Question about KitchenAid KV25G0X Stand Mixer
SOURCE: mixer speed turned erratic!
I would recommend that you first check the Hall effect sensor which determines the speed. I had this exact problem and I actually went out and bought another Hall sensor for about $13. I replaced the original sensor and made sure that the connection between the sensor and control board was nice and snug. My blender worked as good as new! But I was curious to know if my original sensor was defective so I put it back in mixer and again made sure all of the connections were tight. Guess what? My original sensor also made my mixer work! There was nothing wrong with my original Hall effect sensor except the connection between the control board and sensor was not adequate--unfortunately I didn't check the connections before I decided to buy another one. My guess is that the connection between the control board and the sensor probably loosens or comes undone over time from use and vibrations.
1. Download the mixer parts and diagrams from the Kitchenaid website to see what the Hall effect sensor looks like. BTW the part number is 9703312. 2. You'll need a phillips head screwdriver to open up the mixer. 3. Make sure that the connection between the control board and sensor is absolutely tight and snug. 4. Also, make sure that the orientation of the sensor connection between the control board and sensor is correct. it's hard to know which way the sensor should be connected because the control board has three prongs and the sensor can attach facing up or facing down. If, after you've made the connections, the mixer still doesn't work. Disconnect the sensor and reconnect it with the prongs facing the opposite direction and try it. I actually found the right orientation through trial and error. By going through this trial and error, I also had my Eureka moment when I realized that the original sensor probably would also work it were reconnected with correct orientation. 5. This whole process probably takes less than 10-15 minutes to perform. 6. Make sure you use common sense and unplug the mixer when making connections and such.
Posted on Dec 30, 2008
Check the motor brushes. You'll see two black plugs with flathead screwdrivera small one, Unscrew to check, if only springs or very worn,youll,know.Its a maintenance problem.
Posted on Mar 11, 2009
Maeveda, Congratulations on your 30 year old KA mixer! Was it a wedding present? Do you still have the K45SS Parts List? If not, you can download a PDF version from the KA website. Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number (in your case, use K45SSW select Parts List (1) and then check to see it this matches your mixer). You can check on page 4 & 5 for the disassembly and reassembly of your mixer, along with all the parts. It will be messy but gratifying. Once apart you can check for any other unseemly wear and tear on the gears, etc.
As far as parts go, here are four potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com (this vendor the best prices for my wife mixer's parts, but sadly they had to back order them, which was disappointing to SWMBO). Prices for the same part vary widely between vendors, so do your comparison shopping. Here's a link to a site that details the disassembly and replacement of a mixer's grease, which might be helpful, too. http://www.foodonthefood.com/food_on_the_food/2009/04/how-to-repair-a-kitchenaid-mixer-yourself.html
Good luck and have fun. I hope this helps. Howard, Burke, VA
Posted on Nov 04, 2009
Yes this indeed does sound like you have a problem. There could be a couple different cause of this noise. If your main drive or worm gear has been damaged, it is likely to not run at all or jam up. So i think this is not the problem. There is however a codder pin located inside the transmission gears this can be seen by removing the upper housing of the unit, and then exposing the oil and gears. clear away the oil surrounding the gears, and save this grease for later. After this you should be able to visually see this codder pin AND the gears, rotate the gears while inspecting them and the pin. If the pin is slightly bent or broken this will make the grinding noise that your are talking about, while still operating and driving the unit. part number for the codder pin is 9705444. If however the noise is coming from the motor area this could indicate a worn or faulty motor bearing. This can cause the motor to operate on an angle and can cause a rubbing noise from the cooling fan or the winding of the motor itself rubbing on the mixer housing. Part number for the braket and bearing is 3180526. both are relatively cheap and easy to replace. If you find and fix the problem be sure to inspect or change the oil as this can often have metal chunks and other particles. Hope this Helps
Posted on Nov 06, 2009
It sounds like the worm gear has failed. This usually happens when the mixer is overloaded. You will need to take the head apart and check the gears.
Posted on Jan 26, 2010
Hi BCPSBT. You say your mixer growls at slow speed. It could be that it’s time for an oil (lubrication)
change. KA packs your mixer’s
transmission with enough grease to ‘last a lifetime’, but depending on the age
(in this case a middle-age appliance) and usage (you don’t indicate) of your
mixer the grease breaks down into its constituent parts: oil and additives. Over time, the additives will thicken and provide
less lubrication to the transmission gears and this is probably what is
If you are DITY type person, feel adventurous, and your mixer is not under warranty you can troubleshoot it yourself. Be sure you have the Parts List manual on hand. If you are 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 select “Consumer” for User Type, then enter the 6 character Model Number, in your case use K45SSW select Parts List (1) and then check to see it this matches your mixer model.
Turn to pages 4 & 5 for the disassembly and reassembly of your mixer, along with all the parts. For starters, you should consider reordering the gasket (Illus. No 19) and O-ring (Illus. No 34). With the mixer apart and transmission exposed, you should be able to confirm how well the lubrication grease is distributed and doing its job. Also, once apart you can check for any other unseemly wear and tear on the gears, including the planetary and agitator shaft gears.
When you re-grease the gears and assemblies, 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 online 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/reassembly of a KA Mixer.
Good luck and have fun. I hope this helps. Howard, Burke, VA
If this solution was helpful, please rate it, thanks! – hslincoln
Posted on May 06, 2010
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