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below is a copy of an e-mail from Horartservice.com. I searched the web forhours for the correct oil and could not find any info so I e-mailed Hobart.
The Planetary is a different part from the transmission andthe sight glass on a M802 is for the oil in the transmission.
The answer that Hobart gave is not an NSF oil. Ineeded the oil for the planetary section on a model M802. Even the directionssay that it is normal for a drop of oil to occasionally drip from the seal.That is where the dough hook attaches.
I am in the process of researching the oil and Exxon / Mobildoes make a NSF version. I just need to find somewhere I can buy less then a 55-gallondrum. The above mixer only uses 6 ounces.
Take care and stay safe
Hobart E-mail follows
Hobartuses "EXXON SPARTAN EP-150 (6 oz)" in the M802 planetary. Hobart part #102973-13. This IS NOT a food grade oil. If you mixer is leaking you shouldhave it serviced.
Service, parts , lubricants and information canbe obtained by contacting your local Hobartoffice in Pittsburgh@ (412) 788-5380.
Field Engineer - Food Machines
Product Service - Tech Support
Once you're familiar with it, the A200 is OK to work on. Just pay close attention to the sequence in which the gears are removed and lay them out on a table in that sequence. You'd need to remove most of the gears from the center planetary shaft, which requires removal of the shift lever (right side, 4 screws). You shouldn't need to remove the planetary (lower end that holds the attachments and rotates). Eventually you'll be able to remove the smaller shafts as assemblies and replace the brass worm gear.
You'll want to scoop out the grease with brass shavings in it (replace all the grease to be thorough, especially if it has broken down and is very runny or very thick (the grease should be a little bit thinner than the consistency of peanut butter), spin the removed bearings by hand and listen for rough operation (particularly the smaller bearings on the upper end of the two small shafts (bearings in the upper bearing cover). Also check to see that the two brass bushings, which reside in two of the gears removed from the center planetary shaft, spin freely BOTH on the planetary shaft AND in the gear they reside in (if not, one of your speeds probably won't work).
For an experienced technician, the job would take approximately 1-1.5 hours unless the old grease is all cleaned out thoroughly to replace with all new grease (thorough cleaning requires the removal of planetary and planetary shaft), and thorough cleaning can be a time consuming process. Then you might get closer to 2.5 hours.
Get a pipe wrench and put it on the beater shaft,get a good bite on it.Grabe another pipe wrench and put it on the nut and turn ccw.I'm a hobart tech and repair these mixers alot,if your still having a hard time use a torch and heat the nut.Any ? let me know,can you please rate me.
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.
Sounds like the shear pin on the planetary shaft has sheared off. Has the mixer been subjected to a heavy load. Remove the planetary and see if the shear pin is intact otherwise you may have to open up the transmission.
The reset button is to protect over amping the motor. The N-50 is not a very strong unit, (commercially), but you won't break a gear. If you overload the unit, you'll either trip the overload (reset button), or you will break the taper pin that attaches the planetary to the center shaft.
If you're looking for a small commercial unit, and you're in the US, look into the 10 qt Precision Mixer.
hi,its no big deal--the mixer is filled with grease and its coming from the planetary.if it is bothersome remove the drip cup (silver ring) then you will see a roll pin that holds the planetary onto the main shaft.get a small punch and knock out the pin.if the planetary doesnt drop down use 2 flat head scewdrivers and pry it down.clean out the old grease and put in new grease.you can buy it from hobart or get a white lithium grease from an auto parts store.