How to Troubleshoot & Replace Whirlpool AP8072884 / W11805888 Gasket

Replaced the center gear and since they sent the hub along I replaced that too just to be safe. Used the live chat before ordering to make sure I was ordering the correct part. The person I chatted with was very nice and very helpful and parts came in good shape, and just as ordered. Replaced the stripped gear the next day and added a bunch of grease and the mixer works like new. Was very impressed with their diagrams and helpful videos as well as their large selection of parts. The other parts I ordered, the vertical shaft, pin and gasket are for my daughter-in-law's mixer - it's been out of commission for 3 weeks as it was leaking grease. That is an older mixer and I was afraid we wouldn't be able to get parts, but they had them and as soon as I can get together with her we will have hers fixed up as well. I particularly like their helpful videos. I can't tell you how much I appreciated that. I generally work on my jeep and maybe general construction around the house. I had never taken apart a Kitchenaid mixer before and while I would have attempted it without the video, it certainly went much smoother with some instruction. We live in a small town, and no longer have anyone around to work on this type of thing. Most products are made to be disposable, so I suppose as the older guys have passed no one wants to take it up. I might have figured out how to get into the mixer without the video, but this was very helpful and the only other solution is to ship it off to one of their service centers and wait a month for it to be fixed and returned. Appliance Parts Pros prices are reasonable and I will definitely be doing business with them again. Thank you. (I want to note, below where it asks how difficult it was to repair - if I had found your web site 1st instead of some of the others I was on prior to that - it would have been an easy repair) 

The main mission of the project was to simply replace the speed control lever.  Doing plenty of internet research I learned lever replacement requires opening of the cavity that contains grease for all of the gears. Additionally, that grease can congeal over time and fail to adequately protect internal gears. Until this job to replace the speed control lever, I never thought of needing to inspect the grease or internals of my 14-year-old mixer.  Based on this neglect, I prepared for a full grease replacement and the potential discovery of damaged parts. In addition to Appliance Part Pros videos, I strongly recommend watching Mr. Mixer 3 part series on YouTube for re-greasing Kitchenaid artisan mixers before planning the job. I learned many details on tools, supplies, and other tips/tricks to plan well for the work and minimize the downtime of my mixer. Parts I ordered from AppliancePartsPros.com prior to starting included:  Gasket, and Speed Control Lever. I ordered from another vendor 14.1 oz (probably enough for 2 grease replacements) of Super Lube Synthetic Multipurpose Grease that was NLGI Grade 2 (analogous to the viscosity of peanut butter) and that had an NSF Rating of H1 Food Grade with documentation available online. While working the job, I played/paused the Mr. Mixer YouTube videos as I progressed. During the inspection, I discovered the grease was congealed and the plastic worm gear was starting to wear down. I used nitrile gloves and a plastic drywall knife, and lots of paper towels to remove the spent grease,  a messy job but satisfying once complete.  I ordered two new plastic worm gears (the extra one for contingency next time I regrease) from AppliancePartsPros.com which arrived in a few days. After replacing the broken parts, re-grease, and reassembly, the mixer runs smoothly. 

I guessed a gear was stripped. After looking up the part and seeing there was an attached video on how to replace the gear, I thought not too hard. So I tore down the mixer and found the worm gear stripped. Before I went further I ran the motor to check for a bent shaft and cleaned the teeth on the shaft to make sure they were not damaged. All was okay so I ordered the worm gear & bracket assembly along with a new gasket. I am not sure if the old one was already broke or more likely I broke it in prying the two halves apart. You might put a mention about the gasket in the video as my mixer didn't come apart nearly as easy as in the video and required some careful prying. After I ordered the parts while I waited their arrival, I cleaned all the old grease out of the mixer. When I got the bracket assembly I decided to use to old bracket because the new one didn't have the dowel pin on top. Instead it had a cast pin that was not a tight fit. So I swapped the gears between the old and new bracket greased everything up good and reassembled. Another thing came up during reassembly. I had put a goodly glob of grease in the top bushing of the vertical center shaft and experienced hydraulic locking preventing the two halves from completely going together easily like I thought they should. As soon as I pulled them apart I realized that all the grease could not easily squeeze out and I wiped the end of the vertical center shaft off and that removed the last traces of the old grease and enough of the excess grease that the two halves went together like they should on the second go around. knowing now what was causing the problem I could have just use the screws to pull the halves together but I didn't want to force it together not knowing why this time it was being difficult when I had no problem with the shell while I was working on the mixer awaiting the parts. After I had the mixer together and before putting it back on the stand I did a test run. Everything ran so back on the stand it went. Now I just need a bowl and to decide what to do with 3 Kitchenaid mixers, hers, mine, and now the street rescue. I am going to say the project took 30-60 minutes but I actually spent a lot more time, A) I shot the circlip into the air, it fell to earth I knew not where (found it after looking and looking when I pulled my sock off and it fell to the floor) B) going after all the old grease in the mixer as I put in an upgrade grease of a different type. 

Took my time and disasembeld the mixer and cleaned old grease from internal gear box. put new greas in and put it back together. A piece of cake!!!!! 

Used your video to dismantle mixer. Grease is separating and leaking oil. After grease is cleaned out I found the mixer didn't need any of the parts ordered. Worm gear looked brand new. Found out later that the mixer sat unused in a hot Texas garage for 2 years. Heat destroyed the grease. Replaced grease and put back together. Will keep parts for the next one I find. This little project was a lot of fun. Tools used Various screwdrivers scissor clamp to pick up parts punches to remove/insert pins brush with heavy nylon bristles to remove hardened grease retainer ring pliers lots of paper towels mineral spirits to remove grease - avoid motor area 

The parts I ordered from Appliance Pro got her back in business for making bread, cookies and other baked goods. The mixer is her life line for baking. 

Replaced the armature bearing at the front of the mixer next to the gear case and replaced the gasket on the gear case. 

For most 20-year-old KitchenAid Blenders the grease packed inside begins to break down into UCK and oil which will drip through the old gaskets. After breaking down the case and removing all of the old grease and oil I cleaned all the gearing and shafts. I replaced the case gasket, the 2 shaft gaskets that the lower orbital gear slides up, and then the o-ring on the main shaft after everything was installed. I did a break-in run on med speed for one hour and then tapped the chrome ring off of the lower unit and flipped the blender over and checked the 9 mounting screws to make sure they were still tight. Reinstall the ring and the blender is ready for the next 20 years. The Kitchen Aid site as well as others will give you the parts diagrams, as do many other parts sites. It's good to have a copy for future reference. Here at Doc' Shop we use APPros parts on many of our jobs and have always had successful job outcomes. They have good pricing and FAST shipping. Good luck with your KitchenAid repairs as this is surely a DIY job. Doug 

Watch the video that walk me step by step with out any problems. 

We took it apart, diagnosed which gears needed replacing and also ordered grease since ours was hardened with age and full of metal filings. We were thrilled we were able to save it and repair it in time to process the buckets of tomatoes coming in from the garden. The attachment we like to use separates seeds and skins from the tomato puree really quickly and easily. We took our time doing this repair. Someone else could probably do it quicker. The mixer works better than ever.