Question about KitchenAid K45SS Classic Stand Mixer

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Kitchen aid mixer speed control

The machine is not that old (maybe two years)and hasn't been used a great deal. Recently there was some sparking and I think what happened, one of the two little screws that hold in the generator blades came loose.... I reinserted it and for a while it didn't work at all... perhaps because I had put in the blades wrong- I guess there are 4 X 4 different combinations and only one works... anyway I tried all 16 combinations and it is working but only at very high speed. Wife is really pissed! Any ideas - about the mixer I mean (it may be too late for my marriage!)

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Sound like the link from the speed control to the motor has broken check this and good luck with the wife

Posted on May 17, 2009


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Where do you see the visible sparking?? There are two places in the mixer where this could / should happen. One is at the brushes where they meet the commutator on the armature of the motor. I don't think you can see that place during operation unless you have the rear cover off and know just how and where to look down the tube of the motor head. The second place is at the rear of the machine at the copper contacts on the speed control switch. You can see in the machine during operation at this location. You should not be overly concerned about are seeing constant arcing, then you need a new speed control switch as the resistance (amount of metal to conduct the electric current) between the contacts is worn down. This will cause a constant arc and will eventually wear down and then freeze closed and ...Walla! the mixer will not work any more and it can short out the rest of the electrical in the mixer. So; if you are seeing short intermittent sparks at the rear of the machine , well no worries, if it is constant then replace the speed control switch if it is anywhere else it is an electrical short and that can be very dangerous indeed. Tell us where you are seeing the sparks...and we can FixYa.

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Hi NG345, Merry Christmas and Happy New Year! It sounds like you’ve got the right part to fix your mixer, now you just want to install it correctly. The good news is that your replacement spring can be installed quite easily (OK, maybe a little effort) by yourself, if you are a DITY type person and feel adventurous, and your mixer is not under warranty. Be sure you have the Parts List manual on hand, too. If you're lacking one, you can download a PDF version from the KA website:
Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number, in your case use KSM50P (Your K5SS mixer falls within this manual), and select the first file KSM50P.pdf (438.31 KB) listed under Parts List (4) and then check to verify this matches your mixer model.
Turn to pages 6 & 7, titled “Motor And Control Parts”, which provides an exploded view for the disassembly and reassembly of your mixer’s electrical components, along with all the parts. You’ll want to focus on Illus. Nos. 1, 2, 3, 4, & 5; Pivot screw, Spring washer, Speed control assembly lever, Control plate spring, and Speed Link & Cam, respectively. Your speed control assembly is attached to the bottom of the top part of the mixer’s head (or Illus. No 1, Gearcase Motor Housing, on pgs 4 & 5).
Finally, here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer. The mixers displayed in the links are different KA models, but the principles are the same.
Between these three websites and their excellent pictures and descriptions and your Parts List manual, you should now be able to completely disassemble and reassemble your mixer, should you decide to go that route.
If you feel this repair is beyond your capability, then I would seek out a local small appliance repair shop in your area. KA Customer Care can give you names of local KA authorized repair shops in your area, but you can also do an online search to supplement what KA may provide you. Call to explain your circumstances and find out their hourly rate and get an estimate of what they think it would cost to repair your mixer. Also, always obtain three or more estimates – do some comparison shopping.
Good Luck. I hope this helps. Howard, Burke, VA
If this solution was helpful, please rate it, thanks! – hslincoln

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