Question about KitchenAid KSM90 Ultra Power Series Stand Mixer

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Mixer leaked come oil

My sister passed along to us a used KSM90. She commented that she thought it had leaked out some oil, possibly not being stored upright for a short time. I don't see any mention of oil in the instruction booklet and haven't tried to dig into the unit yet, but see oil residue around the head pivot area. Any advice?
Thanks.
Dave R

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  • Ron Forstad Sep 26, 2008

    i have oil leaked from around rotary beater, it is a kitchenaid ultra power mixer, it has only been stood on a worktop, i moved it and there was a little puddle of oil, any idea's!!

  • rjdebellis Oct 17, 2008

    There seems to be oil leaking from under the head and drips onto the counter. Not much, but leaking oil on anything is generally a bad sign.

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  • KitchenAid Master
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This kind of unit are lubricated with grase paste. If the unit stays inactive for a long time, or if the motor and gears are overheating the grease paste gets melted into thin oil, and that will cause the leak.
The oil leak is usually coming from the gear box inside the appliance.
To fix the problem the unit must be taken apart, and cleaned. After this step, there is need to spread again the grease, using special foodsafe grease paste.
Disassemblying the gear box is not that easy, you will need previous experience and a gear puller to do the job properly and safely.
This appliances are also held with security screws to prevent the users from taking apart the unit, and can only be disassembled using a Security screwdriver tip.

The grease can be purchased here, check at the bottom of the page: Kenwood chef food mixer Grease.

Posted on May 28, 2009

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I have oil leak from Kitchenaid standmixer, what should I do?


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Apr 22, 2011 | KitchenAid KSM90 Ultra Power Series Stand...

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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...


Hi,

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:
http://www.goodmans.net/get_item_ka-4162075_kitchenaid-mixer-4162075-planetary.htm

You can also get parts and the KitchenAid Service Manual.pdf at:
http://www.mendingshed.com/kitaidparts.html

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

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Jan 02, 2010 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

Oil leak


Hi, W3HAL ? How much oil are we talking about, and over what period? How old is your machine? Your KA mixer?s internal gears are factory packed with enough grease to last a 'lifetime' (whatever that means). Depending on the age of your mixer, where it was stored (warm temps possibly?) and how long it's been idle and/or how heavily it?s been used; these factors all will eventually cause grease?s base oil to separate from its additives, with the resultant oil seeping from openings beyond the gasket down the agitator shaft. Gravity can be very insidious. 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. Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number, in your case, try KSM90P, and select one of the files listed under Parts List (check to see it this 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. Your transmission case gasket is Illus. # 18, which you might want to reorder for starters. Once apart you can check for any other unseemly wear and tear on the gears, etc. It can be messy but gratifying. As far as parts go, here are four potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com. Prices for the same part can vary widely between vendors, so do your comparison shopping. Finally, here's a link to an excellent 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 If this solution has helped you, please rate it, thanks! - hslincoln

Nov 30, 2009 | KitchenAid KSM90 Ultra Power Series Stand...

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Oct 26, 2009 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

Model KSM90 10 speed ultra power stand mixer leaking oil at the shaft where mixer tools attach. Is there a repair kit which includes a oil seal or something like that at a reasonable price?


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If you'd like more info on your mixer goto kitchenaid.com, look up your model # download the PARTS drawings. Use these drawings to re-assemble and to determine if you need any replacement parts. Be prepared to wait at least a month for your parts to arrive.

If this Solution assisted you, please rate it. ricardok45

Mar 06, 2009 | KitchenAid KSM90 Ultra Power Series Stand...

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