| • | Pinion damage |
| • | Carrier wear |
| • | Spline damage |
Important: If the pinion end play is outside of these dimensions, replace the input carrier (640).
| • | Damaged splines |
| • | Blocked or missing lube holes |
| • | Damaged gear teeth |
| • | Worn bushing |
| • | Worn gear teeth |
| • | Damaged splines |
| • | A worn thrust surface |
Important: Before installing the sun gear, confirm that the machined grooved side is facing down.