Question about KitchenAid K5SS Heavy Duty Commercial Stand Mixer

1 Answer

Fails to run

Was not working, checked brushes, they are good, pulled white wire from power & red wire to coil loose, clamped them together, hit the switch, machine functions in all speeds, odd..... plugged everything back together, now it runs fine until..... one side of the governor assy. comes loose, enough that it rubbed away part of the circuit board, is it a defect in the governor causing it to come loose or is it just running too fast? I did notice that bypassed, the machine will still function at all speeds without the circuit board even connected, what is the main purpose of the board?

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  • Crispin Chaparro
    Crispin Chaparro May 06, 2017

    Funny, I had asked this question around 2013 and had long since modified the governor so it wouldn't come loose any more and replaced the circuit board, surprised to see the question come up with the April 20, 2017 date.

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  • KitchenAid Expert
  • 162 Answers

The governor should move back and forth as the speed control goes from speeds 1 through 10. It's purpose is to push on the control plate in order to obtain the different motor speeds.

Posted on Apr 28, 2017

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: KitchenAid K5SS mixer speeds up beyond set speed.

I have the same mixer and I believe your problem is the governor that is on the back of the motor. You can figure it out by downloading the repair manual here:http://store.mendingshed.com/kitaidparts.html The manual has all the info you need; including a troubleshooting section. The governor is availible from the the same site here:http://store.mendingshed.com/kagovernor.html What tipped me off on my K5SS was looking at the governor as it ran and I could see it moving back and forth; not steady like it should. Good luck!

Posted on Aug 19, 2007

SOURCE: KSM103 won't run

I had removed carbon brushes and when tried to start nothing happened kept removing brushes it eventually started

Posted on Mar 22, 2008

  • 1 Answer

SOURCE: Kitchenaid K5A mixer 10 speed only runs on fast, no slow speed

Pull the back off and there will be two screws at the top of the Speed Control Plate and a 3rd screw at the bottom. Tighten the top two screws down. bakerboy49203@yahoo.com. Let me know if it works.

Posted on Mar 21, 2009

  • 1 Answer

SOURCE: My k5ss mixer will not turn on, I checked power

looking from the rear of the mixer, insert the LEFT brush so that the champfer is facing down. Then insert the RIGHT brush so that the chamfer is facing up. that fixed the problem for me.

Posted on Apr 14, 2009

hslincoln
  • 235 Answers

SOURCE: I took off the back cap of a 300 mixer. then

Hi, KIMAMABELL, While working on your mixer 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 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, KSM90P, and select one of the files listed under Parts List (check to see it 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. Locate Illus No 32, Brush holder that includes #18, 20, 21, 22, 23, and 31 which is the brush holder and brush & Spring assembly respectively.
The brushes need to be installed so that they both seat correctly on the armature's commutator and it’s possible when you reinstalled them, one or both brushes were turned incorrectly.
The illustration below shows the correct orientation of the brushes and should allow you to reinstall them with confidence.

0879ff8.jpg

Here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer for your future referennce.

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.
Good luck! I hope this helps. Howard, Burke, VA
If this solution has been helpful to you, please rate it, thanks! - hslincoln

Posted on Apr 30, 2010

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Was working few years but doesn't start at all.It being a month without using it, then trying to turn it on but nothing.No issues before. Watched DIY videos just replaced its Phase board, nothing


You really need to get a Multi meter and follow the power, you have replaced the phase board so we can probably discount it being that.
First check that the switch contacts behind the black control board are really touching when you move the speed control lever to turn the mixer on.
Next the cable, do you have continuity from the wall plug to the control board on phase & neutral, (Check green earth wire as well for the sake of safety) that will be the black wire and the white wire on the 2 lower plug in contacts on the black control board at the back.
Next remove the carbon brushes, do they have reasonable length and most importantly are they fitted correctly with the corner key aligned with the blocker at the bottom of the brush holder.
Next with brushes out check for field winding continuity. On the other side of that black control board to where the power comes in there will be a red wire and a white wire that disappear into the motor housing. One of the wires will have a circuit to one of the brass brush holders and the other wire will have a circuit to the other brush holder. The resistance of both of those circuits should be pretty much identical.
After you have done those tests you should begin to have a clue as to where the problem lies.

Feb 17, 2015 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

KITCHENAID MIXER WON'T TURN ON ?


Remove the brush caps on the sides of the motor housing and check the carbon brushes. If they are worn out replace them. They are keyed and will only fit properly one way so be observant. If that's not the problem remove the back cover and check for broken wires on the black control plate. Make sure the switch on the bottom inside of the control plate is making contact. If still faulty check the cable for continuity to the control plate, cable connects to the black wire and the white wire on lower left of control plate. After that you need to check for continuity of the field coil windings. Only thing left after that would be the phase board pcb just above black speed control plate at the back.

Sep 07, 2014 | KitchenAid K45SSWH model 45SS Classic...

1 Answer

Ksm75wh mixer stopped running


Check carbon brushes under the black caps on the motor sides. They only go in ONE way so take care, there is a blocker in the square hole on one corner. Line it up with the missing brush corner. If it's not the brushes remove the back cover & check for broken wires. Do your checking with power unplugged.

Nov 28, 2013 | KitchenAid KSM75WH WhiteTilt-head Stand...

1 Answer

Hobart k45 won't run


the K45 was introduced in 1962 and ran until 1978 when the K45SS was introduced. You have an open circuit inside, you need to open the machine from the rear and look to the power cord connections. make sure that the wires are connected and none are floating loose. the next step would be to replace the speed control switch. then check your carbon brushes if either one of the brushes are down to the nubs then it would cause a short when you turned it on, if that is the case then be glad that you have breakers and not fuses because you would have fried your motor. the speed control switch has no power attached to it. ifg the problem still exist after checking power cord, speed control plate and brushes then you have a fried armature or stator either can short the system if they have a burned wire inside especially the stator.
let us know how you fare on this after you check out the first easy steps, we can help with the harder fix also.

Mar 23, 2013 | Food Mixers

1 Answer

Has power on but doesn't run


If you took your brushes out to check them then your mixer will not work if you put the brushes back in the wrong way even if you fixed the original problem. the beveled side of the brushes must go back into the brush holders a very specific way/direction because the brush holders have a pinched corner on one edge that allows the brush to slide past and to make contact with the armature. if you are sure that the brushes are in the correct way lets proceed. (If not get a flashlight and look inside the brush holder for the pinched down corner and reinsert the brushes the right way)
fist the basics, I know it seems dumb to even think this but ... well you know.
1. check the outlet you are using for the mixer to see that it has power.
2. The outlet is hot, look at the rar top of the mixer you will see a small "Phillips Head" screw. take it out. and lift up and out at the same time to remove the the rear motor head cover.
3. take a moment and look at what you see. now look at the cord that you use to plug the mixer into the outlet. follow it back into the mixer head and you will see three wires. Green = ground and it is attached to the mixer frame with a #3 Phillips screw, leave it alone. the other two wires, one black and one white attach to what is called the speed control board by means of two flag style connectors. Are they attached? Or have they or either one of them come off?
4. if they are attached to the flag terminals, then get a multi meter and check for power between the terminals. the black test probe goes to the black lead on the mixer terminal, your red test lead goes on the white flag terminal attached to the mixer. personally i would disconnect these two leads before I tested them to avoid any safety issues with the mixer. If ther is no power to the terminals when you p,lug the cord into the wall then the cord is bad. Order one and replace it. you could also test the cord another way by checking for ohms resistance and you won't have to plug the cord in at all. Ohms testing is safer.
5, if the cord is good then the next thing to look at is the phase control board. that is a small computer style board above and behind the big black and copper board with 3 screws in it. It has 4 wires coming out of it. You probably have no real way to test this unless you are familiar with electrical :Bread Board" circuitry. i usually just carry a new one with me and replace it. It's faster.
6. If the system still does not start I remove speed control plate/board,The black and copper one. (there is a spring attached that will have to be removed, if you let it snap back into the machine you will have to dismantle the entire motor head to dig it out, so hook a cloth under it's clip that will hold it and keep it from snapping back into the mixer). Now install a new spped plate and test again. if you still have no power there are only two electric problems left one is the armature and the stator which are the two components that make up the motor, but it will require a complete tear down to replace. I have never had a motor go out. the problem is usually the cord or brushes. Let me know if this helped. If not we can post a location to the service manual and parts list for your mixer.

Sep 13, 2012 | KitchenAid Kitchen Aid W10240708 Cylinder...

1 Answer

Not working at all


Hello Aliceoye,

I understand that you are haveing a problem with you Kitchen Aid Mixer. The reason your mixer is not comming on at all is either the brushed or the speed switch.

First lets check the brushed. On both sides of there are little plastic holders with a slot in them. Remove one at a time, if there is still a black material at the end of the spring then that one is good. Now look up inside the hole and see the little notch stick down make sure that you put the tappered side up toward that and screw the cap back on. Do the same thing to the other side. Now check and see if the unit runs. If it stell does not run lets go the the next possibility.

Now we are going to check the speed switch.
1. Remove the back cover.
2. Take a electrical meter and check the power coming in to the unit the white and black wire, got voltage, unit still not working, unplug and lets proceed.
3. Move the speed switch backwards and forwards and see if the the shaft is moving the plate at the back of the unit that the wires are attached to. Yes, then your speed switch is bad.
4. Put everything back together and order this part PS1957234 the part cost $20.48 and can be purchased from partselect and the following link http://www.partselect.com/PartDetail.aspx?Inventory=1957234&imgID=1&Page=1&SourceCode=UNDEFINED

Thank you for choosing FixYa and we look forward to answer anymore questions you may have. If you have anymore questions please post them to this thread.

Mar 03, 2011 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

I took off the back cap of a 300 mixer. then pulled out the motor brushes. put it back together and now it wont run. What am i missing?


Hi, KIMAMABELL, While working on your mixer 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 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, KSM90P, and select one of the files listed under Parts List (check to see it 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. Locate Illus No 32, Brush holder that includes #18, 20, 21, 22, 23, and 31 which is the brush holder and brush & Spring assembly respectively.
The brushes need to be installed so that they both seat correctly on the armature's commutator and it’s possible when you reinstalled them, one or both brushes were turned incorrectly.
The illustration below shows the correct orientation of the brushes and should allow you to reinstall them with confidence.

0879ff8.jpg

Here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer for your future referennce.
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.
Good luck! I hope this helps. Howard, Burke, VA
If this solution has been helpful to you, please rate it, thanks! - hslincoln

Apr 29, 2010 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

No power after replacing worm gear in Kitchenaid KSM90 Mixer


Remove the rear cap from the unit. Power comes in from the black wire with the white being common. Hold a voltmeter lead on the white and check for power on the black. Power goes across the bottom of the speed control unit via a buss bar. Check for power on the right side, I think it is a red wire (may be a white one). Power is taken into the motor via that wire, goes thru the windings and the brushes and then out the other brush wire and back to the board. Check for power on the return wire. If it is dead then either the windings in the motor are burned out or one of the brushes is dirty and needs to be cleaned and reseated prpperly [note there is one and only one way the brush goes in!!!! Install it incorrectly and the brush will not touch the commutator.

Try that and see if it runs after cleaning the brushes.

Mar 31, 2010 | KitchenAid Food Mixers

2 Answers

Kichenaid Mixer K5SS Electrical Problem - All gears have been removed. Motor shaft turns easily. With speed lever in off position, 0 volts go to motor via red and white wires. With lever in any other speed...


I had this problem also: power to the motor, motor not running.

Solution was simple: remove the 2 stators things from the sides of the main housing, clean all the black dust off them, re-insert and everything works fine.

The dust problem is similar to model train sets that I had as a kid at Christmas, the black dust acts as an insulator, preventing power from travelling between two metal parts that you'd think otherwise would conduct.

Aug 26, 2009 | KitchenAid Food Mixers

1 Answer

KSM103 won't run


I had removed carbon brushes and when tried to start nothing happened kept removing brushes it eventually started

Dec 14, 2007 | KitchenAid KSM103 Professional 5 Series...

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