Kitchenaid mixer k45ss slow gear stopped working. Took out brushes and now when replace brushes mixer won't work at all

Check the carbon brushes under the black side screw caps. Be aware that the brushes only fit ONE way, they are keyed on one corner. Check for broken wires under the back cover on the speed control plate.

You need to either re-time the speed control switch at the back or replace it. If it worked great before then it is just an adjustment to get it back to running correctly. YouTube viseo available for timing the switch

Hiya,

I am sorry to hear you are having problems with your KitchenAid mixer. It may just be that your motor brushes are worn down or have not been put in correctly. I have added links below for our help videos on replacing the motor brushes and have also added a link if you wish to purchase a new set:

6778011 KABrushSet KitchenAid Mixer Motor Brush Set (2 x W10380496 brushes) https://secure.kaparts.co.uk/sku/6778011
https://www.kaparts.co.uk/Help/KitchenAidHelp/KitchenAidMixerHelp/KitchenAidMotorBrushReplacement/tabid/597/Default.aspx

https://www.youtube.com/watch?v=5YuS3atXR0M

I hope this helps you solve the issue :)

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.

Hello Tony,

I have located the brushes for your K45 mixer, the Repair clinic has them in stock for $4.38 each, the Item # 1549909, and you may use the link below:
http://www.repairclinic.com/Kitchenaid-Motor-Parts?z=100&gclid=CKSD5NriuKcCFUVqKgodIE2b_g

You will also want to pay attention to the side of the brushed that are angled as they only go in one way. You will have to look inside the brush hole and make sure you put the angle to the same side as the angle on the inside of the hole and everything should work just fine.

Thank you for using FixYa to find your solution.

Your motor needs to be replaced. The speed setting should be able to be set from the start, and if it will not slow down or change speeds, the motor has been over-heated and will need to be replaced. The only quick fix for this is to bypass the speed setting, and change the brushes on the motor. If you do not know how to do this, ask a serviceman to change the brushes only. Brushes usually run about $30 to repair. Although, you will only have one speed.

the carbon brush was burned

What everyone is forgetting or they just don't know is that...The K45 introduced by Hobart in 1962 and was replaced in 1978 by the K45SS are two completely different machines. With completely different wiring systems. The K45 is wired together with wire nuts and the K45SS used connectors on the Speed control switch. All of the websites posted above are for the K45SS (Stands for Solid State) The manual for he K45SS is easy to get from Kitchenaid as the mixer electronics did not change from it's introduction in 1978 to 1986 when Hobart sold the Kitchenaid division to Whirlpool. The K45 on the other hand is a product and property of Hobart NOT Whirlpool or the Kitchenaid division of Whirlpool. The K45 Manual ... well I just can't find one! They way wires are routed is totally different in the K45 from the K45SS so the diagram in the K45SS manual does not help. Also the brushes in the K45 were square not camphor-ed like they are in the K45SS so there is no right or wrong way to insert the brushes in a K45. Whereas; in the K45SS there are four ways to insert the brushes in their holder and three of them are wrong. The K45SS brushes go into a completely different brush holder than the K45. The K45SS is the same today in 2012 as it was in 1978. The K45 is the same only from 1962 when Hobart introduced it to 1978 when it was replaced with the new Solid State model. prior to 1962 it was the K4-A model and it was different entirely. So if the people asking for help say their mixer is a K45 we should be asking for clarification as to a K45 or a K45SS.

No fuse inside. Sounds like the phase board has failed.

The brushes 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.