“Pro” Series Clean and Re-grease parts

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“Pro” Series Clean and Re-grease parts

This applies to all “Professional” and UK “Pro Line” bowl-lift mixers (“Professional 5 HD”, “Professional 5 Plus”, “Professional 6”, and “Professional 600” in the US, “Pro Line” and “Artisan” in the UK) and the Accolade 400. The series model numbers for these machines begin with KG25, KV25, KB26, KD26, KP26, KL26, and KN15. (This list is inclusive but not comprehensive. KitchenAid has a lot of different model numbers for what is essentially the same mixer inside.)

If you are going to DIY this job, you will need the following items:

  • Gear housing gasket: part #WP9709511 (see important note below)
  • Motor shaft seal: part #WP9706247
  • Grease (“food safe”, NSF H-1 rated, NLGI #2 viscosity, see below)
  • Snap ring pliers (not required, but will make the job much easier)

If you are repairing a failed worm follower gear, or if the mixer is an older machine and you are overhauling it for the first time:

  • Worm follower gear, part #W11086780

For grease I like the Super Lube 41160 (one 14oz can is enough for more than three mixers); you can buy it on Amazon. Valid alternatives are Mobil FM222, Phillips P66 Food Machinery Grease, CRC SL35600, and CRC SL35610.

Important note about the gear housing: before beginning the job, unplug the mixer and remove the top cover; inspect the transmission housing at the front of the mixer. If it is plastic, you need to replace it with the upgraded metal housing. The metal housing kit (which includes a gasket) is part #8212396.

Gear Housing Replacement

If you are replacing a plastic gear housing, check the sleeve bearings on either end of the main gear shaft. If there are signs of cracking or deformation, replace both bearings, as well as the thrust bearing. The part numbers for these are WPW10170080, WPW10170081, and WP9703445 respectively.

Check the Bowl Column Screws

If this is the first time the mixer is being serviced and it is a bowl-lift model, remove the motor and check the three large screws beneath. They are probably loose. Remove each screw, apply some Loctite 242 or Vibra-Tite 121, and tighten each screw firmly using a #3 Phillips-head screwdriver. 1/4″ external-tooth lock washers are a good addition. You can also replace the screws with 1/4-20 x 3/4″ socket-head cap screws, which use an Allen key drive. This allows you to tighten each screw more firmly, but take care not to overtighten the screws which will strip the threads.

Parts sources:

Updated: 4/23/2025