Operation CHARM: Car repair manuals for everyone.

Pinion and Ring Gear

- Ring and pinion gears are matched sets and must both be replaced any time a replacement of either is necessary.

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