Since it's a skid-steer (steering consists of slowing the rotation of wheels on side you want to turn towards) the whole setup is probably different. I'm guess

Since it's a skid-steer (steering consists of slowing the rotation of wheels on side you want to turn towards) the whole setup is probably different. I'm guessing it has two hydraulic motors, one for the left side and one for the right side, powered by a hydraulic pump driven by the engine.