Umm, my FIL broke a dozer removing stumps at my old place. It was a small rental dozer (don't even remember the make or size as this was about 8 years ago) that was brand new at the time. The rental company dropped it off and it had less than 2 hours on it. First thing he did was head for the biggest stump head on and rammed it. The stump didn't move /forums/images/graemlins/mad.gif, so he backed it up and rammed it again. And again. And again, until a weld holding one of the hydraulic rams broke. /forums/images/graemlins/crazy.gif
Luckily, the rental company took it s a manufactures defect, and didn't charge us for the repair. /forums/images/graemlins/smirk.gif
Keith