Question about KitchenAid KSM50PR Professional Series Stand Mixer

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The housing above where the moter turns is comming apart

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Hi. Remove the silver band from around the mixer head, there should be 4 screws that hold the cover on. Tighten them and install the silver band again. If his solution assisted you, please rate it. Good luck! ricardok45

Posted on Mar 06, 2009


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Model kv25g8xmc5 mixer. Can the brushes be replaced on this motor? Seems like this will require taking the motor apart and it won't budge despite removal of the 2 long housing screws.

if the brushes can be replaced there will be a black plug in the housing above each brush
use a flat bladed screw driver to undo those plugs
if no plugs , take it to an appliance shop and see how it is done

May 10, 2017 | Food Mixers

1 Answer

Housing unit

That is usually caused by a stripped gear. It is hard to give you a good idea of what to check without a model number.
If it is a 4.5-5 quart regular mixer then it will most likely be a bad worm gear: This would be a fairly easy repair. You will also want to check the other gears to make sure they are not damaged.
However if it is a 5 or 6 quart Professional mixer it will be more involved than that. You will want to take the mixer apart, inspect each gear (you will need to clean off the grease). Any gears that are worn damaged or nicked will need to be replaced. Also check the bearings, and the retainer pin. If these are bent or damaged they may need to be replaced. While you are in the mixer check to see if the transmission housing is cracked, if it is replace it with the new metal housing. If all of the above are in good shape check your planetary assembly, it is pressed together and could become loose causing the same issue.
Please let me know if you have any questions.

Apr 22, 2013 | KitchenAid Food Mixers

1 Answer

Mixer is making a kind of grinding or metal noise when turned on. Any ideas on what this might be?

One or more of the gears in the gear housing is stripped. Here is the parts list for the machine. Take it apart and find the stripped gear and replace it.

Mar 13, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Trying to fix my KA mixer, and cannot get the planetary housing o

A screwdriver is for turning screws. What you need is a drift pin slightly smaller than the diameter if the pin you are trying to remove. If you can back the shaft up with something heavy like a hammer head and then try to drive the pin out you will be successful. They are pressed in with a light press fit and should yield to the above technique.

Mar 07, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

My mixer triggers the circuit breaker when turned on. Is is possible to open the motor housing to see if something has entered it? I made sausage with it yesterday. Is there a reset button?

Yes, you can open it up and repair it yourself. Go to this website and look on the upper center of the page where you will see KitchenAid Repair Manual. You can download the file and view how to take the unit apart and repair any defective part. I suspect you have a short so check the power cord before taking the mixer apart. Try plugging it into another outlet to be sure the problem is actually the mixer.

Dec 16, 2009 | KitchenAid KP2671 Professional 6 Series...

1 Answer

My mixer made a grinding noise, so i oiled it

I am assuming that when you oiled it you merely squirted oil in various places without actually taking the mixer apart. You probably did a good thing corrects the grinding noise...but...oil is not only an excellent lubricant it is also a very good insulator and if you got oil into the switch area where it turns on then you may have got oil inside and it can be insulating the place where electrical contact is made. For a possible quickie solution you might try to use something to eliminate the oil that may have got into the switch. Best thing is probably to go to Radio Shack and buy their contact cleaner spray can and use it on the switch. That stuff is real expensive though. A cheaper solution might be to use isopropol alcohol if you have some handy or even spray carburetor cleaner as both of them will completely dry quickly. Be sure to unplug the unit before doing this and allow it to completely dry before plugging back in. You can do all of this without taking anything apart. If it then runs ok then I suspect the grinding noise is still there as the gears inside probably need a little grease. If you want to go that trouble you can remove screws and open the case up...carefully...and put a dab of auto wheel bearing grease on your finger and rub it into the area where the gear teeth are. Do not use a big gob of it ... just a little amount is all needed. If you do not have any grease handy you can use vasline if you have some in the house. If the mixer did not turn on after the above dousing of alcohol etc. from the outside then you may need to do the cleaning directly on it from if you do take the mixer apart spray the cleaner directly inside the switch. When you take the mixer apart do not remove the shaft/motor/armature or other parts...remove only the cover and enough to do the repair. The possible problem is that if you take it apart too much it will be difficult to get back together particularly if you remove the armature and contact area of the commutator where the carbon brushes are. While inside there though look at the copper commutator area where the tiny carbon brushes make electrical contact. They may be pitted or not allowing the brushes to make good connection. To correct this you can spray contact cleaner directly onto the contact area to clean it. Let it dry and reassemble and the mixer should run ok. If the mixer is very old and been used a lot then the contact area of the commutator may be worn so badly that it does not make good contact with the brushes or the brushes may be worn down so much that they no longer make good contact. In that case you would need to actually remove the armature assembly...what I told you not to do above if you are not too good at reassembling things. Once the armature is removed it is easy to take some fine grit sandpaper and clean the copper commutator making it clean and bright copper color like new again. Also if the carbon brushes are almost totally worn down you probably can find some new ones that will fit ok by taking the old ones to your local hardware store as many of them stock carbon brushes nowadays. If you do all this and are able to reassemble the mixer then it should be just about as good as new again. Hopefully you do not need to go to all the trouble of the major disassembly though. Good luck.

Aug 22, 2009 | Food Mixers

1 Answer

Re kitchen aid mixer . I was making bread dough with the lock on. Just when i was going to shut it off I hurt a click and then the paddles stopped turning. The motor runs but with a funny nose but it will...

Hi. Don't try to use the mixer anymore, and don't take the planetary off as the problem isn't there. If your mixer is still under warranty, call Kitchenaid, they are good at responding to mixer failure if it's under warranty.

If you're out of warranty remove the single screw to take off the silver band near the top of the mixer. The screw is at the back of the mixer. Next, remove the 4 screws that hold on the top cover. Remove the top cover and locate the transmission housing (it will be a black/gray plastic humpy looking thing) near the front of the machine. Look for cracks in this housing. you can do this without taking it off. If It's cracked, you have found the first problem, and it's a problem that many Kitchenaid owners, including me have had. This plastic transmission housing has no business being in a machine that you paid top dollar for. Their replacement housing is now made out of metal.

A word of warning, and customer service won't tell you this. As managment at Whirlpool Corp. told me. Even if my mixer was out of warranty. they may have repaired it for free, if only I had not taken it apart. So if you've found a cracked Trans. housing, put the cover back on, put the silver band back on and call Kitchenaid customer service. Tell them about your problem. Don't tell them that you took the cover off. They will tell you that because you are out of warranty, all they can do is refer you to one of their authorized repair centers.

If you take it to the repair center, ask for a quote, they will look at it and see the cracked trans. housing, then they will take the housing off and find that the worm gear has been destroyed and possibly the shaft bearings too, they may also find that the bearing seats have been damaged (as in my case). They will tell you about the damage and give you a quote about how much it will take to fix it. Then is the time to contact Customer Service again and demand to speak with a supervisor and tell him/her about the cheap plastic housing and the damage IT caused. Tell them that you want to be reimbursed for the damage caused by this flimsy part. They will argue with you. Ask to speak with management.
If they refuse, contact me at and I may be of further help to you.

If you have found this solution helpfull, please rate it. Good luck!...You're going to need it ricardok45

Jan 09, 2009 | Food Mixers

1 Answer

KSM5PS won't turn under load

Hi. Remove the top cover and look for the plastic transmission housing, it's toward the front of the machine. Look for cracks in this housing. If the housing is cracked, remove it and look for further damage to the worm gear assembly and the bearings and bearing seats that support them. You'll have to remove some of the grease to inspect the parts. If you're lucky, only the trans. housing will need replacement. If, like me, you're not so lucky, you may have to replace the housing, wormgear assembly, bearings and re-work the bearing seats so that the new bearings fit properly. Although Kitchenaid advertises that their mixers can easily handle bread dough, the truth is...They can't. This scenario happened to me and I had to replace all of the above. Be prepared to wait a month or more before your parts arrive. Specify that you want the METAL trans. housing. I'm still waiting (6 wks.), for a single bearing. If this solution works for you, please rate my solution. Good Luck! ricardok45

Nov 14, 2008 | KitchenAid KSM5PS Heavy Duty Stand Mixer

1 Answer

Sunbeam hand mixer. One beater not working

That spring does not turn the beaters. It is part of the beater release assembly. Probably one of the gears is worn.

Nov 12, 2006 | Sunbeam 2485 MixMaster Series Hand Mixer

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