| • | The pinion gear shaft |
| • | The thrust washers |
| • | The differential case for wear, cracks and scoring |
| • | The fit of the pinion gear shaft in the differential case |
| • | The fit of the differential side gears in the differential case |
| • | The fit of the side gears on the axle shafts |
| • | Wear |
| • | Cracks |
| • | Scoring |
| • | Spalling |