How do you check ring and pinion backlash with a dial indicator?

To check ring and pinion backlash with a dial indicator, first secure the dial indicator to a stable point on the differential housing, ensuring the probe touches the ring gear tooth. Rotate the ring gear back and forth to find the point of maximum backlash, noting the dial indicator's reading at this point. The measurement should typically be within the specified backlash range for the gear set. Adjust the gears as necessary to achieve the correct backlash if the measurement is outside the acceptable range.