Mystery part to a 1950 Hobart N50 Mixer; serial number 997185
I have taken apart a 1950 Hobart N50 mixer and had many of the parts replated/restored/painted. I took the pieces back to a Hobart service facility and the technician there put the entire unit back together but has 4 remaining mystery parts left over. (1 part, 4 pieces)
Due to the age of the unit, the service department has no drawings nor parts diagram that give a clue as to where this part goes.
The mystery part is cylindrical and looks like a roller bearing with a hole drilled completely through its center. The part is .687 inches long with an outside diameter of .375 inches and hole drilled through the length with an ID of .220 inches.
On later years diagrams, there is a mention to a part (sleeve) that covers the four bolts that hold the motor into the body and to protect the electrical wire connections. It is not this part.
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Re: Mystery part to a 1950 Hobart N50 Mixer; serial...
Go to www.hobartservice.com, register, then go to select "food machines" in the Product Group, then "mixers"and look for the Discontinued Products, then find the N-50 mixer drawings, they are all there, even the old ones. Look through the "exploded" drawings for your extra parts. It seems to me that the tech who put this together should know if they belong to this mixer or not. Does he work for Hobart? Or is he a repair person who states that he knows how to repair Hobart products. If he does'n't work for Hobart, these parts may have been on his bench BEFORE he looked at your mixer. A true Hobart Tech has access to specs on ALL models and the ability to access the Service Manuals. If you find this solution helpfull, please rate it. ricardok45
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The frequency is the same in all gears.
disconnect the power and invert the mixer and remove the planetary after driving out the taper pin, then you can access the transmission. It may be a rotor shaft bearing in the motor or no grease on the worm gears.
Nice touch with the video.
If you need parts:
If you call your nearest Hobart Parts place they can tell you. If they refuse this simple request, log on to www.hobartservice.com and look in the discontinued products menu, select Food Machines then Mixers and sift through the files until you find the documentation for serial numbers/dates. The lists are not complete and stop in the late 1980's. If you're lucky, you can find out which plant manufactured it, as the first two digits of the serial number indicate where it was built. The serial numbers are not in code, so it's relatively easy to get a date if you do the math. While you're there, download the manuals for parts and operation. You won't find the service manuals..."Top Secret"! Good Luck! Ricardok45.
Hi Anne. Call your nearest Hobart parts place. The parts guys will be able to tell you the age and which plant it was manufactured in in the USA. Another source is the hobartservice.com website, look for discontinued products under the food machines group, then select mixers and browse until you find the file that dates machines. One thing to watch for when buying is oil leakage that appears to come from the bottom of the stand. This indicates that the transmission grease is partially separating the oil out of it and it's leaking out of the rear bearing and dripping down. If the leak seems excessive, pass on the purchase. This drip could also indicate excessive wear on the bearings. Also run the mixer in all speeds, if is sounds like a tank approaching, it probably needs a rebuild.
Some of the N50's were packed with a white grease. It tends to seperate. So the oil portion finds it's way out. It sounds like it is getting into the motor case, and is running down the inside of the column. Hobart now uses a brown clay based grease --- Darina 2.
If the amounts are small, and the mixer is not excessively noisy, I wouldn't be concerned. If you wanted to fix it, the transmission would need to be removed, cleaned, and repacked. For a Hobart tech, 3 hours labor, $45 grease, plus parts.