Whirlpool WP9709511 Transmission Gasket OEM Part

This time I replaced the front and rear bearings and thrust bearing and all the gears. The hardest part is thoroughly cleaning out all the old grease. After re-greasing and assembly mixer ran like new. I wish a more robust worm gear was available. A snap ring plier is a must for this job.

I make a lot of bread doughs with my KitchenAid mixer, and it's used 2-3 times a week for large batches of dough. The gears began slipping, and I decided to take the mixer apart, and replace the worn gears. Replacing the transmission housings plastic cover, with the newer metal one will probably result in me not having to repeat this process, as the plastic one broke at the screw holes under pressure. I also replaced the worm gear, and the sleeve bearings.

When I opened it up, the pinion gear had worn away at the lower gear housing, filling the housing with metal shavings. I replaced the lower gear housing and the pinion gear. I had to adjust the brass sleeve/bushing that the attachment shaft slips through on the planetary. The sleeve had shifted up, toward the lower gear housing which was causing the pinion gear to ride too high in the gear housing. Using a wooden dowel, I was able to hammer it back into the planetary housing.

I opened the mixer and inspected the gears as I saw in a few how-to videos. Some were clearly worn, and some I was not sure of. I ended up replacing all of the gears. The total time to complete was about 1 hour. My wife just used it this past weekend to make 200 cupcakes and it worked like new! These mixers are expensive to replace and pretty easy to fix!

I've had my Kitchenaid Professional 6 for some time and eventually, the planetay head detached and fell off. Along with ordering a replacement, I ordered replacement gears as well, just to make sure everything was good. Sure enough, after removing the gear cover, some of them had damage. The entire process to replace the planetary and gears was simple. The only time consuming part was cleaning out all the old grease before re-assembly and greasing all the new gears. Also grease leaked past the old gasket into the body, so I had to clean that up as well. The only tool I had to purchase was some snap ring pliers, which I found a pair for $5 at a local hardware store. So again, besides dealing with the grease, it was quick and painless.