Question about Hobart D300 Stand Mixer

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D300 hobart mixer

Which way does the springs go in on the roller clutch and is there a repair manual for this mixer with electric diagrams I have the part break down






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  • J. Hobart Tech Dec 03, 2013

    On the A200 and D300 the Spring goes on the RIGHT and the Roller is to the LEFT of the spring. The BOW in the spring is touching the roller. Hope that helps. jonathan

  • J. Hobart Tech Dec 03, 2013

    when you are looking at the top of the CLUTCH, then The Roller is to the LEFT of the SPRING. Make sure the CLUTCH is in correctly with the flat side of the clutch facing to bevel gear below it or it will not work correctly when shifting. ALSO, make sure that this whole mechanism is moving smoothly and not seized up. In other words, the clutch and these small springs and rollers should want to easily and smoothly fall out as you assemble them -- this way you know it will work when assembled. On the A200 just install the gear with the bevel gear attached and remove it the same way. On the D300 same as well. Wear gloves as to not hurt your hands with the sharp edges on these gears and such. Email me if you have further questions -- i work on these units A200 and D300

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I have an electrical diagram, I actually got rid of all the safety switches and whatnot from the one I just purchased and am at same point as you on the clutch rollers.

Posted on Aug 05, 2013

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I have a spare unit for dsale 1500.00 cdn

Posted on Oct 23, 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.

Mar 02, 2014 | Food Mixers

1 Answer

How do i put back togeather Hobart 300-d mixer


http://www.hobartservice.com/Parts/

Go to this page and click on Hobart Smartparts System. Select Food Machines, Floor Mixers, D300 and you will eventually find parts breakdowns.

Feb 25, 2010 | Hobart D300 Stand Mixer

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I need diagram of gearbox for Hobart d330 mixer


Parts manuals are available for viewing and free download at www.hobartservice.com

Dec 23, 2009 | Hobart D300 Stand Mixer

1 Answer

3rd gear gets rough ...


The symptoms you are describing would lead me to believe that the shifter clutch sleeve (part # 70035-1) is worn out. There's a chance that the gear that engages the clutch is worn as well, but less likely. A significant amount of transmission disassembly is required to access and replace these particular parts. There are a lot of things that can go poorly if you don't pay attention to detail when disassembling/reassembeling the transmission of a D300 (ie clutch rollers and springs) On a brighter note, it's about a 90 minute job for a proficient technician, if everything goes his/her way. That money would be well spent.

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My Hobart D300 mixer appears to be leaking oil/grease


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Sounds to me like the shifting yokes are locked up,or a broken shaft.Is there any noise?

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1 Answer

Problem with the 3rd gear on Hobart D300


Hobart won't give up service manuals The slide for your shift fork may be froze or corroded at top. The gear setups are fairly simple. The mainshaft nut comes off counterclockwise. The top gear has one way rollers with shims under the large washer. This gear assy must go back in the right way or you will break gears as soon as you start it.These mixers corode a lot at the top gearbox when they sit idle from moisture. Also check for broken gear teeth that may be jaming up he works. If you want to sell it let us know.
Dave at machinerysurplus@yahoo.com

Dec 11, 2008 | Hobart D300 Stand Mixer

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Bought Hobart D300-T at auction


i have another for sale - working 1500,00 cdn

Oct 19, 2008 | Hobart D300 Stand Mixer

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