Question about KitchenAid K45SS Classic Stand Mixer

1 Answer

It just quit while I was using on high speed.

It sounds like I need to replace the plastic worm? With a mixer the age of mine (at least 25 years Old) will the newer metal worm work on this model?

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  • Dian Clark
    Dian Clark Dec 13, 2012

    I appreciate all of the suggestions. I do plan to order the plastic worm. I am very sure that Kitchen aide is a wonderful product. It would not be possible to have an appliance for as long as I have had if it were not. If this does not work, I will have a professional look at it before I buy another mixer. I assure you it will be a Kitchen aide! Thanks again

  • Dian Clark
    Dian Clark Jan 25, 2013

    I ordered and have received the plastic worm and I also got new brushes, however, one of the metal contacts on the brush is lodged inside and I do not know how to get to it and try to remove it. any suggestions?

  • Slo Mover Jan 26, 2013

    Hello Diane, I'm not sure that I understand what you mean by "metal contact is stuck" the bruch is made up of a copper spring attached to the end of a small rectangular piece of carbon, if that is stuck and by pulling on the exposed copper spring will not get the entire piece out, then turn the machine (motor head) on it's side and rotate the planetary to loosen up the brush from the commutator (the part of the motor that the brush rests against during the operation of the mixer)

  • Slo Mover Jan 26, 2013

    If I have misunderstood the problem let me know

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  • KitchenAid Expert
  • 185 Answers

The lady's model is a K45SS and it does not have a Hall Effect Senor, Her machine di not go to high speed, it STOPPED!!, and that is all we know. If the mixer motor still runs or operates then it is a gear problem and yes it would be the nylon worm gear made to fail in order to protect the motor from burning out. if it won't start at all no noise or movement then it is an electrical problem and it could be the speed control switch the brushes the phase control board the govorner or the motor. what is needed is more information from the lady seeking help.

Posted on Dec 29, 2012

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: My Kitchenaid K5SS 300 watt standing mixer launches into the highest speed regardless of the speed ....

I had a similar problem where the mixer would also go to fast speed right away. On the back at the top was a screw that was loose. After tightening this screw I had 4 speeds but no stir speed. I unscrewed that screw and a bolt fell out. This bolt went to threads on the inside of the area covered by that back plate. I put that bolt back on and tightened it and the corresponding one on the other side and wala the mixer works perfectly at all speeds. Hope it helps. Make sure mixer is unplugged before attempting anything like this (wires are exposed when the back plate is removed - some kind of flexible circuit board).

Posted on Dec 29, 2008

  • 16 Answers

SOURCE: mixer speed turned erratic!

I would recommend that you first check the Hall effect sensor which determines the speed.  I had this exact problem and I actually went out and bought another Hall sensor for about $13.  I replaced the original sensor and made sure that the connection between the sensor and control board was nice and snug. My blender worked as good as new! But I was curious to know if my original sensor was defective so I put it back in mixer and again made sure all of the connections were tight.  Guess what?  My original sensor also made my mixer work!  There was nothing wrong with my original Hall effect sensor except the connection between the control board and sensor was not adequate--unfortunately I didn't check the connections before I decided to buy another one. My guess is that the connection between the control board and the sensor probably loosens or comes undone over time from use and vibrations. 
1.  Download the mixer parts and diagrams from the Kitchenaid website to see what the Hall effect sensor looks like. BTW the part number is 9703312. 2.  You'll need a phillips head screwdriver to open up the mixer. 3.  Make sure that the connection between the control board and sensor is absolutely tight and snug. 4.  Also, make sure that the orientation of the sensor connection between the control board and sensor is correct. it's hard to know which way the sensor should be connected because the control board has three prongs and the sensor can attach facing up or facing down. If, after you've made the connections, the mixer still doesn't work.  Disconnect the sensor and reconnect it with the prongs facing the opposite direction and try it.  I actually found the right orientation through trial and error.  By going through this trial and error, I also had my Eureka moment when I realized that the original sensor probably would also work it were reconnected with correct orientation.   5.  This whole process probably takes less than 10-15 minutes to perform.  6.  Make sure you use common sense and unplug the mixer when making connections and such.

Posted on Dec 30, 2008

  • 3 Answers

SOURCE: Mixer turns on revs to a high speed and then quits

I replaced the control board on mine, and that seemed to resolve the issue

Posted on Nov 29, 2008

  • 16 Answers

SOURCE: mixer starts running on selected speed then speeds up & quits

I'm not sure what model of Kitchenaid you have.  I have a professional 6 Quart model, KP26M1XPT. I would recommend that you first check the Hall Effect sensor which determines the mixer’s speed.  I had this exact problem and I actually went out and bought another Hall sensor for about $13.  I replaced the original sensor and made sure that the connection between the sensor and control board was nice and snug. My mixer worked as good as new! But I was curious to know if my original sensor was actually defective, so I put it back in mixer and again made sure all of the connections were tight. Guess what? My original sensor also made my mixer work!  There was nothing wrong with the original Hall Effect sensor except the connection between the control board and sensor was not tight--unfortunately I didn't check the connection before I decided to buy the new sensor. My guess is that the connection between the control board and the sensor probably loosens or comes undone over time from use and vibrations. 
1.  Download the mixer parts and diagrams from the Kitchenaid website to see what the Hall Effect sensor looks like. BTW the part number is 9703312.

2.  You'll need a phillips head screwdriver to open up the mixer gear case cover.
3.  Make sure that the connection between the control board and sensor is absolutely tight and snug.  This is critical!
4.  Also, make sure that the orientation of the sensor is correct.  It's difficult to tell which way the sensor should be connected because the control board has three prongs and the sensor can attach facing up or down. After you've made the connection, run the mixer. If it still doesn't work, disconnect the sensor, reconnect it with the prongs facing the opposite direction and try it again.  I actually found the right sensor orientation through a little trial and error.  But by going through this trial and error, I also had my Eureka moment when I realized that the original sensor probably would also work if it were reconnected with correct orientation.  
5.  This whole process probably takes less than 10-15 minutes to perform.
6.  Finally, use your common sense and make sure to unplug the mixer before checking, connecting or disconnecting anything.

Posted on Mar 21, 2009

ricardok45
  • 135 Answers

SOURCE: kitchenaid K5-A mixer ''growling''

Hi . Chevron FM ALC EP-2 grease is what you need for the lubricant. This has a Mineral Oil base, allowing for it to, at some time, drip into whatever it is that you mix without concern for your health. From what I can, tell this is the only thing that needs to be done. Clean out as much of the old grease as possible.

Goto www.mendingshed.com and download for free a Kitchenaid Service Manual that will cover your mixer.

If this solution has assisted you, please rate it. Good luck! ricardok45

Posted on Mar 25, 2009

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