Disassembly Note

Inspect the differential.
1. Inspect for damaged or worn gears.
2. Inspect for cracked or damaged gear case.
  
  Fig 1: Removing Differential Cover
  Courtesy of MAZDA MOTORS CORP.
Remove the differential cover.
1. Remove the differential cover bolts.
2. Remove the differential cover screws.
3. Remove the differential cover.
  
  Fig 2: Removing Differential Side Gear Thrust Washer And Differential Side Gear
  Courtesy of MAZDA MOTORS CORP.
Remove the differential side gear thrust washer and differential side gear.

Fig 3: Removing Differential Pinion Shaft Lock Pins
Courtesy of MAZDA MOTORS CORP.
Remove the differential pinion shaft lock pins.

Fig 4: Removing Differential Pinion Shaft Cage
Courtesy of MAZDA MOTORS CORP.
Remove the differential pinion shaft cage.
1. Remove the differential pinion shafts.
2. Remove the differential pinion shaft cage.
  
  Fig 5: Removing Differential Pinion Gears And Thrust Washers
  Courtesy of MAZDA MOTORS CORP.
Remove the differential pinion gears and thrust washers.

Fig 6: Removing Differential Side Gear And Thrust Washer
Courtesy of MAZDA MOTORS CORP.
Remove the differential side gear and thrust washer.

Fig 7: Removing Bearing (Speedometer Drive Gear Side)
Courtesy of MAZDA MOTORS CORP.
Using the special tools, remove the bearing (speedometer drive gear side).
Remove the speedometer drive gear.

Fig 8: Removing Differential Bearing
Courtesy of MAZDA MOTORS CORP.
Remove the differential bearing.