Try some carb cleaner behind the bowl arm. Your arm might be frozen on the slides or the ecentric on the handle is broken. But chances are it needs more work as well. If you want to sell it contact us at machinerysurplus at yahoo.com
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Transmission uses #0 weight grease, best to get direct from Hobart (their grease is the correct weight and approved by U.S. FDA & USDA as safe for use in food equipment) but if you insist on not doing so, at least obtain an Extreme Pressure #0 grease and don't overpack the transmission, I believe it should have 35 oz. if memory serves right.
Uses a heavier grease for the planetary gear, use #2 weight. Don't need much, just a light coat on the planetary gear.
Bowl lift rails use medium weight oil, again use food grade oil supplied by Hobart.
Hobart mixers are NOT designed to change gears while operating. The Hobart planetary gears are like the transmission in your car but, without the clutch. Everytime you change gears while unit is running you are tearing up the brass spacers, gears & seals. Time to call a QUALIFIED service tech to come out & sell you another planetary or rebuild your old one, about $2K, Buy a Varimixer if you want to change gears while unit is running, they use belts. Another planetary premature failur cause, over loading the bowl. Batters & icings- 75% bowl capacity, Dough 65% bowl capacity.
If you remove the bowl guard you will see a magnet that attaches on iy in a white housing.The scews come loose and prevent it from closing the switch.Also the switch which comes out of the top pedestal can be adjusted.Let me know.
Search for your mixer model in the Discontinued Products area.
Download file# F6731.pdf On page 4 find the drawing labled PL 2523 If your reassembly geometry doesn't match that of the drawing, you must correct it. If this solution has assisted you please rate it. Good luck!
Hi,I'm a hobart tech and repair these mixer's often.If you see oil in the drip cup then the center shaft seal in the transmission is worn.If there is oil near the transformer then the motor shaft seal is also bad.Hobart doesnt release their service manuals to the public but if you go to their site www.hobartcorp.com you can register for free and get a parts manual thats helpful.If you need help with the repair let me know,i can step you through it.
There is a website called onesharpstore.com, It carries parts for the hobart 30 quart mixer. I specifically saw the bowl and hook attachments as well as others like beaters and a cheese and vegetable grater. Hope this helps. And if you sign up I think you can even request a full catalog for your machine.