Question about KitchenAid K5SS Heavy Duty Commercial Stand Mixer

2 Answers

I jammed my mixer and pretty sure I snapped the nylon worm gear.

My son has already taken off the trim band and the 4 screws that hold the motor housing and lower gear case to the column! We cannot get any part of it apart to get at the gear. Does the part where you insert the beaters come apart? We are not a dummies, but for the life of us, we are not able to get at the nylon worm gear that we think is broken.! We have looked at the schematic and can see the part we probably need but can't get at it. We have cracked the motor housing trying! Regards, Teri Henry

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  • Alsgamma May 14, 2010

    Still cannot figure it out from the experts advise



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  1. Wrap the mixer's wall plug in a plastic baggie and secure it with a rubber band. This is a safety measure to ensure that no grease gets on the plug.
  2. Step 2 Remove the drip cup. The drip cup is the silver ring that encircles the planetary housing. Use a small flat screwdriver on the top lip of the drip cup to loosen and remove it.
  3. Step 3 Lay the mixer on its side. It is a good idea to put a towel or cloth underneath the mixer.
  4. Step 4 Remove the groove pin that holds the planetary gear assembly to the center shaft. Use a 5/32-inch punch to do this. Removing the groove pin allows the planetary assembly cover to be removed.
  5. Step 5 Pry the planetary gear cover down and off the shaft using two flat screwdrivers.
  6. Step 6 Unscrew and remove the five screws on the perimeter of the gear assembly using a Phillips screw driver. These screws hold the internal gear assembly to the gear case.
  7. Step 7 Unscrew and remove the four large screws that secure the base to the top portion of the mixer. Use a large Philips screwdriver.
  8. Step 8 Remove the five screws flat head screws on the bottom cover of the gear/motor assembly to release it from the top portion of the gear case/motor housing.
  9. Step 9 Remove the attachment hub bevel gear from the gear case and motor housing. This can be done by pulling it out of the attachment hub.
  10. Step 10 Examine the attachment hub bevel gear. If the teeth are worn, the gear should be replaced.
  11. Step 11 Clean out the gear case. Remove any and all old grease from the gear case. Pack the gear case with six ounces of new grease before reassembling the mixer.
  12. Step 12 Replace the attachment hub bevel gear. First coat it with a thin film of oil. Then, push it into the attachment hub bearing from inside the gear case. It does not have a washer, so push it in as far as it can go.
  13. Step 13 Remove the three Phillips head screws and lock washers from the worm gear assembly that secure it to the detached gear case bottom cover.
  14. Step 14 Lift out the worm gear assembly.
  15. Step 15 Check the worm gear, the shaft and pinion. The shaft and pinion has 11 teeth on the K45SS; on all other models, it has 10 teeth.
  16. Step 16 Drive out the groove pin with a punch. This allows the gears to be replaced.
  17. Step 17 Reassemble the worm gear, shaft and pinion of the gear assembly, being sure to replace the fiber washers where they originally were located.
  18. Step 18 Place the worm gear assembly and bearing bracket on the gear case bottom cover, making sure the two dowels fit into base of the bearing bracket. Securely tighten the three screws that hold the bearing bracket.
  19. Step 19 Clean the gasket cover of the gear case. Replace the gasket cover by securing it over the dowel and pressing the gasket down.
  20. Step 20 Reattach the top and bottom mixer sections, being careful to line up the shaft in the upper gear housing. Do not force the pieces together; they should assemble easily.
  21. Step 21 Remove the back cover of the mixer to expose the motor. The motor has myriad parts, brushes and steps to disassembly and repair. Simply do not attempt this without the service manual unless you have the knowledge of an electrician.

Posted on May 14, 2010

  • Alsgamma May 14, 2010

    THANK YOU!!! We will try this over the weekend!


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yes, the part where the beaters is being inserted can come apart. Maybe its difficulf for your to remove because its the first time is being removed.

Take a very close look at it and study very well. The part is clipped together and you will be needing a flat screw driver to peirce through the part. You need to apply some for but not too much in other to get it off.

Take your time and be calm, you will definitely remove the part successfully.

Take care.

Posted on May 13, 2010

  • Alsgamma May 13, 2010

    So I am looking at the schematic, what is clipped and what are we piercing to get to the worm gear bracket and gear. (illus. # 27)

  • Alsgamma May 14, 2010

    So I am looking at the schematic, what is clipped and what are we piercing to get to the worm gear bracket and gear. (illus. # 27)



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