15. REAR WHEEL/AXLE/SUSPENSION DRIVING MECHANISM MXU 300/250 Remove the oil cap and a horizontal type dial indicator on the ring gear through the filler hole. Turn the ring gear back and forth to read backlash. Standard: 0.05 0.25 mm (0.002 0.01 in) Service limit: 0.4 mm (0.16 in) Remove the dial indicator. Turn the ring gear 120° and measure backlash. Repeat this procedure once more. Compare the difference of the three measurements. Service limit: 0.2 mm (0.08 in) If the difference in measurements exceeds the service limit, it indicates that the bearing is not installed squarely, or the case is deformed. Inspect the bearings and case. If the backlash is too small, replace the ring gear right side spacer with a thicker one. Backlash is changed by about 0.03 mm (0.0012 in) when thickness of the spacer is changed by 0.06 mm (0.0024 in). Three shims (from A to C) are available in thickness increments of 0.03 mm (0.0012 in). Right ring gear shims: A: 1.53 mm (0.0612 in) B: 1.5 mm (0.06 in) C: 1.47 mm (0.0588 in) Left ring gear shims: Left Ring Gear Shim Right Ring Gear Shim A: 1.53 mm (0.0612 in) B: 1.5 mm (0.06 in) C: 1.47 mm (0.0588 in) 15-27