Whirlpool WP9708175 Planetary OEM Part

Tore down transmission gear case of my Kitchenaid Professional 600 stand mixer and replaced worn components to include front and rear sleeve bearing, worm gear thrust bearing, worm follower gear, drive shaft retaining clip, center shaft o-ring, and dowl pin. Additionally, replaced black plastic transmission housing with metal one and new gasket, replaced entire planetary assembly, and repacked transmission with OEM food grade grease. After tear down, but before rebuild, l cleaned all components completely of all old gear grease including leakage in stand mixer itself. Note: Kitchenaid has not made an engineering change to the driveshaft/planetary assembly. The drive shaft is tension fit to the planetary. Over time and use, this tension is lost and the planetary plate slips down and eventually off the drive shaft. So, this repair will need to be completed again sometime in the future. I would have rated this experience 5 stars had this been corrected.

The vertical shaft showed a slight bend so I replaced the bent shaft with a new shaft. I should have done that when I was replacing the gears. Although we have not mixed any more bread, I ran the mixer at a both low and high speeds for several minutes without any more gear clashing noises. It now purrs ! The top bearing on the original vertical shaft had slipped down the shaft when I first examined it. This may have been the source of all of my problems with this mixer. It may have been manufactured or assembled incorrectly. But we got about 18 months of success before needing the gear and shaft repairs.

Removed trim screw from back of mixer, removed trim, removed 4 screws holding top to mixer, removed top, removed 4 transmission cover screws and removed cover, cleaned grease from inside, removed circlip, damaged gears and then planetary by taping out pin in shaft. Removed all grease and broken gear teeth, replaced with new. Reversed disassembly to reassemble. Runs like new. Longest part was cleaning out old grease and broken gear teeth. I am concerned about the broken teeth and scored shaft. Will monitor. Super fast delivery of parts.

Replaced all the gears due to stripped worm gear and metal contamination in the grease, repair was easy, mixer works just like new again, it lasted 12 years

By replacing the planetary, the problem was resolved with no further damage to the unit. The job was easily completed, though it would have helped A LOT if I had a set of snap ring pliers. Otherwise the job was easy.