Pinion and Ring Gear

- Ring and pinion gears are matched sets and both are replaced any time a replacement of either is necessary. A new pinion flange must be replaced when both ring and pinion gear are replaced to maintain proper system balance.

Inspect
- Pinion and ring gear teeth for cracking, chipping, scoring, or excessive wear.
- Pinion splines for wear.
- Pinion flange splines for wear.
- The fit of the pinion gear splines on the pinion flange.
- The sealing surface of the pinion flange for nicks, burrs, or rough tool marks that could cause damage to the seal's inside diameter and result in an oil leak.
- All worn or broken parts and replace if necessary.