I'm replacing the worm gear in our Kitchen Aid mixer, and I am now reassembling the mixer. When I get to the point of puttiing the planetary (the part than spins) back on to the shaft that descends from the gear assembly, the shaft moves upward and won't come dowm enough to put the cotter pin through it. Can you suggest something that would stabilize the shaft and keep it from moving upward?

Your worm gear is no longer seated and that is more than likely because the housing cover is probably the old style plastic and it has cracked which allows the worm gear to jump up during operation and turn out of sync. The worm gear turns the drive gear that works the planetary gears which in turn drives the beater. If the worm gear is not turning true then of course it is pushing the planetary out of true as it turns, which causes the beater to slam the sides of the bowl. The question is this...does the beater hit the bowl in the same place on the bowl every time? Or does the beater hit the bowl in different places every time? If it hits the same place then it is probably just a planetary gear of which there are four gears involved and it could be any one of them. It it hits a different place every time it is most likely the worm gear and cover. In either case parts will cost between 30 and 50 dollars. and it takes about an hour to fix.

Something must be broken if the motor is turning and the planetary is not. It will be one of the following, we will start from the first point of contact with the armature
1) Worm gear broken (fuse gear) you say no teeth broken
2) Worm gear not broken but whole unbroken plastic part not gripping aluminium boss
3) Pin through worm gear broken or missing
4) Pin through centre (or bevel) gear broken or missing
5) Pin through small gear in planetary broken or missing
6) Pin through planetary hub centre shaft broken or missing

The most common ones in order of likelihood are, 1, 2, 3 and 6

The number in your question (9706529) is for the worm gear.
What is the model Kitchenaid mixer you have?

the pro series 600 has a worm gear, a worm follower gear, a bevel gear, and tree bearings the front rear and thrust bearings any of the above will cause the mixer to halt, to operate noisily, or grind, you need to open it up and look under the transmission cover. If it is an older model it could also be the transmission cover if it is a plastic one, My first thoughts is it is the worm follower gear. hope this helps you in the right direction.

It actually can be a couple things1 the worm gear2 the worm follower gear3 the thrust bearing4 the transmission cover5 the bearings on the worm gear front or rear6 the planetary main gear 7 the planetary shaft gear

You will have to open up the mixer and clean each of those to check them out. On the KV25 all are easily do-able just have a large work space and a lot of paper towels. This is a very serviceable machine. let us know what else you need.

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.

Hi DASCO474. This is not good... From the symptoms you describe your mixer’s Agitator shaft is dropping from the Planetary assembly. Something has caused the retaining clip and pin to break so allowing the agitator shaft to drop.
Fortunately the inspection and troubleshooting of the inside of your mixer is a DITY capability, particularly if your mixer is out of warranty. Just be sure to 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> Enter the 6 character model number, in your case: KP26M1, and select one of the first two files listed under Parts List (47) (The first file, KP26M1XAZ4.pdf (304.18 KB), is for a -4 series model and the second file, KP26M1XAZ5.pdf (724.41 KB) is for a -5 series with slightly different insides, so make sure you have the correct Parts List manual.)
Turn to pages 4 & 5 entitled “Case, Gearing And Planetary Unit” for the disassembly and reassembly of your mixer, along with all the parts. Locate Illus. No. 28, Planetary Assembly and Illus. No. 34, Agitator Shaft. The parts which hold the Agitator Shaft within the Planetary are Illus. Nos. 9, Retaining Pin and 30, Retaining Clip. I suspect these parts have failed and will need to be replaced. Now the real fun begins!

To get to the Agitator Shaft gear you’ll need the following tools: a regular or Phillips screw driver, retaining clip pliers, and a small drift pin punch and a small hammer. After removing the Gearcase Motor Housing (mixer top) you will need to remove the Transmission Housing (Illus No. 4) and remove all the lubricating grease from the transmission housing and gears. This will allow you to remove Illus No. 7, 8, 9 & 10, Retaining Clip, Bevel Gear, Retaining Pin and Worm Gear Follower, respectively.
Once you remove the Retaining Pin (Illus. No. 9) the Planetary Assembly can be tapped down through the Lower Gearcase Assembly (Illus. No 11). With the Planetary removed, you should find all the parts which slide on the Agitator Shaft (Illus. Nos. 30, 31, 32, & 33) and pieces of the retaining pin, which should be loose in the base of the Planetary.
Besides ordering a new retaining pin and clip, you might want to reorder the Transmission Cover Gasket (Illus No. 6), too. You’ll also need to replace the grease you removed with new grease. Do not try to reuse any original grease as it may have ‘debris’ in it. You should use a food-grade grease that you can order online (although I’ve seen automotive bearing grease used too – your call).
With your mixer apart and the grease removed from the gears you can check for any other unseemly wear and tear on the gears, too.
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/reassembly of a KA Mixer. The mixers displayed in the links are different KA models, but the principles are the same.

• http://www.artisanbreadbaking.com/discussions/kitchen-aid.htm
• http://www.neilcrockett.com/mixer.htm
• http://www.foodonthefood.com/food_on_the_food/2009/04/how-to-repair-a-kitchenaid-mixer-yourself.html

Between these three websites and their excellent pictures and descriptions and your Parts List manual, you should now be able to completely disassemble, determine what’s wrong, order the correct parts and reassemble your mixer.
Good luck. I hope this helps. Howard, Burke, VA
If this solution has helped you, please rate it, thanks! - hslincoln

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.

• http://www.artisanbreadbaking.com/discussions/kitchen-aid.htm
• http://www.neilcrockett.com/mixer.htm
• http://www.foodonthefood.com/food_on_the_food/2009/04/how-to-repair-a-kitchenaid-mixer-yourself.html

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

Hi REDLACQUER. Sorry to hear about the metal shavings. This is probably not to best way to take iron in your diet... My first thought would be to ask if your mixer is still under warranty. If you’ve had the machine less than one year, then I’d let KA replace your mixer with a new one. However, I suspect like many who seek assistance from FIXYA.com, your mixer is out of warranty, so what can you do?
Have you been able to find exactly where the metal shavings are originating? From the symptoms you describe, it appears that the planetary/agitator shaft assembly may be rubbing against its housing and generating the metal shavings at higher speeds. Have you noticed any increased noise levels/squeaking/screeching when the planetary rotates? It’s also possible that the planetary is out of alignment and not rotating true. Could the agitator shaft been jarred or hit hard during set up or moving in or out of you storage cabinet? Or the shavings could be symptomatic of other internal gear problems, but that would be the least likely scenario as the mixers internal gears are pretty much self-contained.
The good news is that this can be troubleshot and fixed quite easily (OK, maybe with a little effort) by yourself if you are a DITY type person, and feel adventurous. However, before you start to disassemble your mixer, be 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> Enter the 6 character model number, in your case, KP2671, and select the last file, KP2671XWH3.pdf (325.07 KB) listed under Parts List (24) (check to verify that it matches your mixer model).
Turn to pages 4 & 5, titled “Case, Gearing and Planetary Unit”, which provides and exploded view for the disassembly and reassembly of your mixer, along with all the parts. I suspect your Planetary Assembly, Illus No. 15, is rubbing somewhere against its housing, Lower Gearcase, Illus. No. 24.
To gain access to these pieces you’ll need the following tools: a regular or Phillips screw driver, retaining clip pliers, and a small drift pin punch and a small hammer. You need to remove the Transmission Housing (Illus No. 7) and remove all the lubricating grease from the transmission housing and gears (when removing the grease be on the lookout for shavings in the grease which would indicate excessive gear wear). This will allow you to remove Illus No. 25, 21, 18 & 19, Retaining Clip, Bevel Gear, Retaining Pin and Worm Gear Follower, respectively.
Once you remove the Retaining Pin (Illus. No. 18) the Planetary Assembly can be tapped down through the Lower Gearcase Assembly (Illus. No 24). With the Planetary removed, you can inspect it and the inside of the Lower Gearcase to determine where the shavings originated. Be sure to look closely at the Planetary Gear in the lower gearcase as well as the Agitator Shaft Pinion Gear (Illus. No. 12). That will also identify what parts need to be replaced, which you can order online.
You’ll need to replace the grease you removed with new grease. You should use a food-grade grease that you can order online (although I’ve seen automotive bearing grease used too – your call). Do not try to reuse any original grease as it may have ‘debris’ in it.
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’. 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.
Finally, here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer. The mixers displayed in the links are different KA models, but the principles are the same.

• http://www.artisanbreadbaking.com/discussions/kitchen-aid.htm
• http://www.neilcrockett.com/mixer.htm
• http://www.foodonthefood.com/food_on_the_food/2009/04/how-to-repair-a-kitchenaid-mixer-yourself.html

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.
I hope this helps. Howard, Burke, VA
If this solution was helpful, please rate it, thanks! – hslincoln

Hi DELUNAY. The only way to tell if your speed control assembly is bad it to remove it and test it a local repair shop, but I think from the symptoms you describe, you’ve already answered your own question and your speed control assembly is shot. The fact that your motor is not making any noise indicates to me that it’s not getting power. That can only be caused by two things; a bad speed control board or a burned out electric motor. When you shredded your nylon worm gear, did the motor exude a ‘bad/burnt’ smell (other than possibly ozone)? If not, then I would look at replacing your speed control board/assembly.
Since you know you’ve got to replace the worm gear, you might as well replace the speed control assembly. 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 your case use KSM50P and then select the first files under Parts List (definitely check to see if it matches your mixer. If it doesn’t, continue to look at other manuals until you find the correct manual that does match.)
Turn to pages titled ‘Case, Gearing & Planetary Unit, for the disassembly, troubleshooting, and reassembly of your mixer, along with all the parts. This is where you’ll find your
Besides your shredded worm gear, 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 gear. You should also consider replacing 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. Oh and don’t forget to replace the speed control board and associated components, tool
Here are some links to several excellent websites that detail the disassembling/greasing and reassembly of a KA Mixer.

• http://www.artisanbreadbaking.com/discussions/kitchen-aid.htm
• http://www.neilcrockett.com/mixer.htm
• http://www.foodonthefood.com/food_on_the_food/2009/04/how-to-repair-a-kitchenaid-mixer-yourself.html

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. hslincoln