Each piece of equipment was designed to perform a specific task. Excavators aren’t cranes and wheel loaders weren’t made to carry workers in the bucket and used as an aerial lift. Pick the right piece of equipment for the task at hand and use it as the manufacturer intended.
Don’t overload or overwork equipment. Be mindful of the payload or lift capacity of the equipment. This may require getting a bigger piece of equipment if what you have isn’t enough to get the job done. If lifting material, make sure all riggings are properly secured. Don’t try to go too fast when operating equipment, especially on slopes.