Question about KitchenAid KSM90 Ultra Power Series Stand Mixer

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How to replace the speed switch on a kitchen mixer model #KSM90

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  • KitchenAid Master
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Posted on Mar 08, 2019

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6ya6ya

6ya staff

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SOURCE:

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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: Oster Kitchen Center won't hold a steady speed

My wifes Oster Kitchen Center slowed down and I think finally stopped. I say I think it did because I took it apart two years ago and am finally finding the time to get it back together. I cleaned it, checked the brushes on the motor(all of this is in the base unit with the control buttons on it. The upper blender/beater arm has no electrics in it.) The brushes were coated with some kind of dried crusty stuff which was keeping them from contacting the motor.I put it back together and tried it but it only hummed and did not move.
I took it apart again, this time everything came out. Motor, electric wiring plus the metal gearbox attached to the motor which drives the blender and the upper arm. I took the transmission apart (it's attached to the motor in the base unit) and found the gears in it were so gummed up with who knows what. Probably everything that leaked out of the blender.
You see, what happens is that the seal between the blender black base and the glass jar started to leak after a few years but we don't notice it. Maybe we did but we cleaned it and we thought it was all good. But the liquid can leak down into the bottom unit around the drive teeth and that little square drive that the blender locks onto. And then it goes into the gearbox and the motor. So it is a major job to clean it. Since I don't have a manual for disassembling the lower base unit, I'm just putting it back together. I cleaned all the gunk out, put some grease on the gears and the gearbox is working better but I fear not perfect. It is 30 years old!! So unless you take it apart yourself or find an appliance repair shop (is there such a place anymore?) it might not be worth the effort. But it is do-able. How long have you got?

Posted on Jan 03, 2009

Anonymous

  • 16 Answers

SOURCE: kitchenaid mixer speed

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 defective, so I put it back in mixer and again made sure all of the connections were snug and tight. Guess what?  My original sensor also made my mixer work!  There was nothing wrong with the original Hall Effect sensor except that the connection between the control board and sensor was not tight--unfortunately I didn't check the connection before I decided to buy another 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. To fix your problem:
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.
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 about 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

hslincoln

Howard Lincoln

  • 235 Answers

SOURCE: i have a kitchen aid stand mixer KG25HOXWH.

Hi ZPAORUSKI. I suspect your switch problem has to do with the speed control assembly inside your mixer’s head, and yes you can order and replace it.
The inspection and troubleshooting of the inside of your mixer is a DITY capability, particularly if your mixer is out of warranty. Just be sure to have the Parts List manual on hand. If you're lacking one, you can download a PDF version from the KA website: http://www.kitchenaid.com/flash.cmd?/#/page/home. Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number, in your case: KG25H0 (use zero and not ‘O’), and select one of the last two files listed under Parts List (9) (check to ensure this matches your mixer model. KA made a -4 series and a -5 series with slightly different insides, so make sure you have the correct Parts List manual.) For a series -4 mixer, turn to pgs. 2 & 3, titled Case, Gearing And Planetary Unit that shows an exploded view for the disassembly and reassembly of your mixer, along with all the parts. Locate Illus. No. 8, Control Assembly. This is where I suspect your problem lies. (For a series -5 mixer, turn to Pgs 4 & 5, and locate Illus. No. 18, which is the speed control assembly).
First inspect around the controller assembly to ensure that all the wire connections are OK. It's possible a connection has come loose. Unfortunately the whole controller assembly is fabricated on a little PC board filled with resistors, capacitors and other electronic parts, which was not meant to be 'home fixed'. My 'expertise' ends at being able to recognize a resistor from a capacitor, but I don't get much deeper than that. A local small appliance repair shop should be able to determine if the controller assembly is functioning properly or not.
As far as parts go, here are four potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com. Prices for the same part can vary widely between vendors, so do your comparison shopping.
Once apart you can check for any other unseemly wear and tear on the gears, etc. It can be messy but quite gratifying to diagnose and repair your mixer yourself.
If you feel troubleshooting and repairing 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 has helped you, please rate it, thanks! - hslincoln

Posted on Dec 03, 2009

hslincoln

Howard Lincoln

  • 235 Answers

SOURCE: Kitchen aid mixer drops metal shavings in the

Hi REDLACQUER. Sorry to hear about the metal shavings. This is probably not to best way to take iron in your diet... My first thought would be to ask if your mixer is still under warranty. If you’ve had the machine less than one year, then I’d let KA replace your mixer with a new one. However, I suspect like many who seek assistance from FIXYA.com, your mixer is out of warranty, so what can you do?
Have you been able to find exactly where the metal shavings are originating? From the symptoms you describe, it appears that the planetary/agitator shaft assembly may be rubbing against its housing and generating the metal shavings at higher speeds. Have you noticed any increased noise levels/squeaking/screeching when the planetary rotates? It’s also possible that the planetary is out of alignment and not rotating true. Could the agitator shaft been jarred or hit hard during set up or moving in or out of you storage cabinet? Or the shavings could be symptomatic of other internal gear problems, but that would be the least likely scenario as the mixers internal gears are pretty much self-contained.
The good news is that this can be troubleshot and fixed quite easily (OK, maybe with a little effort) by yourself if you are a DITY type person, and feel adventurous. However, before you start to disassemble your mixer, be 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> Enter the 6 character model number, in your case, KP2671, and select the last file, KP2671XWH3.pdf (325.07 KB) listed under Parts List (24) (check to verify that it matches your mixer model).
Turn to pages 4 & 5, titled “Case, Gearing and Planetary Unit”, which provides and exploded view for the disassembly and reassembly of your mixer, along with all the parts. I suspect your Planetary Assembly, Illus No. 15, is rubbing somewhere against its housing, Lower Gearcase, Illus. No. 24.
To gain access to these pieces you’ll need the following tools: a regular or Phillips screw driver, retaining clip pliers, and a small drift pin punch and a small hammer. You need to remove the Transmission Housing (Illus No. 7) and remove all the lubricating grease from the transmission housing and gears (when removing the grease be on the lookout for shavings in the grease which would indicate excessive gear wear). This will allow you to remove Illus No. 25, 21, 18 & 19, Retaining Clip, Bevel Gear, Retaining Pin and Worm Gear Follower, respectively.
Once you remove the Retaining Pin (Illus. No. 18) the Planetary Assembly can be tapped down through the Lower Gearcase Assembly (Illus. No 24). With the Planetary removed, you can inspect it and the inside of the Lower Gearcase to determine where the shavings originated. Be sure to look closely at the Planetary Gear in the lower gearcase as well as the Agitator Shaft Pinion Gear (Illus. No. 12). That will also identify what parts need to be replaced, which you can order online.
You’ll need to replace the grease you removed with new grease. You should use a food-grade grease that you can order online (although I’ve seen automotive bearing grease used too – your call). Do not try to reuse any original grease as it may have ‘debris’ in it.
Here are five potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com; and Grainger.com (for grease). You should search for ‘food grade grease’. Prices can vary widely between vendors, so do your comparison shopping.
It can be messy but quite gratifying to diagnose and repair your mixer yourself.
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.
I hope this helps. Howard, Burke, VA
If this solution was helpful, please rate it, thanks! – hslincoln

Posted on Jan 12, 2010

duceolsen

  • 56 Answers

SOURCE: Kitchen Aid Manual for RRK90 mixer I need one

http://forum.kitchenaid.com/forums/pdfs/u_c_classic4.5_5qtmodels.pdf

old model k5ss
http://downloads.mendingshed.com/KitchenAid_Service_Manual.pdf

Posted on Mar 16, 2010

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1 Answer

The speed lever on my KSM 90 won't lock in the off position.


Do you have a manual? You can download one from Kitchen Aid, small appliances. There should be a schematic and how to that will help.

Dec 16, 2012 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

No power to my kitchen aid mixer


please i need help kitchen aid mixer i have no power

Jun 27, 2012 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

MY kitchen Aide mixer was running alittle rough /loud and now has stop completely. It is approx 24 years old and has never had any problems. It is hard to find a local repair [place. any suggestions


Two things you can do for a 24-year old machine:

1. Replace both motor brushes (Black large plastic Caps on each side
of the Moto Housing). Without these, the motor wouldn't even run.
2. Replace the Worm Gear (the cause of the Rough Loud noises)

Download a copy of the Repair Part List from Kitchenaid.com for
your model KSM90.

Also don't forget to tighten all the screws inside the mixers and use
fresh Kitchenaid Grade Food Grease for all the gears.

Jun 21, 2011 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

I have lost about 20ml oil from my Kitchen Aid KSM90 mixer. Is it necessary for me to replace it? Is it possible for me to replace it? What sort of oil?


I would suggest that you replace the oil, but first find out the reason for the leak. There must be a cover on a gearbox that can be removed to put oil in as I doubt that there will be and actual filler point on the machine.

Jan 16, 2011 | KitchenAid KSM90 Ultra Power Series Stand...

2 Answers

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.)
Be 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.
Turn 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 it.
As 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.
Finally, here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer.
Between 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
If this solution was helpful, please rate it, thanks! – hslincoln

Jul 12, 2009 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

Spare beater


http://www.marbeck.com/mixers_kitchenaid_parts.html

heres link for replacement parts

my recommendations i would go with new parts but some will like to do the work them selves

Jun 04, 2008 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

Kitchen aid KSM90


If you can unplug the mixer and test resistance between leads of the selector switch. The resistance should vary from high to low as you move the selector from low to high. If cord and all else looks good and switch is bad replace the switch.

Mar 23, 2008 | KitchenAid KSM90 Ultra Power Series Stand...

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