8275 Motorized Bulldozer. I actually started this set a while back, but half way through i realised that the set was missing afew pieces, so I had to bricklink the missing parts.
Advice for people who plan to build the set, pay real attention to the placement of the power functions cables, i didn't follow the instructions 100% and realised after i built the set that the PF cables get caught on some of the gears and this results in the front part not moving up correctly.