Mazda CX-9 Grand Touring 2009 Manual page 250

2005-08 TRANSMISSION Automatic Transaxle Overhaul (AW6A-EL) - CX-7, CX-9 & Mazda 6
If the surface of it is scratched or has changed color, replace the planetary sun gear with a new one.
2. Using a dial indicator, measure the inner diameter of the planetary sun gear bushings.
Rear planetary sun gear bushing inner diameter
Front side: 24.2 - 24.226 mm {0.9528 - 0.9537 in}
Rear side: 24.2 - 24.226 mm {0.9528 - 0.9537 in}
If it exceeds the specification, replace the planetary sun gear component with a new one.
Fig. 168: Measuring Inner Diameter Of Planetary Sun Gear Bushings
Courtesy of MAZDA MOTORS CORP.
When the planetary sun gear component is replaced, inspect the contact surface opposed to the
intermediate shaft.
If the surface of it is scratched or has changed color, replace the intermediate shaft with a new one.
REAR PLANETARY GEAR COMPONENT AND ONE-WAY CLUTCH COMPONENT ASSEMBLY
Components
2008 Mazda CX-9 Grand Touring