Question about KitchenAid KP2671 Professional 6 Series Stand Mixer

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Repairing a kitchenaid 6qt mixer and replaced worm gear. parts list shows a thrust washer needs to be there but it won't fit. after a closer look it appears that I have two back bearings for the worm gear and not a front and a back. everything fits with the two "back" bearings but has something changed because how else did two back gears get in there?

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  • phillfam10 Jan 16, 2009

    I have a similar problem in that my wife's mixer stopped working so I contacted Kitchenaid and it was out of warranty so I took it apart and found what was mentioned elsewhere on this site about the gear housing being plastic and defective and sure enough mine was cracked. So I just received my new metal one but I can't get the shaft to go up into the hole at the top inside the gear housing. Any ideas for that?

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Hi. Go to the whirlpool.com website, for some insane reason they don't list their mixers, enter a search for mixers, then find your model #. Look for a parts catalog. Look at the "exploded" drawings for the transmission area. There you'll notice that there are Front and Rear bearing locations. This drawing also shows the correct place for the "washer". Also, the front and back bearings may look alike, but the're not. Every part needs to be in it's correct place or damage will occur when you start it up, or when you place the machine under load. Let me guess...The original PLASTIC transmission housing broke causing damage to the worm gear assembly. If this is the case, your replacement transmission housing should be made out of metal. If it isn't, call customer service and demand that they send one. The plastic housing has no place in a Premium priced mixer, especially when they advertise that the mixer can handle heavy bread dough. Finally, check the bearing seats, when the worm gear failed it may have also damaged these seats. It happened on my Kitchenaid. Good Luck!
ricardok45

Posted on Dec 31, 2008

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My stand mixer's motor runs but the blades don't turn to mix the food


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

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

The Worm Gear (12) teeth was stripped and needs to be replaced.
The whole Worm Gear Assembly can be purchased on eBay for under
$15.00

Aug 04, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

My Kitchen Aid Pro5 squeals when it's running. I may have overheated it when mixing bread dough. It seems to be running okay. It just makes a very high-pitched noise now. What can I do to fix this?


Get a Copy of the Repair Part List of your model from Kitchenaid.com.
Most likely it is the Worm Gear (17) grinding at low speed the Worm Gear Follower.(19)
You don't have to replace it now, but it is best to open the Transmission Housing and
inspect all the gears conditions. Clear all the grease to expose them. The Bevel
Gear (21) sits right on top of the Worm Gear Follower. (See Repair Part List)
If its teeth look sharp and all metal shiny, then that is the source of your noises.
Eventually, all the teeth will be chewed away and the planetary assembly will stop turning.

Jul 01, 2011 | KitchenAid 450 Watts KM25G0XWH Stand Mixer

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I own KitchenAid RRKP50 350 Watts since late 2004. and it stopped working last night. I searched internet and found that the worm gear is might be the issue. So I opened it and noticed that the tooth on...


I belieive i"ve found what you need at -the gourmet depot.net-click on worm gears on the list on left side of page,parts with pictures and listings will come up.I think you will want the kp50 series 5 parts

Oct 12, 2010 | KitchenAid RRKP50 350 Watts Stand Mixer

1 Answer

The Kitchenaid mixer stops and the motor just whirls without moving the paddle. This happened today when I was making dough. I seemed like the load was too much for it, but I have made this recipe many...


Hi VILLAGEFS, I’m sorry to hear about your 12 year old KA mixer not working. From the symptoms described, your mixer has experienced a catastrophic transmission failure; “like a gear is stripped…” Your particular KA model has a plastic gear designed to fail instead of the whole mixer ‘going up in smoke’. With this ‘fail-safe’ gear stripped your electric motor continues to ‘whirl’, but the power is not being transferred to the planetary and agitator shaft.
The good news is that this can be fixed quite easily (OK, maybe with a little effort) by yourself, if you are a DITY type person, feel adventurous, and your mixer is not under warranty (which it is not). Make sure you 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> then enter the visitor type “Consumer and enter the 6 character model number, in this case K45SSW, and then select the file under Parts List (1) K45SSWH0.pdf (341.41 KB) ( Still check to see it matches your mixer).
Although not providing step by step instructions, the Parts List manual provides an exploded view of the various component assemblies allowing you to see how the mixer all fits together. It is helpful for the disassembly, troubleshooting, and reassembly of your mixer.
Turn to pages 4 & 5, titled “Case, Gearing and Planetary Unit”, and locate Illus. No. 38, Worm Gear Bracket & Gear, including Illus. No. 8, Worm Gear. After clearing all the grease away, you will probably find the worm gear stripped. You can order a replacement part and install it yourself. Do not use the old grease as it will be contaminated with debris from the stripped gear and ‘gum up the works’ if you try to reuse it.
While you’ve got your mixer this far apart you can check for any other unseemly wear and tear on the on the other gears and components. Besides a replacement worm gear, and grease you might consider replacing the gasket, too. You should use a food-grade grease that you can order online (although I’ve seen automotive bearing grease used, too – your call).
As far as parts go, here are five potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com; and Grainger.com (for grease). Prices can vary widely between vendors, so do some comparison shopping.
Finally, here are some links to several excellent websites that detail the disassembling/greasing and 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, fix/replace your stripped worm gear, and reassemble your mixer.
If you feel this repair is beyond your capability, then I would seek out a local small appliance repair shop in your area. KA Customer Care can give you names of local KA authorized repair shops in your area, but you can also do an online search to supplement what KA may provide you. Call to explain your circumstances and find out their hourly rate and get an estimate of what they think it would cost to repair your mixer. Also, always obtain three or more estimates – do some comparison shopping. Good luck, I hope this helps. Howard, Burke, VA
If this solution was helpful, please rate it, thanks! – hslincoln

Jul 19, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Mixer does not rotate hook


Here is the exploded parts list fr a K45, perhaps it will help you replace the stripped gear inside the gear housing. It is probably the gear which is driven by the motor shaft.:

4162897 Worm Gear

It costs around $10 and can be found on the internet at places like:

http://www.amazon.com/KitchenAid-mixer-4162897-worm-gear/dp/B000TR6JEU


http://shared.whirlpoolcorp.com/assets/pdfs/literature/Repair%20Part%20List%20-%208212369.pdf

Apr 08, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

I caught a spoon in my kitchen aid stand mixer. The mixer will not turn, and oil leaked out of the side


It sounds like you have lost some teeth from your worm gear. This usually happens when the mixer has been overloaded. The teeth on the worm gear are designed to fail first to prevent more serious damage. To replace the part you will need to open the head on your mixer. The gears are at the front of the mixer packed in grease. It should be obvious that the worm gear has broken once the head is open. If it is not the worm gear, with the head open it should be easy to spot the problem. The gears are available as spare parts from several places on the internet. search for "kitchenaid worm gear".

When you replace the worm gear, you should be able to see if you need more grease. This will have been the "oil" you saw escaping.

Jan 30, 2010 | KitchenAid Food Mixers

1 Answer

My kitchen aid mixer will not mix....the motor is going but but nothing is moving


Hi AKRAUSSFAN, I hate it when that happens! From the description of your mixer’s symptom your mixer’s had a transmission failure in the primary gear box or the planetary gear assembly (agitator). One of the main gears has failed, hence the loss of power to the agitator, while the electric motor still runs.
The inspection and troubleshooting of the mixer transmission is a DITY capability, particularly if your mixer is out of warranty. Just be sure to have the correct Part List manual around when you start to disassemble your mixer. If you're lacking one, you can download it from the KA website at: (http://www.kitchenaid.com/flash.cmd?/#/page/home).
Click on Customer Care>Locate Manuals& Guides> and enter the 6 character model number, in this case KSM190P, and then select the file under Parts List (61) KSM150PSWH0.pdf (773.44 KB) (definitely check to see if this matches your mixer).
Turn to pages 4 & 5 titled: “Case, Gearing & Planetary Unit”, for the disassembly, troubleshooting, and reassembly of your mixer, along with all the parts. I suspect your culprit gear is Illus. No. 6, Worm Gear, in Illus. No. 27, Worm Gear Bracket and Gear assembly. KA designs this gear to fail on purpose so the rest of the mixer will not self destruct.
Once apart you can check for any other unseemly wear and tear on the other gears, etc. You may find more parts that need replacement than just a bad worm gear. You may also want to consider replacing all the grease, particularly if there are gear particles suspended in it.
Besides needing a replacement worm gear and grease, you might consider replacing the gasket (Illus. No 15), too. I recommend using a food-grade grease that you can order online (although I’ve seen automotive bearing grease used too – your call).
Here are five potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com; and Grainger.com (for grease). You should search for ‘food grade grease’ online (although I’ve seen automotive bearing grease used too – your call). Prices can vary widely between vendors, so do some comparison shopping.
Here are some links to several excellent websites that detail the disassembling/greasing and 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.
If you feel this is beyond your capabilities and will be too difficult to do by yourself you can take your mixer to a local small appliance repair shop and have them troubleshoot and fix your mixer. KA Customer Care can provide you with the name and phone # of the closest authorized KA repair shop in your area or you can do a Online web search, but be sure to get at least three estimates before deciding to commit to one repair shop.
Good luck and have fun. I hope this helps. Howard, Burke, VA
If this solution has helped you, please rate it. hslincoln

Jan 29, 2010 | KitchenAid KSM150PS Artisan Series Stand...

2 Answers

Just replaced the worm gear and cleaned out old grease adding clean new grease. Plugged the machine in and it will not run at all. The machine had been working but not well since I had stripped the worm...


Hi PEGNGEORGE. I can understand your frustration after getting all that work done for the gear and grease replacement just to find that it won’t run. Makes you want to scream. But before screaming, let's see what might be causing problems.
If your machine is not getting power to the motor, and you’re confident that the motor was not damaged by the stripped worm gear, which necessitated the replacement in the first place, then there are a few things that we can look at.
The easiest to check are the motor’s brushes. During your disassembly, did you remove either or both of the motor’s brushes (from the side of the mixer’s head)? If yes, then you need to check their alignment on the armatures’ commutator. The concave contact face should be resting completely on the comutator. If you've turned it 90 degrees too much, it wont' seat properly and you'll get no 'juice' to the electric motor so it won't start.
If the answer is no, and you said the mixer worked, but not well after the worm gear stripped, that would lead me to suspect the problem most likely will be with your speed control assembly.
Since you’ve already replaced the stripped worm gear, I imagine you have your mixer’s Parts List manual on hand, but if you don’t, 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 K45SSW, and select the file listed under Parts List (1), K45SSWH0.pdf (341.41 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. 25, Control Plate Assembly.
First inspect around the control plate assembly to ensure all the wire connections are OK. It's possible a connection has come loose. Unfortunately the whole controller assembly is fabricated on a little PC board which was not meant to be 'home fixed', and my 'expertise' ends there. A local small appliance repair shop should be able to determine if the controller assembly is functioning properly or not, or you can just order replacement parts without the testing.
As far as parts go, here are four potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com. Prices for the same part can vary widely between vendors, so do your comparison shopping.
You may already know about the website links below when you replaced your worm gear, but it’s always good to keep these sites in your ‘toolbox’. 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 and have fun. I hope this helps. Howard, Burke, VA
If this solution has helped you, please rate it, thanks! - hslincoln

Dec 14, 2009 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Remove shaft/gear on KA 6qt Pro


Beth, First you should have the parts manual (Pt No. 8212278 Rev D) in your possession. You can download a PDF file from Kitchenaid, if you don't have it. Once you've have the manual, turn to page 4 - Case, Gearing and Planetary Unit.
I'm also assuming you're able to disassemble the mixer and access Illus. No. 4 - Transmission Housing. You want to remove the cover and place to the side. (Be careful of all the grease inside the cover and on the gears) Next wipe the gears and shaft clear of the grease. You want to get to Illus. No 10, so first you must remove Illus. No. 7 - Retaining Clip using a pair of external clip ring pliers. Next, lift Illus No. 8 - Bevel Gear off the shaft. Next, remove Illus. No 9 - Retaining Pin. That will finally allow you to lift Illus. No 10 - Worm Gear Follower of the shat.
I hope this helps.

Oct 20, 2009 | KitchenAid KP26M1X Stand Mixer

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