Question about Hobart D300 Stand Mixer

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D300 I have a d300 with might be a sheared pin. A customer switched gears on the fly and it quit rotatting. I don't know how that assembly comes out. I have the bolts out of the top of the assembly but it does not budge and I am afraid to try and force it. Can you help me with some guidance or point me to a how to diagram? I would appreciate any help. Mark ed3622@yahoo.com

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See if all the gears are dead. This will indicate which key may be broke. If all the gears are gone, look to the small shaft with the brass gear. It engages the motor worm gear.

http://www.hobartlink.com/extranet/extranetmanualsandcatalogs.nsf/08082CF4BE829A3C852568E1006A9A00/$File/F-19118%20(07-94).pdf

Posted on Apr 25, 2008

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Do you have videos on how to fix a D300 hobart mixer transmission


I don't think they ever made a video for that.
The grease in the D300 is sticky and runny, and has to be removed out the top once the bearing plate is removed. On the top of the main shaft is the first gear cluster and a bevel gear beneath it. If necessary, use a pulley, BUT KEEP IT AS ONE ASSEMBLY.
Once it's out, the rest comes apart easily. Just lay out the components as you find them. Clean and inspect.
The first gear is made of the bevel gear as a base, a center hub with an outer ring gear, and a stepped cover on top that sits under the top bearing. Between the ring gear and the hub are 10 rollers and spring plates which bias the rollers into the shallower end of each roller seat.
You can get instructions and diagrams here.
https://my.hobartcorp.com/resourcecenter/Pages/FilterByModel.aspx
search model number d300. near the bottom of the options is form F-3492-N. That has detailed instructions for the older version.

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1 Answer

Hobart Mixer D300, When mixing mashed potatoes paddle will only turn in low gear. When product is mashed with milk added it sometimes will turn in 2nd gear, but never in top. When this happens, motor is...


Sounds like the keys in the shifting sleeve may be sheared. The transmission will have to be disassembled and checked for broken parts. Check www.hobartservice.com for your local Hobart office.

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1 Answer

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1 Answer

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1 Answer

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you have no speed 1,2,3 right?first thing to do is drop the planetary (this is the bottom with the beater shaft)undo the bolt and it will drop down.you will see 1 gear,that gear should not spin without the shaft spinning too.if it does you have a sheared key on the gear.if you have access to the transmission check the worm gear attached to the motor it has a roll pin through it make sure its not sheared.then look at the top left gear assembly and check for sheared (broken)keys.clean up all the parts,if you dont you could miss something.let me know.

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3 Answers

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http://www.food-equipment.com/parts_Hobart_mixers.htm About halfway down. Hope this helps :)

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