the ground, if one side of the bucket holds more weight than the other, the tractor will tilt to that side. So the rear wheel on the opposite side will lift off the ground.
Two ways where this might not happen: First, with enough weight on the rear, the rear wheels will stay planted on the ground, so the question never comes up. Second, if the weight in the loader bucket is evenly distributed, and the tractor weight is balanced side to side, then both wheels may lift off the ground together, until any slight imbalance causes the tractor to tilt to one side and the rear tire touches the ground on that side (and the tractor may continue tipping over unless something is changed).
So it appears the OP’s issue is normal for a tractor that does not have enough rear ballast.
So how could we make what the OP has experienced happen with an empty bucket? One way would be to hook one end of the bucket under a tree root and try to pull the root out of the ground. My experience is that the rear wheel on the opposite side will lift off the ground, unless I have enough weight on the back to cause the loader to reach its lift limit, and trip the pressure relief valve.
Now what could be changed in the loader mechanism that could cause a rear wheel to lift off the ground when the bucket was free and empty? I can’t imagine anything, because a downward force needs to be felt in front of the front axle to cause lifting of the rear axle.
So we come back to the fact that if there is enough ballast on the rear of the tractor, the rear wheels will not lift off the ground. And it’s unlikely the loader mechanics themselves can cause the rear wheels to lift, unless working against something like weight in the bucket or something restricting movement like a tree root.
So the conclusion is what the OP experienced is normal for a tractor lacking enough ballast for the work being done. And not caused by the loader mechanism itself.
