Upper Bearing, Oil Seal Disassembly Note

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Set the SST as shown in Fig 1.
Using a press, remove the oil seal and upper bearing without applying pressure to the edge of the valve housing.

Fig 1: Removing Upper Bearing And Oil Seal
Courtesy of MAZDA MOTORS CORP.