Question about KitchenAid KSM5PS Heavy Duty Stand Mixer

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Trying to replace the gear worm on a kitchenaid mixer ksm5ps

Got some do-it-yourself instructions online accompanied by a couple rough pictures but for what seems to be a slightly different model it seems as I cannot get beyond the part where I can get to the compartment that houses the gear assembly. I have remove the main shaft pin but still cannot get to the five screws underneath the orbital piece. Maybe if I could see an exploded diagram of the actual model I have I could get to it but right now I'm stuck. Any advice/help would be great.
Thank you.

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  • Olivier Calas Mar 12, 2009

    Thanks for all the advice...Nice to know others have gone through this ordeal before...(as in: I paid a lot of money for this "state-of-the-art" kitchen appliance, as the ad claims, why do I have to deal with defective parts...) ;-}

  • Lynn Ceteras Huerta
    Lynn Ceteras Huerta Jun 06, 2012

    I found the exploded diagrams for case gearing planetary unit KitchenAid ksm150ps here:http://kitchenaidpartsonline.partsquik.c...

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Hi. Go to the kitchenaid website, search for the parts catalog for your model of mixer. Download the file and use these expolded diagrams to get to the worm gear shaft. You'll have to remove and save the grease when you remove worm gear. This is a messy, but necessary job.

You don't say what caused the worm gear failure in the first place. If you were making a heavy bread dough when it failed, you need to look further than the worm gear.

Once you have removed the top cover of the mixer, look at the now exposed transmission housing at the top front of the mixer. If this is a plastic housing, check it carefully for cracks. If you find cracks anywhere on this housing, you have discovered Kitchenaid's cheap plastic housing. If your warranty has expired, remove this trans. housing. If you've never done this type of work before, I recommend that you take a digital photo at every stage of part removal, as these photos will help you when you re-assemble the mixer.

If you find that the trans. housing has cracks, this is the direct cause of your worm gear failure. You must check for further damage to the worm gear bearings and their seats. Look for cracks and/or pieces broken off of these bearings. Re-assemble in the reverse order using the photos and the drawings to guide you.

Be prepared to wait for a month for your parts to arrive. Insist on a new METAL housing for the under engineered trans. housing. Kitchenaid is now owned by Whirlpool Corp. The product is but a shadow of the way Hobart used to manufacture these mixers. If this solution has assisted you. please rate it. Good luck! ricardok45

Posted on Mar 11, 2009

  • Rick Belanger
    Rick Belanger Mar 24, 2009

    Why do you have to deal with defective parts? The answer to this is swift, brutal and totally legal.



    The manufacturers are concerned with only one thing, making the most money with the least amount of quality (quality costs more money). Long gone are the days when a kitchen appliance would last for 25-30 years. These days many appliances fail soon after the warranty has expired.



    I solved my own Kitchenaid mixer problem by buying a used Hobart mixer and rebuilding it. I no longer have a Kitchenaid problem.



    If you're using your Kitchenaid mixer for your business, you might consider moving up to a commercial Hobart mixer. A properly serviced, used Hobart mixer will perform flawlessly for a lifetime. The Hobart N50 is a 5 qt. mixer with a 3 speed transmission. Try to find one that was built before 1989. The serial numbers hold the key to dating these machines. If you find one, write in to me again and I'll date it for you. ricardok45

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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

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1 Answer

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Hi JO18395. I believe you meant to say the ‘gears’ are stripped... But, to answer your question you will need to go “under the hood” to determine which gear assembly has failed.
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 (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 K45SSW, and then select the file under Parts List (1) K45SSWH0.pdf (341.41 KB) (be sure to check that it 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. 8, Worm Gear, in Illus. No. 38, 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 gears, etc. You may find more parts that need replacement than just a bad gear. You may also want to consider replacing all the grease, particularly if gear debris is suspended in it.
Besides any replacement gear(s) and grease you might consider replacing the gasket (Illus. No. 19) and “O”-ring (Illus. No. 34), too. I recommend using a food-grade grease that you can order online (although I’ve seen automotive bearing grease used too – your call).
It can be messy but quite gratifying to diagnose and repair your mixer yourself.
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

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1 Answer

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1 Answer

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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

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1 Answer

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Hi ROSANDO, Happy New Year! Sorry to hear about your mixer. There is no trick to disassembling your mixer, just a little bit of effort. Here are links to three excellent websites that detail with pictures the disassembly, re-greasing and reassembly of a KA Mixer.
This will allow you to remove the top housing of the bottom of the mixer. Once you get that done, you will want to have the Part List manual around for the rest of the disassembly. 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 K45SSW, and then select the file under Parts List (1) K45SSWH0.pdf (341.41 KB). (Definitely check to see it 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. 8, Worm Gear, in Illus. No. 38, 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 gears, etc. You may find more parts that need replacement than just a bad gear. You may also want to consider replacing all the grease, particularly if there are gear particles suspended in it.
Besides any replacement gear(s) and grease you might consider replacing the gasket (Illus. No. 19) and “O”-ring (Illus. No. 34), too. I recommend using 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. You should search for ‘food grade grease’. Prices can vary widely between vendors, so do your comparison shopping.
It can be messy but quite gratifying to diagnose and repair your mixer yourself.
Between the 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. hslincoln

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1 Answer

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Hi RDROSE29, it appears 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 (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 K45SSW, and then select the file under Parts List (1) K45SSWH0.pdf (341.41 KB) (definitely check to see it this matches your mixer). Turn to pages 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. 8, Worm Gear, in Illus. No. 38, 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 gears, etc. You may find more parts that need replacement than just a bad gear. You may also want to consider replacing all the grease, particularly if there are gear particles suspended in it.
Besides needing a replacement gear and grease, you might consider replacing the gasket, too. I recommend using 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. You should search for ‘food grade grease’. Prices can vary widely between vendors, so do your comparison shopping.
It can be messy but quite gratifying to diagnose and repair your mixer yourself.
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

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1 Answer

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