Mazda MX-5 Miata Sport 2007 Manual page 458

2006-08 TRANSMISSION Automatic Transmission Overhaul - MX-5 Miata & RX-8
Fig. 143: Identifying O-Ring On C3 Clutch Piston Component
40. Remove the O-ring from the C2, C3 clutch drum.
Fig. 144: Identifying O-Ring On C2, C3 Clutch Drum
CLUTCH DRUM COMPONENT AND F4 ONE-WAY CLUTCH INSPECTION
1. Inspect the lining of all drive plates. (C1)
If the lining is flaking or has changed color, or if it is worn or the print mark is wearing away,

replace it with a new drive plate.
When replacing, inspect the contact surfaces between the retaining plate, driven plate and drive

plate.
If they are scratched or have changed color, replace with new parts.

NOTE:
2007 Mazda MX-5 Miata Sport
Before replacing with new drive plates, soak them at least 2 h in

ATF.