Question about KitchenAid K45SS Classic Stand Mixer

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Question regarding KitchAid mixer, Model K45ss. The vertical mixer shaft has play in the gearbox, it makes worn gear noises at all speeds. I adjusted the speed control to manual specs, the speed control works properly. There is also a noise at higher speeds, a whirring noise. I haven't disassembled it yet, asking for advice : Parts availablity, proper repair of unit, it's 30 years old.

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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

Thanks

Posted on Nov 06, 2009

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It just quit while I was using on high speed.


The lady's model is a K45SS and it does not have a Hall Effect Senor, Her machine di not go to high speed, it STOPPED!!, and that is all we know. If the mixer motor still runs or operates then it is a gear problem and yes it would be the nylon worm gear made to fail in order to protect the motor from burning out. if it won't start at all no noise or movement then it is an electrical problem and it could be the speed control switch the brushes the phase control board the govorner or the motor. what is needed is more information from the lady seeking help.

Dec 12, 2012 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Mixer doesn't work on all speeds


First the K45SS does not have a hall effect sensor. the pro series the epicurean seines and the pro series 5 use them, The K45ss system uses a phase control board a speed control plate and a governor for speed control. the governor rarely goes out the phase control board is a likely culprit but the system would work only in high gear if it was bad. I agree with the guest above in that it sounds like the retaining nuts on the adjusting screws of the speed control board have worked themselves loose and the adjustment screws themselves have vibrated out of proper position.

Sep 20, 2012 | KitchenAid K45SS Classic Stand Mixer

1 Answer

The mixer goes real fast on all the settings. Whats wrong?


The K45SS is very similar to the 5-qt. tilt-head Artisan Stand Mixer.
You need to adjust the mixer speeds. Obtain a copy of the K45SS Repair Part List from Kitchenaid.com. Remove the screw holding the End Cover and locate the three screws from the Control Plate. All three (2 top left and right, and 1 bottom) must
be adjusted. 1. Loosen the lock nuts enough & Turn the 2 top screws clockwise until they cannot be turned anymore. Leave the bottom screw alone for now.
2. Use a dab of white paint or paper whiteout to mark the positions of the Phillips screws.
3. Plug in your mixer and Set the speed selector to "Stir".
4. Turn each top screw One full turn couterclockwise (alternating between Left and Right)
Keep making one full turn at the time (for both left and right) until the motor starts running.
5. Put your hand near the Agitator shaft and allow it to brush your finger slightly. Use your
watch or clock and start counting the number of times the shaft touches your finger in
60 seconds. The correct count should be 60 RPM (Rounds Per Minute). If it is less
or more than 60, give each screw 1/4 turn counterclockwise or clockwise and start counting
again. Now tighten both lock nuts.
6. Set the speed selector to "6" and turn the bottom screw either clockwise or counterclockwise
to achieve a speed of 180 RPM.

For your reference, the planetary RPM's for the 5-qt. tilt-head Artisan Stand Mixer are as follows:
Stir speed - 60
Speed 2 - 95
Speed 4 - 135
Speed 6 - 180
Speed 8 - 225
Speed 10 - 280


Jul 14, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Speeds don't increase after 6


The K45SS is very similar to the 5-qt. tilt-head Artisan Stand Mixer.
You need to adjust the mixer speeds. Obtain a copy of the K45SS Repair Part List from Kitchenaid.com. Remove the screw holding the End Cover and locate the three screws from the Control Plate. All three (2 top left and right, and 1 bottom) must all be adjusted. 1. Loosen the lock nuts enough & Turn the 2 top screws clockwise until they cannot be turned
anymore. Leave the bottom screw alone for now.
2. Use a dab of white paint or paper whiteout to mark the positions of the Phillips screws.
3. Plug in your mixer and Set the speed selector to "Stir".
4. Turn each top screw One full turn couterclockwise (alternating between Left and Right)
Keep making one full turn at the time (for both left and right) until the motor starts running.
5. Put your hand near the Agitator shaft and allow it to brush your finger slightly. Use your
watch or clock and start counting the number of times the shaft touches your finger in
60 seconds. The correct count should be 60 RPM (Rounds Per Minute). If it is less
or more than 60, give each screw 1/4 turn counterclockwise or clockwise and start counting
again. Now tighten both lock nuts.
6. Set the speed selector to "6" and turn the bottom screw either clockwise or counterclockwise
to achieve a speed of 180 RPM.

For your reference, the planetary RPM's for the 5-qt. tilt-head Artisan Stand Mixer are as follows:
Stir speed - 60
Speed 2 - 95
Speed 4 - 135
Speed 6 - 180
Speed 8 - 225
Speed 10 - 280


Jul 03, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

My K45SS started making a VERY loud noise when in use, and the lowest and highest gears don't work. Machine is about 20 yrs old.


This sometimes happens when the two nuts holding the motor in place become loose. To check, open up the back and move the foam around the edge to see the two nuts. Tighten them if they are loose. If the low speed still does not work, the screw adjustment at the bottom of the control plate may need adjustment.

Jan 25, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Question regarding KitchAid mixer, Model K45ss. excessive noise.


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

Nov 02, 2009 | KitchenAid K45SS Classic Stand Mixer

2 Answers

The speed control doesn't work well


This problem could be due to a worn or broken speed governor. this part is located on the motor shaft of the unit and works by way of centrifugal force. This however when gone will usually make the mixers speed go up and down, not just one speed. The most likely cause of this problem is the main control board. if this has become faulty, it can make the mixer stop completely or in your case, run full speed when turn on. part number for the board is W10119326. this part can easily be changed by disconnecting all power and removing the back end cover. Once removed make note of the adjustment screws at the bottom of the board. As these are your motor speed adjustment screws, and can be very finely tuned. Once these and the spring has been removed. you can now replace the board. Hope this helps

Thanks

Nov 01, 2009 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Kitchenaid artisan mixer does not turn the blade at low speeds


If it is the worm gear then the planetary will stop turning when there is a load on the paddle but the motor will continue to run at the speed you set it at. I'd be checking the carbon brushes, checking that the field assembly has not loosened up a bit and then I would see if the speed control plate adjustment screws are loose. I'd then reset the speed and see if it stays as it should be.

Sep 24, 2017 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Kitchenaid 250 watts k4ss mixer


The repair manual says that the mixer can make this grinding sound at slow speed, like stir or 2. This is normal, especially until it warms up. This is the sound of the gears turning at slow speed.

Dec 13, 2007 | KitchenAid K45SS Classic Stand Mixer

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