Question about Hobart A200 Stand Mixer

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HOW to remove the lower oil seal on the agitator shaft?

I've dismantled my A200 to replace the lower oil seal. There seems to be a cup (?) that is pressed in to the casting. I've tried levering it out - gently! - but it won't budge. I don't have a decent diagram, so can't be sure if it's just a washer or indeed a cup... anyone done this?

It's an old (1970s vintage) A200 mixer

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Here is the parts catalog. Other than some of the sub-assemblies, your unit is the same.

Page 14-15 item #25 depicts the seal. It just presses in. (From bottom)

http://www.hobartlink.com/extranet/extranetmanualsandcatalogs.nsf/57866D624A678E7385256CB0007232DA/$File/F-19357%20(05-95).pdf

If you need more detailed help, let me know. Good luck - Mike

Posted on Jun 02, 2008

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I've broken the agitator shaft pin on my Hobart A200T. I can find replacement pins online, but the local Hobart tech. is MIA. How do you remove the pin? How do you secure the replacement in the...


Drive it out with a punch and hammer. It's best to take the planetary off the machine so you can support the shaft. If not it puts a lot of unnecessary stress on the bearings and other parts.

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HOW CAN I GET OUT THE AGITATOR PIN IN ORDER FOR ME TO REPLACE THE OIL SEAL


Punch and hammer. It's best to remove the planetary so you can support the shaft while driving it out. If not it puts a lot of unnecessary stress on the bearings and other parts.

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1 Answer

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OK guys, let's try to solve your common problems first then the rest will become clearer.

The Hobart A200,,,,,,,, does not use oil! It uses grease! If you see oil, it's because the grease is separating the oil in the grease. Both machines have not been serviced for at least 5 years. That's about the lenghth of the lifetime of most greases. I recommend that you call Hobart and ask about their tech. rates. All bearings should be checked carefully for wear, as should the worm gear, seal, and the Bronze gear that it turns. The Planetary (mixing part), should be removed as well, cleaned. and inspected. Replace the seal on the planetary and on the mainshaft. Removal of all old grease is required, as it's no longer doing the job it was designed to do, will result in advanced wear, and is the actual source of your problems. The seals were designed to seal grease, not oil.

If Hobart is too pricey for you, and they are for many, try to find someone from a wholesale restaurant equip. place who has rebuilt these machines, or find a repair shop who have experience with this Hobart model. If you'd like to tackle the job yourselves, go to www.hobartservice.com. Register for free, then find the files that match your mixer model and ML # and download the parts files for it. These exploded drawings will be very helpful with your task.

Either way, these mixers need to be opened up to remove existing oil and hardened grease, especially the oil! The planetary must be removed to drain any oil out of it and to regrease it. If you can get the oil out of the mixer, a short fix would then be to simply regrease the the mixer and put it back into service, leaving the existing seals in place. Don't forget to wipe out the shiny ring on the planetary, if it too has oil in it.

There is no seal at the hub. No seals can be tightened. The oil leak underneath the mixer comes from the motor shaft seal at the transmission case where the pinion gear enters the trans., it flows down into the mixer support column and drips onto the floor or counter, again, because of the breakdown of the grease.

If you tackle the job yourself, find your local Chevron Distributor and get several tubes of the approved grease, namely, Chevron FM ALC EP NNGI 2. Chevron p/n 230204-000. If you've found this solution helpful, please rate it as fixya!

Good Luck! ricardok45

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1 Answer

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Sep 10, 2008 | Hobart A200 Stand Mixer

1 Answer

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1. Remove the acorn nut, hex nut, and washer that hold the "planetary" agitator section on the transmission shaft.
2. Remove the trim ring (if any) around the same.
3. The agitator section should now be able to be worked free.
4. Remove the retainer clip on the top of the agitator shaft. (Some models have a pair of hex nuts here; if so, remove those.)
5. Pry the gear up and off the shaft. Remove the square key from the shaft keyway at the same time.
6. Tap gently on the top of the agitator shaft to drive it out from the bearings and grease seal.
7. Recommend removing and replacing the top bearing at this time; it's inexpensive to replace, if you're in this deep.
8. Use a suitable diameter piece of round steel stock to drive out the lower bearing and oil seal. I don't recommend using the agitator shaft.
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11. Fill cavity with approved lubricant. I use USP-grade mineral oil, as it is food-safe and provides satisfactory lubricity.
11. Install top bearing, tap gently into place.
12. Reverse steps 5-1 to reassemble.

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