Seal Ring Assembly Note

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Install a new seal ring to the valve part of the pinion shaft using the SST .
After installing the new seal ring, seat it properly using the SST .
Install the snap ring.

Fig 1: Installing SST Over Seal Rings
Courtesy of MAZDA MOTORS CORP.