4K5SSOB0 KitchenAid Mixer - Instructions

I followed the video that was with the worm gear pausing at each step until I completed each step. The only different I did was to replace the grease in the gears and housing of my mixer. I figured with the gear busted, it was going to leave broken teeth in the grease. As I removed the grease I did find a couple of worm gear teeth. Thanks, Parts Select for the parts and video. You save me lots of $$$$.

I how the video for replacing the worm gear on your website. It help me a lot. I followed step by step instruction display on video. It was great help.

Followed directions video on line. good directions.

It took longer to remove from the box, Less than 10 seconds to install, push on shaft and quarter turn, that's it simple, now back to making homemade Marsh mellow covered in chocolate. New whip is sturdy and strong.

The plastic worm gear was stripped,I took it apart first then cleaned out all the old grease so when the new part came it together like a charm.

The issue ended up being this little plastic clip. The repair took me about 20 mins alone to make. However, I realized how dirty the mixer was and spent another 30 - 40 mins detailing it.

Initially I thought this was due to worn motor brushes. I replaced the brushes but it did not fix the problem. Stator tested OK with an ohmmeter so I figured it was the armature part #PS3651001. Ordered that next and that fixed the problem. Spent 25 dollars which beats buying a new one. Next time I'm buying a used one from the 60s or 70s when they made them better! One tip - I had a hard time removing the pin that you need to remove the helical gear. Heating it with a heat gun helped a lot, also helped with replacing it after.

Followed up by your précised video, and print copy's which helped me a lot. That's easy!

took old off and new fit right in saved me over $300.00 for new mixer !

I removed the screws on the back and base of the mixer. Took off the retaining ring and screws holding the mixer beater bar. Tapped out the retaining pin using an allen wrench and hammer. Carefully as not to scratch the unit. Removed the old grease, the screws holding in the worn worm gear. Replaced the gear, re-greased and reassembled the unit. To line up the retaining pin I used a very small allen wrench to get through the hole as it needed to set down all the way. Then when I wiggled it down it lined up the hole for the retaining pin. I tapped the pin back in place with the hammer and a larger allen wrench. Replaced the screws, lightly greased the gears. I had taken the "brushes" out earlier and learned that they go in a certain way. I also learned that the screw at the back by the wires, by adjusting it tighter or looser controls the speed lever. If your mixer won't work on low speed the screw has to be adjusted!

watched instruction video (from Part Select), the demonstration was close enough to enable me to repair the mixer. Newer mixers are disassembled differently.

remove 3 screws ,remove old sanding disc replace with new installl screws

Initially removed carbon brushes then inserted the new carbon brushes. The motor still did not turn on. Then I removed the brushes again, used a flashlight to look in the hole where the carbon brushes are installed. I noticed that there was a square notch on one side of the hole. I then reinstalled the carbon brushes, ensuring that the beveled side of the carbon brush was installed so it lines up with the square notch. This allows the carbon brushes to touch the motor. I turned the unit on and it worked.

I removed the cover off the back of the mixer. Carefully remove the cardboard gasket around the outside edge. Unlock the nuts that hold the two adjusting screws. Count the turns to remove each screw in order to keep the right adjustment. Pull the plate away enough to remove the control board. There is one long and one short wire that gets plugged into each side of the plate. Watch the location of each wire to make the right connection. Reattach the screws to the proper position. Then install the gasket and rear cover. Check for proper operation.

My husband looked at youtube to figure out what the issue was. He saw a video that identified that the likely problem was the worm gear. My husband took the kitchenaid applicance apart, as he saw in the video. We ordered the part, it took less than a week to arrive. He rewatched the video that demonstrated how to put the kitchenaid mixer back together. It's a bit messy due to all the packing grease, but a pair of nitrile gloves, paper towels, and an old rag help. We put a garbage bag over the appliance after it was taken apart to protect it from any dust and my curious cat. We let the kitchenaid cycle for about a minute to make sure the gear was greased. I haven't used it to make bread yet, but I'll do that soon. Thanks for supplying the part that saved us at least one hundred dollars and TRY to get a person who will repair small appliances.