Shearing the bolts that hold the sub frames to the tractor was an issue with Farmtrac Loaders. That issue was never correctly addressed by them. Some of my customers have installed channels from the sub frame to the final drives on the rear axles. The Great Bend loaders that I use to sell, already had that frame member on the loader. They don't shear the bolts off at the sub frame. Pushing on the bolts was a bad design from the start. The loader sub frame pressure points should be mounted on the front, mid , and rear of the tractor. Also remember, the loader is not designed to do heavy digging. Use a rear tine box blade to lossen soil first, then scoop it up with the bucket. Farm equipment dealers won't tell you this for fear of loosing a sale. As far as lifting, the hydraulics of the tractor do have the ability to lift the rear tires off the ground with a heavy object in or attached to the bucket. The weight cap. that are used at the piviot points are correct that were refered to above. All tractor lifting cap will changed with age of the unit. Remember, saftey and common sence will have to be used when determining lifting cap. of your tractors loader.