Mazda RX-8 Workshop Manual page 2315

NOTE:
If any header tabs are missing from the core, replace the radiator.
4. Remove the radiator outer tank and O–ring (gasket) from the core header when all of the
tabs are opened.
5. Inspect the gasket surface of the radiator core header to ensure it is clean and free of foreign
material or damage.
6. Inspect the radiator outer tank for warping. If it is warped, replace the radiator tank.
Radiator Outer Tank (In Tank Oil Cooler) Assembly Note
1. Install a new O–ring and ensure it is not twisted.
NOTE:
The old O–ring must be replaced.
2. Position the radiator tank in the original direction to the core using care not to scratch the
tank sealing surface with the header tabs.
NOTE:
Step 3 will set jaw opening to the correct specification.
3. With the jaws of locking–type pliers (vise grips) closed and locked, turn the adjusting screw to
position the jaws against the drill bit with the diameter measured (height) in removal procedure
1. Tighten the lock nut on the adjusting screw against the handle to lock the adjustment in
place.