Mazda CX-9 Grand Touring 2009 Manual page 623

12. Place the dial indicator so that the measuring probe contacts the top surface of one of the ring gear teeth
perpendicularly.
13. Secure the drive pinion and measure the backlash from when the ring gear moved.
Fig. 47: Tapping Adjusting Shim Between Spacer & Bearing Race
Courtesy of MAZDA MOTORS CORP.
Rear differential backlash of drive pinion and ring gear
Standard: 0.09-0.11 mm {0.003-0.004 in}
Minimum value: 0.05 mm {0.002 in}
NOTE:
14. If the backlash is not within the specification, adjust the gear case component by moving it in the axial
direction.
NOTE:
BEARING CAP ASSEMBLY NOTE
1. Align the bearing cap alignment marks to assemble the bearing cap.
Tightening torque 38-51 N.m {3.9-5.2 kgf.m, 28.1-37.0 ft.lbf}
2. Inspect the drive pinion and ring gear teeth contact points.
2008 Mazda CX-9 Grand Touring
2008 DRIVELINE/AXLES Differential - Mazda CX-9
Measure the backlash at 4 locations around the ring gear. Make sure
one of the 4 locations is within specification, and the minimum value
for the 4 locations is 0.5 mm {0.002 in} or less.
When moving the gear case component in the axial direction, replace
the adjusting shims. If the adjusting shim on the right side is
replaced with one that is 0.05 mm {0.002 in} thicker, replace the one
on the left with one that is 0.05 mm {0.002 in} thinner.