Mazda MX-5 Miata Sport 2007 Manual page 463

2006-08 TRANSMISSION Automatic Transmission Overhaul - MX-5 Miata & RX-8
9. Using a dial gauge, measure the inner diameter of the clutch hub bushings.
Clutch hub bushing inner diameter
Front side: 23.037-23.062 mm {0.90697-0.90795 in}
Rear side: 23.037-23.062 mm {0.90697-0.90795 in}
CAUTION:
10. Using a dial gauge, measure the inner diameter of the clutch hub component bushings.
Clutch hub component bushing inner diameter
Front side: 33.312-33.337 mm {1.31150-1.31248 in}
Rear side: 33.312-33.337 mm {1.31150-1.31248 in}
CAUTION:
2007 Mazda MX-5 Miata Sport
Measure at different places and take an average. If it exceeds

the specification, replace the clutch hub with a new one.
When the clutch hub is replaced, Inspect the contact surface

opposed to the input shaft component.
If the surface of it is scratched or has changed color, replace

the input shaft component with a new one.
Fig. 153: Measuring Inner Diameter Of Clutch Hub Bushings
Using Dial Gauge
Measure at different places and take an average. If it exceeds

the specification, replace the clutch hub component with a new
one.