Question about KitchenAid KP2671 Professional 6 Series Stand Mixer

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The motor is making a grinding noise. The mixer still works, it just sounds weird.

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I have fixed many mixers with the same problem. The only part that consistently wears out
is the Worm Gear Follower located inside the Transmission housing. The teeth are wearing out
and becoming chipped. The grinding noises you hear are made by the Worm Gear and the
Follower. As time goes on, the metal filings from the damaged follower will eventually destroy the Follower and the Planetary will stop rotating.
Sooner or later that gear need to be replaced. Also remember to use new Grease after
a new gear replacement (metal filings from the old gear will damage your new gear)

Posted on Jul 03, 2011

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Posted on Jan 02, 2017

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1 Answer

Grinding sounds


The case screws can come loose and grind on the planetary. To see if that's the problem you need to pop the chrome drip ring off that covers part of the planetary. It's just a push fit, pop off with screwdriver tapped with a hammer.

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My mixer makes a grinding noise when I use it...where do I put oil in the mixer to stop the grinding sound?


The only place that could ever needs oil is the back motor bearing, and unless you are very mechanically inclined it is a major job. You need to remove all of the electrical components and the motor armature to get to this bearing.
It sounds like you may have a bad bearing. It is possible it just needs grease, but here again, this is a job for a mechanically inclined person. This involves removing the mixer head from the base and removing the lower section of the motor housing. If you do decide to do this make sure you have a new gasket and FOOD GRADE grease. These can be purchased on ebay.
I have rebuilt 10 of this style mixer. If you decide to attempt this yourself, let me know and I will give you my contact info. I will try to walk you through it. and I have one similar to yours that I have taken apart so I could send you pictures.

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KA 600 is making a clinking noise when mixing.


Tll,
It sounds like it could be an issue with the gear, the motor housing could have a crack in it. The problem could be much more involved as well. Put the unit on the slowest speed and see if you can stop the mixer from spinning. If it hiccups or stutters, that means you have a stripped gear. If you cannot stop the unit using your hand ON THE SLOWEST speed then there could be a problem with the motor housing or the motor itself not being held in place properly.

Apr 02, 2012 | KitchenAid ProLine 600 Stand Mixer

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The mixer makes noise at stir speed. If I press down on the black contact plate at the rear of the mixer, the grinding goes away. I am not sure if it is the rear motor bearing or something else.


Hi,motor bearing usually worn out if you dont put grease on it.try also to check screws it might loosen up.Bearing might as well not contacted with the upper surface does it makes noise.Screw and bolts might as well loosen .Hope this helps.

Jun 21, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

On low it makes a really loud grinding noise the higher you turn up the speed the slower it becomes.


It sounds like the Worm Gear is going out. The faster the motor runs,
the more damages the Center Gear is grinding away the teeth of the
Worm Gear. Things start to slow down, and eventually they will come
to a halt. It's time to replace the Worm Gear. Also make sure to use
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Jun 19, 2011 | KitchenAid KSM90 Ultra Power Series Stand...

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Motor is making noise and grinding sound - only runs at slow speed, Seeing green light inside the motor area


The green light is probably sparks. Does the light eminate from the rear? If so, it sounds like there is an issue with the control plate. Taking the rear off should hopefully help you spot what is wrong with it. I suspect the board has broken or got stuck.

Jan 30, 2010 | KitchenAid 32685 Mixer

1 Answer

My Kitchen Aid KSM150PS Artisan red mixer trembles alot and makes a grinding sound when I use it. I've exchanged it once already and have the same problem again.


Kitchenaid mixer are supposed to make a slight grinding sound while operating under load. This is simply the gears meshing together while the motor is turning them, but if the sounds gets worse or is already a metal grind type sound this could indicate a broken worm gear inside the unit, and shouldn't be run any longer. However if your mixer isnt on SOLID ground this could cause the tremble as well.Hope this helps

Thanks

Oct 31, 2009 | KitchenAid KSM150PS Artisan Series Stand...

2 Answers

Kitchenaid mixer motor makes loud grinding, squeaking noise.


lgardash, Are you sure it's the motor or could it be the transmission?
It 'sounds' like you've got some transmission gear issues, and a situation similar to my wife's mixer, which we got new in Dec 2006. (Within a week of her first using it, she contacted KA Customer Care and the only 'care' they offered was an explanation that the new KA Pro Mixer gears are all metal and to expect it to be louder than previous models that used a plastic gear (to fail). Well, there's an acceptable level of noise, and an unacceptable level (you don't need to be a mechanical engineer to know when something doesn't sound right) and it seems that my wife's new mixer's operating noise level was always unacceptable. It finally 'died' this past October.) OK I've vented enough on KA... now what might be your problem(s)?
It could be as simple as thorough normal use the gears have shifted slightly in the transmission and the gear teeth are making different contact, hence the grinding/squeaky noise. The higher the speed, the louder, higher pitched sound you'll get. Alas, the noise may also be indicative of a potential gear failure (after our mixers increasing noisiness, the bevel gear broke and the mixer 'froze').
If your mixer is under warranty, contact Kitchenaid. If it's out of warranty, then take it apart and do a diagnostic exam of the gearing. Whatever you find you should be able to fix yourself. Be sure to have the Kitchenaid Part Manual (Part No. 8212278 Rev D) on hand if you attempt to disassemble yourself. It also lists all the parts so that you can determine, which parts, if any have failed. You'd think that the Kitchenaid name would warranty their mixers for a lifetime... So much for quality in America today!
I hope this helps, and good luck! - Howard, Burke, VA

Oct 13, 2009 | KitchenAid KP2671 Professional 6 Series...

1 Answer

Grinding Noise


If it's metallic sound you are loosing teeth on a gear or two.  This is caused by lack of lubricant or simply fatigue of the material of the gears.  Don't use it, you can get metal flakes in your food.

Take it in to a repair shop and have it fixed.  The money spent is well worth it because if done correctly will last another 12 years.

Oct 21, 2007 | KitchenAid KSM90 Ultra Power Series Stand...

2 Answers

Kitcchen Aid mixer making a grinding noise


common problem. Worm gear & bracket #PS734273 about $36.

Oct 21, 2007 | KitchenAid K45SS Classic Stand Mixer

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