Backlash adjustment system and method

A method of adjusting gear backlash of a wrist for attachment to a boom of a work vehicle, the wrist comprising a frame, a ring gear rotatable about a ring axis, and a motor assembly comprised of a pinion subassembly and a motor, the method comprising the steps of:

• unfastening the pinion subassembly fastened to the frame at a first pinion-frame index, the pinion subassembly comprising a pinion rotatable about a pinion axis, the pinion meshed with the ring gear when the pinion subassembly is fastened to the frame at the first pinion-frame index or a second pinion-frame index, the pinion axis a first distance from the ring axis when the pinion subassembly is fastened to the frame at the first pinion-frame index;
• unfastening the motor fastened to the pinion subassembly at a first motor-pinion index, the motor comprising an output shaft received by an internal spline of the pinion subassembly when the motor is fastened to the pinion subassembly at the first motor-pinion index or a second motor-pinion index;
• refastening, after unfastening the motor, the motor to the pinion subassembly at the second motor-pinion index;
• and
• refastening, after unfastening the pinion subassembly, the pinion subassembly to the frame at the second pinion-frame index, the pinion axis a second distance from the ring axis when the pinion subassembly is fastened to the frame at the second pinion-frame index, the difference between the first distance and the second distance being at least 0.2 millimeters.