Ring and Pinion Gears

Inspect
- Ring and pinion gear teeth for cracking, chipping, scoring, or excessive wear.
- Pinion gear splines for wear.
- Pinion flange splines for wear.
- The fit of the pinion gear on the pinion flange.
- The sealing surface of the pinion flange for nicks burrs, or rough tool marks that would cause damage to the seals inside diameter and result in an oil leak.
- Replace all worn or broken parts.

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