KitchenAid KSM90 Ultra Power Series Stand Mixer - Page 2 - Answered Questions & Fixed issues
Runs but doesn't turn. Worm gear is not broken.
Something must be broken if the motor is turning and the planetary is not. It will be one of the following, we will start from the first point of contact with the armature
1) Worm gear broken (fuse gear) you say no teeth broken
2) Worm gear not broken but whole unbroken plastic part not gripping aluminium boss
3) Pin through worm gear broken or missing
4) Pin through centre (or bevel) gear broken or missing
5) Pin through small gear in planetary broken or missing
6) Pin through planetary hub centre shaft broken or missing
The most common ones in order of likelihood are, 1, 2, 3 and 6
on Dec 29, 2014
The speed switch on our KitchenAid KSM90 won't shut off
Hi NORMR123, it sounds like
your Switch Lever has loosened up and you just need to get to the attaching
screw to tighten everything up. (I trust
you reinstalled the motor brushes correctly so your mixer will run. Many folks attempt repairs by removing the
brushes thinking it will provide access to the inside, then reinstall them
incorrectly and wonder why their mixer doesn’t work.)
sure you have the Parts List manual on hand.
If you're lacking one, you can download a PDF version from the KA
website at: http://www.kitchenaid.com/flash.cmd?/#/page/home.
Click on Customer
Care>Locate Manuals & Guides> then enter the visitor type “Consumer” and the 6 character model
number, in your case use KSM90P, in the Model Number box. Select one the files listed for your model that
appears under Parts List (16): KSM90PSWH0.pdf (354.08 KB) and
save that file to your PC (check to see if this matches your mixer model).
Although not providing step by step instructions,
the Parts List manual provides an exploded view of the various component
assemblies allowing you to see how the mixer all fits together. It is helpful for the disassembly,
troubleshooting, and reassembly of your mixer.
to pages 6 & 7, titled “Motor And Control Parts”, and locate Ill. Nos. 1,
2, 3, & 4. #1 is your Pivot Screw,
which may have loosened over time. #3 is
your Switch Lever and stud. Check the detent is present or rubbed down. If that’s the case, you may want to replace
far as parts go, here are five potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com; and Grainger.com (for grease). Prices can vary
widely between vendors, so do some comparison shopping.
here are some links to several excellent websites that detail the
disassembling/reassembly of a KA Mixer.
these three websites and their excellent pictures and descriptions and your
Parts List manual, you should now be able to completely disassemble, inspect/adjust/replace
your Switch Lever, and reassemble your mixer. Good luck, I hope this helps.
Howard, Burke, VA
this solution was helpful, please rate it, thanks! – hslincoln
on Dec 09, 2014
Need manual and part number for brushes on a Kitchenaid RRK90
Well first thing; here is the link to the KitchenAid site where your parts list can be found.
Next, the parts list will tell you what the part number is for the brushes and all the parts that make up the brush assembly. If you need to replace any part other than the brushes you will need to do a full tear down to do that. Also; remember that there are four different ways to replace the brushes but only one way will work. You need to be very careful to remember which way the old brushes come out, there is a beveled edge on one side of the brushes and the new brushes need to go back the exact same way or they will not reach the commutator on the armature and the mixer will not work until the brushes make that contact with the armature.
Lastly the reason that your mixer gets out of time is that over time, 8-10 years of use, the nuts on the speed control switch that hold the three timing screws in place simply get loose due to vibration and the screws can rotate in or out. Some times the screws vibrate loose and the mixer just will not turn on next time the mixer is used. Peeps then think it's broke and will not work so they sell it for parts and by a new mixer. When the only thing they need to fix it is a Phillips screwdriver , a small 3/8th open box wrench and about 20 minutes time to fix it.
Anyway I hope that this helped to answer your question. Please let us know if it helped and if not let me know and I'll try to help fixya.
on Sep 03, 2014
Won't turn on
Check for broken wire under back cover, check carbon brushed under black screw covers on sides. The brushes are keyed and only work one way.
on Jan 11, 2014
I don't have one here in front of me but the wire colours are all written on the speed control plate, have a good look at the plate near the terminals.
on Dec 25, 2013
Mixer speed surge?
Remove the power and undo the brush caps on the side of the motor and check the brushes. They only go in one way, one corner is chamfered off and must be lined up with the little blocking lug inside the bottom of the brush holder. You may need a torch to look in there. I'm not so sure that this will be the solution but well worth a look.
on Nov 29, 2013
My machine gradually lost power. Hubby began
The switch on the inner side of the black speed control board may have become bent with your repair efforts and the contacts may no longer be touching. One part of the switch contacts is lifted and lowered by the speed link that you put back to its correct position.
on Nov 24, 2013
Regreased kitchenaide mixer now won't turn on
Did you remove the carbon brushes. If so they go back in any of four ways. But only one way works correctly. If you did not remove the brushes then you need to set the speed timing on the speed control switch at the rear of the machine and you can find a YouTube video on this exact exercise on YouTube of course. You may have also reattached the wires to the speed control switch to the wrong connectors hence no work.
on Oct 16, 2013
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