David B Fort Collins , CO March 02, 2024 Appliance: Whirlpool 4 1/2 Qt. Stand Mixer Classic - Tilt K45SSAC-0 Whirlpool Mixer K45ssac-0: Broken speed control and control arm. Clean & repack gear grease. How to replace Motor Housing Seal. Replaced the speed control and arm, cleaned and repacked gears. Replaced brushes even though the original were not badly worn. Reset low & high speeds Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours