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Kitchenaid ksm50ppwh The motor quits and starts intermittently. Since it is an old mixer, I suspect the brushes need replacing. Does anyone have an original part number for brushes for this model?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: kitchenaid mixer k45ss slow gear

If you look into the brush holder you will see a stopper at the botom ,(this is so when brushes are wore the spring is not driven into armature) .. the brushes have to be inserted so the groove is lined up , try that

Posted on Apr 07, 2008

  • 1 Answer

SOURCE: How do I Open Up a KitchenAid RRK150 Mixer?

you have to take the pin out from right above where you put the beaters on, and then you can tap the circle part off, and get into the inside...

Posted on Aug 10, 2009

  • 130 Answers

SOURCE: trying to replace carbon brushes on Kitchenaid

Check the brushes. They get caked up with burned flour. Remove the brush caps and pull the brushes out by their springs, being VERY careful to note the position of them since they only go back in one way. Measure the free length of the spring before pulling it out. It is critical that you write down the length sticking out with very slight pressure on it so that it is seated against the armature when you measure.

Clean the curved surface of the carbon brushes with a sharp knife being careful not to scratch the curved surface. If you have them installed wrong they will not go all the way in and will not contact the armature and it will not run. Measure the length, as done above, of the spring to make sure it is in correctly!! If it is not in correctly the spring will stick out 1/4 inch longer than it should.

Keep turning the brush until you have the shortest amount of spring sticking out when you press it in all the way then slowly release pressure on the end of the spring. You will know when it is in correctly since the difference in length is noticable. The curvature on the front of the brush must line up with the curved surface of the armature which runs from the front of the mixer to the rear.

Posted on Apr 18, 2010

justinbur167
  • 257 Answers

SOURCE: Which is the better mixer of these old models: K5A

Hello ajlina,

All of these are great home use units, all the attachments are interchangeable between these. The difference between these mixers is the K5 is a 5 quart mixer and the K45 is a 4.5 quart mixer. As I own both of them they are great in the kitchen and have the same durability.

Have any more questions please post to this thread and I will be happy to assist. Thank you for using FixYa.

Posted on Mar 06, 2011

  • 5 Answers

SOURCE: Capacitor value needed for KitchenAid stand mixer 3-C

had the same problem with mine, and couldn't read the values, so took one out of another mixer that was good. the tested value on the good one was around 107 nano farads. run your mixer without the cap for a short time only, to see if the speed problem is corrected. If slow speeds will work, then you know it to be the capacitor. Do not leave out for long period of time, you will burn out contacts and poss. outher components
Ken

Posted on Oct 27, 2011

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1 Answer

Kitchen Air Mixer will not come on


The easiest thing to check is the brushes. Unscrew each black (sometimes white) round cover on either side of the motor housing and see that there is enough carbon brush remaining.

Since the brushes were most likely ok, then I would suspect the solid-state control phase board. These are pretty easy to replace. You can find the service manual for your model on line.

Jul 22, 2014 | KitchenAid Kitchen Aid K45SSWH Classic...

1 Answer

It just quit while I was using on high speed.


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.

Dec 12, 2012 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Kitchenaid mixer motor quit , I dont really see any thing wrong with the brushes.


Obtain a copy of the Repair Part List for your model from Kitchenaid.com.
Download a Copy of the Kitchenaid Service manual.

http://www.kitchenaidparts.be/centers/servicemanual/mixer.pdf

First, you may want to adjust the mixer's speeds:

1. Loosen the lock nuts enough & Turn the 2 top screws clockwise until they cannot be turned
anymore. Leave the bottom screw alone for now.
2. Use a dab of white paint or paper whiteout to mark the positions of the Phillips screws.
3. Plug in your mixer and Set the speed selector to "Stir".
4. Turn each top screw One full turn couterclockwise (alternating between Left and Right)
Keep making one full turn at the time (for both left and right) until the motor starts running.
5. Put your hand near the Agitator shaft and allow it to brush your finger slightly. Use your
watch or clock and start counting the number of times the shaft touches your finger in
60 seconds. The correct count should be 60 RPM (Rounds Per Minute). If it is less
or more than 60, give each screw 1/4 turn counterclockwise or clockwise and start counting
again. Now tighten both lock nuts.
6. Set the speed selector to "6" and turn the bottom screw either clockwise or counterclockwise
to achieve a speed of 180 RPM.

For your reference, the planetary RPM's for the 5-qt. tilt-head Artisan Stand Mixer are as follows:
Stir speed - 60
Speed 2 - 95
Speed 4 - 135
Speed 6 - 180
Speed 8 - 225
Speed 10 - 280

Second, if the mixer won't run:
Remove the Control Plate Assembly (36), the Phase Control Board (39)
and the motor Governor Assembly (35). Inspect for loose connections,
burnt or damaged components. If they seem to look OK, re-assemble
them and test the mixer. If the motor still won't run, then I might suspect
a defective Phase Control Board (39).

Aug 01, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

I have a KitchenAid mixer Model K5SS, Ser #W83808959. The motor stopped running and in checking the brushes, I found they are are both stuck in the brush holders. I suspect this is the reason the motor...


Download a Copy of the Kitchenaid Service manual.

http://www.kitchenaidparts.be/centers/servicemanual/mixer.pdf

You may have to remove the Motor Housing and use a small screwdiver
to completely remove the brushes or all portions of them if they are broken.

Jul 30, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

KitchenAid K5sswh mixer after replacing plastic gear-no power


Hi COVINIO. Yes, the "large black spring loaded magnetic screws on the sides of the mixer" are your mixer's brushes, which supplies electricity to the electric motor. (The black cap is the brush cover). I suspect that one or both of the brushes is (are) not seated properly. Did you remove the brushes to replace them or were you just inspecting them, when you replaced your plastic worm gear?
The brushes need to be installed so that they both seat correctly on the armature's commutator. See the illustration below:
cb20d79.jpg
I'd suggest removing them again and making sure the concave contact face rests completely on the armature’s commutator. If you've turned it 90 degrees too much, it won’t seat properly and you get no power to the motor.
It would also be helpful 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 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. Locate Illus No 47, Brush holder assembly that includes #28, 32, 33, 34 & 46 which is the brush holder insert, and Illus. No. 29, brush & Spring assembly respectively. The illustration along with the picture above regarding the orientation of the brushes should get your mixer powered back up and operational. Good luck! I hope this helps. Howard, Burke, VA
If this solution has been helpful to you, please rate it, thanks! -hslincoln

Jan 29, 2010 | Food Mixers

1 Answer

Do the brushes need to be flat


Hi GWILSON622, from the symptoms you describe I suspect that one or both of the brushes is (are) not seated properly. Did you remove the brushes to replace them or were you just inspecting them? The brushes need to be installed so that they both seat correctly on the armature's commutator. See the illustration below:
0c6a56f.jpg
I'd suggest removing them again and making sure the concave contact face rests completely on the armature's commutator. If you've turned it 90 degrees too much, it wont' seat properly.
It would also be helpful 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 the file, KSM90PSWH0.pdf (354.08 KB) listed under Parts List (16) (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. This illustration along with my initial reply regarding the orientation of the brushes should allow you to reinstall your replacements with confidence.
While your mixer is apart it would be ideal to 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.
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 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

Jan 26, 2010 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

Mixer works on high speed but not low. Brushes


Motor brushes are fairly cheap to buy. It sounds like the first place to start: http://kitchenaidmixerspares.co.uk/Home/tabid/36/ProductID/88/Default.aspx

Jan 11, 2010 | KitchenAid K5SS Heavy Duty Commercial...

1 Answer

Mixer turns sometimes


The smell is the motor overheating and intermittant run is worn brushes in the motor

Jul 04, 2009 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Mixer will not start


The motor slides in from the rear, which in held on by just a couple of screws. I would check the brushed first to be sure they are not worn. They are the two big plastic slotted screws to either side. I have seen them actually melt from the heat as they get worn. You may need to clean the armature with a glass brush when cleaning them.

Nov 28, 2008 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Kitchenaid 350 stand mixer power problems


I'd check the brushes. The big black screws on the side of the motor casing, easily removed, but becareful when you put them back. Here were some instructions from another site that helped me get them back in right:
The brushes in my model KP50PSBU must be insert in a particular manner in order for it to work correctly. If you remove the brushes and shine a flashlight into the hole, you should see a small detent or "stop" in one corner of the hole. Its a square hole. Match this corner with the corner of the brush which is shaved off. The brush is not square; it has one corner shaved or smoothed down. This allows the brush to fully extend into the hole. If the brush is inserted any other way, it will not contact the motor and will not run.

Jun 01, 2008 | KitchenAid KSM50PR Professional Series...

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