Question about KitchenAid K5SS Heavy Duty Commercial Stand Mixer

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How do you install brushes for the motor? I removed them and cannot remember which direction they go in. I have tried every way but the motor will not run. It ran before I removed the brushes.

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With the head of the mixer upside down. Back end toward you. The right side brush should be with bevel or narrow side up. The left brush should be with bevel or narrow side down.

Posted on Nov 13, 2009

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Posted on Jan 02, 2017

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1 Answer

A200 wiring goes to ground from capacitor


How old is the mixer? Could it have a brush style motor?
Easy to tell. It will have a couple of removable panels on the motor rear cover. The brush mount plate may have moved out of position, which retimes the rotor and stator windings. With the power disconected and the rear main cover removed, look at the internal screws for prevoius marks where the position might have been.

Mar 21, 2014 | Hobart A200 Stand Mixer

Tip

KitchenAid mixer not running or needs new brushes.


If you run your KitchenAid mixer long enough it will need new brushes. Symtoms would be eradic running, runs slow (no additional noise) or a smell of sulfur when running.

If your unit has any of these symtoms you should change the brushes. Brushes are available at http://www.appliancepartspros.com/Appliance-Parts/Kitchen-Aid-Mixer-Parts/index.aspx . They cost $3.55 each and you will need two.

First remove the screws holding in the brushes and remove the brushes.
The brushes have one corner which is shaved off at a 45 degree angle. Make a note of which direction it is facing as this is how the new brushes must be orientated in order to seat properly.

The brushes are located on opposite sides of the main mixer body under a black cover plate with a slot. Remove the cover while holding onto it as it is spring loaded. Remove the brush. Do the other side also.

Remove two screws from the rear of the unit holding the cover between the two halves of the unit (top and bottom). You will need to remove all the screws on the underside of the unit. There should be four total.

Next you will have to remove the power beater driver located at the front of the unit.The shaft located vertically has a pin in it which needs to be driven out with a punch and hammer. Then a "C" clip must be removed from the shaft. Use a "C" clip plier available at any automotive parts store. Place the ends in the holes in the tips of the "C" clip and squeeze. This will release the pressure on the shaft and allow the clip to be removed.

Next pry the bezel off around the exterior of the plate which will expose about 6 screws which need to be taken out. When all the screws are removed you can remove the head assembly as well as the top of the unit exposing the motor armature. The armature will be the blackened, segmented part of the armature directly under the brushes.

At this point you should be able to see how burnt the armature is. Using crocus cloth (available at Lowes or Home Depot) clean the armature until it shines. Do not sand it any more than necessary or sand flat spots in it. A light contact is all that is needed.

Clean the armature with any good electronics parts cleaner, available at Lowes or Home Depot, to get rid of any filings. Clean up any filings or dirt in the unit.

Relubricate The gear box with light grease if necessary. Reassemble the unit and install the new brushes. The brushes will only go in one way and work. If inserted wrong, the unit will not run. The brushes must be seated on the armature.

During the assembly process remember to use Lock Tite on all screws to avoid future problems.

Thanks for using FixYa and for the great rating.

hardrocko

on Dec 01, 2010 | KitchenAid K45SS Classic Stand Mixer

Tip

How to repair a KitchenAid mixer.


If your KichenAid mixer doesn't seem to have the power it once had try the following repair procedure.

More than likely the armature needs to be cleaned if you have made sure that the brushes are OK. The brushes are acceptable if they have 1/4 inch of carbon left. Disassembly of the unit is not that difficult.

First remove the screws holding in the brushes and remove the brushes. Make a note of which direction the 45 degree off set faces or you will have to dissable the entire unit to get the brushes in properly. Remove two screws from the rear of the unit holding the cover between the two halves of the unit (top and bottom). You will need to remove all the screws on the underside of the unit. Approximately 6.

The shaft located vertically has a pin in it which needs to be driven out with a punch/hammer. Then a "C" clip must be removed form the shaft to remove it. If you do not have a "C" clip pliers you can get them at most automotive parts distributors.

Next pry the bezel off around the exterior of the shaft which will expose about 6 screws which need to be taken out. Now you can remove the head assembly as well as the top of the unit exposing the motor armature. When reassembling this drive unit use some Loctite on the threads of the screws to prevent them backing out. This is a common problem with these units.

At this point you should be able to see how burnt the armature is. Using crocus cloth (very fine emery cloth) available at any home improvement store such as Lowes or Home Depot, clean the armature until it shines.

Clean the armature with a solvent to get rid of any filings or debris that was left from the cleaning process and wipe the entire unit clean.

Reassemble the unit and it should be as good as new. Remember to insert the brushes the proper way or the unit will not work. They are keyed.

Thanks for using FixYa and for the great rating.

hardrocko

on Nov 30, 2010 | Food Mixers

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

No power


There are two motor brushes, one on each side of the Motor Housing.
Both must be in contact with the motor coils. If they are too worn out
and/or improperly installed, the motor will not run. Unscrew the black
plastic caps and remove both Brush and Spring Assemblies. Notice
that the brushes are keyed (i.e. one corner is not square) and are
designed to go in the motor housing only one way, in order to make
contact with the motor coils. You can clearly see this if you have the
housing off, whether or not the brushes come in contact with the motor.

Jun 19, 2011 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

We purchased a KitchenAid Plus 275 in 2006. Used it once then packed it for storage since we moved several times. Tried to use it today, will no turn on.


The easiest thing to check is the brushes. There are two large "buttons" on the sides of the mixer. They have a large slot in them. You can use a quarter to stick in the slot and turn the button counterclockwise. Once removed you will see a spring sticking out. Now this is important. On the other end of the spring is a small carbon bar (the brush) which is square and about half an inch long. Note that there is one corner of the carbon bar, the brush, which is removed forming a flat on that corner. Note the position of the flat so that you can replace the brush in the same position. If you don't then the brush will not contact the armature and the unit will never run!

Once removed examine the end of the brush to see if there is some crud on it, most likely charred flour. Carefully scrape the crud off the brush and re-insert it remembering the above . . .make sure it slides easily into position. If it is sticky then remove it again and clean out the brass hole with a q-tip.

Do this to both brushes and the unit will most likely run.

Of course make sure the outlet you are using has power to it!!

If it still doesn't run then there is a problem with the phase control board or the motor.

Mar 28, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

I have an Epicurean KitchenAid Mixer. It does not


The easiest thing to check is the brushes. There are two large "buttons" on the sides of the mixer. They have a large slot in them. You can use a quarter to stick in the slot and turn the button counterclockwise. Once removed you will see a spring sticking out. Now this is important. On the other end of the spring is a small carbon bar (the brush) which is square and about half an inch long. Note that there is one corner of the carbon bar, the brush, which is removed forming a flat on that corner. Note the position of the flat so that you can replace the brush in the same position. If you don't then the brush will not contact the armature and the unit will never run!

Once removed examine the end of the brush to see if there is some crud on it, most likely charred flour. Carefully scrape the crud off the brush and re-insert it remembering the above . . .make sure it slides easily into position. If it is sticky then remove it again and clean out the brass hole with a q-tip.

Do this to both brushes and the unit will most likely run.



Of course make sure the outlet you are using has power to it!!

If it still doesn't run then there is a problem with the motor control board or the motor.

Mar 28, 2010 | KitchenAid KT2651X Epicurean Stand Mixer

1 Answer

Worked fine, then didn't- getting power


The easiest thing to check is the brushes. There are two large "buttons" on the sides of the mixer. They have a large slot in them. You can use a quarter to stick in the slot and turn the button counterclockwise. Once removed you will see a spring sticking out. Now this is important. On the other end of the spring is a small carbon bar (the brush) which is square and about half an inch long. Note that there is one corner of the carbon bar, the brush, which is removed forming a flat on that corner. Note the position of the flat so that you can replace the brush in the same position. If you don't then the brush will not contact the armature and the unit will never run!

Once removed examine the end of the brush to see if there is some crud on it, most likely charred flour. Carefully scrape the crud off the brush and re-insert it remembering the above . . .make sure it slides easily into position. If it is sticky then remove it again and clean out the brass hole with a q-tip.

Do this to both brushes and the unit will most likely run.

Of course make sure the outlet you are using has power to it!

If it still doesn't run then there is a problem with the control board or the motor.

Mar 27, 2010 | Food Mixers

1 Answer

My son thought the big screws on my kitchenaid mixer were menat to be unscrewed. He was surpirsed when a spring and something else popped out. He replaced the parts but now the mixer doesn't work. HELP


Hi, abarhum. I hate it when that happens. Your son must be a future electrician, because what he ‘discovered’ was your mixer’s electric motor’s brushes. It seems that power is not getting to the armature from the brushes so I would suspect that one or both of the brushes is (are) not seated properly. Do you know if he removed them both, or just one?
I'd suggest removing them again and making sure the brushes are facing in the right direction to contact the armature’s commutator. The concave contact face of the brush should be resting completely on the commutator. If your son turned it 90 degrees too much when he put it back together for you, it won’t' seat properly and the motor doesn’t get any juice.
It might be helpful to have your Parts List Manual on hand when you do this. 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 use KSM50P, and select the last file listed under Parts List (4), KSM50PWH2.pdf (354.62 KB). Check to ensure it 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. No. 47 and 29, which is the brush holder and brush & Spring assembly.
Don’t be too hard on your son… I can remember doing something very similar when I was young and became an engineer… J
Good luck, I hope this helps. Howard, Burke, VA\
If this solution has been helpful, please rate it, thanks! - hslincoln

Dec 08, 2009 | KitchenAid KSM5PS Heavy Duty Stand Mixer

1 Answer

No Power to Mixer


If the motor worked prior to removing the brushes you most likely installed the brushes incorrectly. Remove the brushes and using a flash light look in the brush holder on the mixer. You will notice a small tab at the very end. That tab will prevent the brush from coming in contact with the motor armature if installed incorrectly. Clock the brush so that the angled side lines up with the tab and you should be back in business. Also if you are installing the original brushes use the wear marks to determine which side the brush came out of.
The original issue you had is most likely the nylon gear that is talked about in other posts on here.
Good luck

Nov 18, 2007 | KitchenAid 32685 Mixer

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