Customer Questions and Answers for Pinion Gear (Planetary) by Whirlpool

This planetary pinion gear is part of the stand mixer drive system. It meshes within the gear train to turn the planetary assembly, restoring smooth beater rotation when the original gear's teeth are worn, chipped, or stripped.

• Transfers motor torque through the gear train to rotate the planetary/beater hub
• Common fix for grinding or clicking noises from the mixer head
• Helps address slow, intermittent, or no planetary/beater movement
• Useful when inspection shows rounded or damaged gear teeth

• Disconnect power before servicing and remove the mixer's head/gearcase cover as directed by the service guide
• Note gear orientation; clean out old grease and debris before reassembly
• Inspect mating gears, bearings, and bushings; replace any worn components together to prevent repeat failures
• Pack with food-grade mixer grease, seat the gear fully, and verify smooth planetary rotation by hand before powering on