Pinion and Ring Gear Inspection

Ring and pinion gears are matched sets. When replacement of one or the other is necessary, both the ring and pinion gear must be replaced.

• Check the pinion and ring gear teeth for cracking, chipping, scoring, or excessive wear.
• Check the pinion gear splines for wear.
• Check the pinion flange/yoke splines for wear.
• Check the fit of the pinion gear splines on the pinion flange/yoke.
• Check the sealing surface of the pinion flange/yoke for nicks, burrs or rough tool marks that could damage the seal and cause an oil leak.
• Check for worn or broken parts and replace as necessary.