Question about Hobart D300 Stand Mixer

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I suspect my D300T Hobart Mixer has a broken shaft I Need a parts/manual listing to help me take apart mixer, retreive broken parts and then order required parts

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Hi. Go to hobartservice.com, register for free. This will allow you access to the parts files for your D300T mixer. Download them. When you begin your disassembly, take a photo of every piece that you remove, lay these pieces on a piece of cardboard or something suitable in the order that they were removed. This will help you greatly with your project. Good luck! ricardok45

Posted on May 21, 2009

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ACTUALLY no need to go to HOBART -- just type in HOBART D300T MANUAL and online you will see several manuals available with parts breakdown. I will warn you that this is very difficult and the mixer has to have everything just right to run correctly. All the best.

Posted on Apr 13, 2014

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My kitchen aid mixer is leaking oil or grease from the center shaft. When I opened the planetary there was grease in it. is there suppose to be grease there? is there a seal needed for the center shaft?


Hi TIOBEAN, by the symptoms you describe it appears the Center Shaft ‘O’-ring and quite likely the Transmission Gasket need to be replaced. You don’t mention how old your Artisan mixer is, but I assume it is out of warranty.
The internal gears of your mixer are factory packed with enough grease to last a 'lifetime'—whatever that means, and depending on the age of your mixer, where it was stored, degree and intensity of usage; these factors all contribute to the breakdown of the grease into its constituent parts (oil and suspenders), which have seeped beyond the gasket and ‘O’-ring, down the planetary (agitator shaft). Gravity can be very insidious. The residue coming from the agitator shaft is the gear lubricating grease oil that has come out of suspension.
So how bad is this oil leak problem and what can you do to fix it? First, if the amount of oil found leaking was small and if your mixer otherwise works normally with the missing oil you really don’t need to take your mixer apart to ‘fix’ it. The good news, though, is that you can take the mixer apart and 'fix' it, if you feel it is necessary.
It would be helpful to have the Part List manual as a reference. If you're lacking one, you can download a PDF version from the KA website at: http://www.kitchenaid.com/flash.cmd?/#/page/home. Having the Parts List on hand will also be helpful as you will have to disassemble and reassemble your mixer to replace the ‘O’-ring and gasket.
Click on Customer Care>Locate Manuals & Guides> and enter the 6 character model number, KSM150 and select the file KSM150PSWH0.pdf (773.44 KB) listed for your model that appears under Parts List (61), and save that file to your PC.
Turn to pages 6 & 7, titled:”Case, Gearing And Planetary Unit” and locate Illus. No. 28, Center Shaft & O-Ring; particularly Illus No. 15 & 16, Transmission Gasket and ‘O’-Ring respectively. I suspect these parts have failed and will need to be replaced. Now the real fun begins!
To get to the Vertical Shaft 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 all the lubricating grease from the transmission housing and gears. This will allow you to remove Illus No. 11, 13, & 14, Bevel Pinion Center Gear, Pin (Vertical Center Shaft) and Groove Pin, respectively.
You should now be able to tap the Vertical Center Shaft (Illus. No. 12) down through the Lower Gearcase housing to access the ‘O’-ring.
Besides ordering a new ‘O’-ring (Illus. No. 16) and Transmission Gasket (Illus No. 15), 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 them for any other unseemly wear and tear, 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.
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

Feb 09, 2010 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

I have a Kitchen Aid Professional 600, 6QT, 575 W mixer. I went to use it and the beater and the assembly that it attaches to dropped down in my mixing bowl! What holds this assembly up? I did not find any...


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.
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

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