8KP2670 Whirlpool Mixer - Instructions

Unplugged unit. Took top housing off of mixer (half dozen small screws). Disconnected speed control circuit card from five wiring connections. Removed card from mixer chassis (two screws). When new part came (the next day) I reversed the procedure in about 5 minutes and had a working mixer! Thanks.

Removed 4 screws on mixer top. Removed 4 screws to gear box cover. Ordered replacement gears from Parts Select. Removed snap ring. Repaced two gears. Applied gear grease, replaced snap ring & screws. Gears at local appliance dealer were $39 each. Total parts from Parts Select + shipping under $20, received in 3 days!

removed cover annd snap ring removed gear and replaced with new,

This is the tightening screw that holds the attachments into the motor unit of the mixer. Found your web site and reordered 2 replacement pieces (in case one breaks!). Very EZ and user friendly. Thank you!

This was easy once Igot all the parts. The mxer wouldn't mix and when I opened it up the drive gear between the motor and the planetary drive was missing some teeth. Turns out the bearing, which was sintered bronze, had broken so I needed a new gear, new bearing, and the jumping gear had broken the housing so I needed a new housing. The new gearing ( really a bushing since there are no rollers or balls in the "bearing") waws now steel and the molded plastic housing is now cast metal. Some new grease ( I had to buy a quart can of grease to get two tablespooons) a new gasket and put the screws in and we're back in business. Total repair time 10 minutes, total time to get all the parts 3 weeks,

Watched several videos on repair. Noted part placement while disassembling. Found problem, ordered and received parts. Cleaned out all old grease. Greased all parts and reassembled per recommendations, paying attention to the bearing race and washer placement. Firmly tensioned all fasteners, cleaned up and tested.

Remove top of mixer and remove gear housing. Remove old grease and clean gears. Place new grease and install new housing. Replace top of mixer.

Removed top cover of mixer which was very easy. Then marked the 4 wires so they could be plugged back to new switch correctly. Removed 2 attaching screws to remove switch and one squeeze connector. Installed new switch after plugging on 4 wires. Snapped squeeze connector in place. Reinstalled top cover.

3d time in 20 years, but the mixer itself is built like they did 20 yrs ago PartSelect had the part in my mail box in *20 hours* from online order!
See https://www.ereplacementparts.com/kitchenaid-4kp26m1xmc4-professional-stand-mixer-parts-c-114958_114959_115101.html for instructions.
BUT - they changed the design so a power switch previously separate from (to the left of) the circuit board is now a microswitch integrated on the board, leaving you with ONE LESS WIRE.
Attached is the fix diagram & directions for the new design.

Opened the gear housing and removed all gears. Cleaned out all grease. Biggest issue was getting the retaining ring; very tight. Gears were difficult to pull easily. In replacing gears they did not sit easily and took a little rubber hammer to re position worm and upper gear. Be sure to have the right grease for food devices and don’t under grease. And have patience of which I have a short supply.

I followed the instructional video closely. My old circuit board was labeled and laid out slightly differently than the new one, so in addition to labeling the wires with "color" or "motor" label from the old board, I also made sure to label with more identifiers that were included on both boards such as "P1" or "P2". Once I labeled the wires with all the information, removal of the old board and installation of the new board was straightforward. This isn't the first repair I've made on my KitchenAid but it was by far the simplest.

Removed screws holding top, then removed the switch retaining screws. Removed and replaced switch wires and re assembled cover.

Replaced the worm gears. Original were ground down as if they were not seated correctly. Ordered the parts and swapped them out. I do not own a retaining clip removal tool. This was the most difficult, trying to open the clip using 2 needle nose pliers. It made the repair time longer.

Skewer the screw in with my fingers,

Took the mixer apart many times. Grease all over the place. put new gears in still noisy. The worm gear must have been cut wrong. The noise still there. The part select sent out a new worm gear. I did not put it in yet. I put the old worm gear in and the noise stopped even though it shows wear. Have not decided whether I will put it in yet.I would also like to add that the people that I talked to at the this site were very very helpful and great just great---------