Question about KitchenAid KSM5PS Heavy Duty Stand Mixer

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When moving the mixer tiped over in the trunk and oil leaked out. It is making a grinding sound at times when mixing thicker things. I need to know what kind of oil to use and where to put it. Thank you. Kathryn Price.

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First off -- if it's still under warrantee, you'll want to go to and find the nearest service center. The next thing I say starts with "void the warrantee" steps. :)

It's very simple to open a stand mixer to see if you've got a simple problem or a bad one.

Unplug it.

Follow the aluminum "Kitchen Aid" band to the back of the unit, there's one main screw. Remove this, and set it aside with the band which should come right off at this point.

Now, there should be two screws on each side of the unit where the band used to be. Remove each of these. They're all identical, so no worries if you mix them up.

Now you can lift the top off of the unit and see inside. The motor is at the back of the unit, the gear box at the front is where the oil is coming from. Try (GENTLY) to tighten the screws that hold the gearbox together. With a little luck, the gearbox screws had come loose and it was oozing oil out through the seals. If they're all firm, then you've got more serious problems and you'll want to find a service center for it.

If the leak was just that the gearbox housing was loose, then you can open it up and see the grease that's inside. It's very thick grease, not liquid oil at normal temperatures, but I don't know what type of grease it actually is in yours.

The grinding sound you describe makes me think you've broken or dislodged the bearing chase though, and you've got bits of metal and/or small (1 - 2 mm diameter) bearings loose in the gearbox.

Good luck!

Posted on Aug 03, 2009

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Well you should read the menual and u will know .

Posted on Jul 24, 2009


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1 Answer

The beater will not come off and it's leaking oil

These are two separate problems.
The beater is probably being held on by dried/solidified flour. Try keeping the section where the beater joins the mixer head wet with water to loosen up the dried "glue." (Give it some time.)

The oil leak is caused by the grease separating. You can try running the mixer on high for a few minutes to re-mix the grease. If this does not correct things, you will need to clean out the old grease from the gearcase and replace it with new. See the Service Manual at:

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My mixer makes a grinding noise when I use it...where do I put oil in the mixer to stop the grinding sound?

The only place that could ever needs oil is the back motor bearing, and unless you are very mechanically inclined it is a major job. You need to remove all of the electrical components and the motor armature to get to this bearing.
It sounds like you may have a bad bearing. It is possible it just needs grease, but here again, this is a job for a mechanically inclined person. This involves removing the mixer head from the base and removing the lower section of the motor housing. If you do decide to do this make sure you have a new gasket and FOOD GRADE grease. These can be purchased on ebay.
I have rebuilt 10 of this style mixer. If you decide to attempt this yourself, let me know and I will give you my contact info. I will try to walk you through it. and I have one similar to yours that I have taken apart so I could send you pictures.

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We replace the motor and found it gets pretty warm to hot when using for awhile approx. 10 mins...and it started to leak oil.. we were told the person who replaced the motor used the wrong grease.. th

NOT TRUE!!!! the re is actually no oil in your mixer it is a vegetable base food safe gear grease. It separates after time and use and just need to be re packed and a new gasket installed. There is a quick trick to try to see if your mixer grease is at end of life or just separated from non use.

Turn your mixer upside down on a towel on the counter and turn it to speed six for two minuets then turn rite side up and run for two minuets again then do the process again at least one more time, if the leaking grease stops dripping then you have successfully re-mixed the grease if it continues to drip then your grease is at end of life and needas to be repacked. If it stops you will be good for another few years. i would suggest that you do the remix before you use your mixer if the remix works, even though you use it to grind meat it may be that you are still not using it enough through the year. So before mixing re-mix. Hope that helps, if you are at end of life on your grease you will have to do a tear down to clean all old and re-pack with new and a new gasket, Cheap to do but rather messy a two roll of paper towels job. nice thing is because it is vegetable based it washes right up with mild soap and water from all surfaces and your hands and your clothes, but don't wait to wash the clothes as it will stain if you leave it too long.

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Kitchenaid says to run the machine on 'high' long enough to heat the gearbox well and then turn the machine upside down and let it cool.

What happens is when you don't use your mixer a lot the grease in the gearbox will separate into oil and thicker grease. Warming it and turning it upside down is supposed to mix all the grease together again and allow it to flow to the top of the gearbox.

Give it a try, check back if you get no satisfaction and we'll get you started on changing your grease.


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I have a KSM90 that is about 8 years old. It started leaking oil and the top of the mixer goes down into the bowl too far and it 'drags' the attachment along the bottom of the bowl and makes a generally...


It sounds like the Planetary Gear assy. has gear lubricant leaking into it from the gear case above it. This may not be that unusual so there may be 2 possibilities or a combination of both. The Gear Case is directly above the Planetary Gear assy. It is filled (sort of) with a food grade (assuming...I hope) grease that is necessary to keep things lubed. There are fiber washers and possibly an o-ring in the shaft assembly which should keep the grease from migrating toward your food. The Planetary Gear assy. is the part that rotates around on the business end of the mixer. It has a bronze bearing that is intended to run without lubrication. However it is a wear point and if worn sufficiently, could allow escape lubricant from the gear case above to drip into your mix. The Kitchen Aid Service Manual is a good source of info. You can get it as well as complete diagrams of the internal parts at:

You can also get parts and the KitchenAid Service Manual.pdf at:

I know if it was my mixer, I'd give it a look. They're good tools and worth the effort!

Good luck.


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KitchenAid wobbles when mixing

Do not store or transport the mixer on its side ever. Always upright. The grease in the gearbox should even out eventually. Try sitting on it when it wobbles. At least yours works.

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KitchenAid wobbles when mixing

The "wobbling" sounds like an issue of beater to bowl adjustment, which can come out of alignment naturally over time and with use of the machine.

If the flat beater is striking the bottom of your bowl, this may cause the locking mechanism to loosen and may cause the mixing head to "bounce" during use.

Your Use and Care Guide will cover the "beater to bowl adjustment," which you can do at home in a few minutes with a flathead screwdriver.

Also, leaking of oil in a stand mixer is not necessarily indicative of a large problem.

Kitchenaid stand mixers are overpacked with oil to last the lifetime of the motor. If the motor sits idle for some time (is not used), the oil may begin to drip from the gears and settle. Oil leakage may primarily be seen from around the beater shaft or planetary action.

A stand mixer can lose up to a 1/4 cup of oil before it needs to be serviced.

It is recommended to run the mixer on speed 10 for 2 minutes in order to redistribute oil back into the motor. In order to prevent future occurences, this is recommended to be done every 3 weeks if mixer is not being used.

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Sounds like the hinge pin may have slid out of half of the base..

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