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Planetary Drive head keeps falling out during use

At some point the planetary drive head started wanting to just drop off (fall) - like, into the mixing bowl) when operating the mixer. Why does that happen? Does something need to be replaced? Did a clip or retainer disappear? I could epoxy that drive head to the vertical shaft (the one that sticks down with MANY tiny long teeth along the shaft, but that might affect repairability long term.

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You likely lost the c clip on your vertical shafts in the gear box.

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I don't see a clip on the parts list. Mine has done the same thing. Frustrating.

quinn47 did you get yours repaired? what did you do??

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Any idea where to get a replacement part for this fix? I had the same issue.

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THERE IS NO CLIP ON THE 600. So, did anyone actually fix this?

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I had the same problem. It appears that the shaft which goes into the housing is splined and the aluminum housing spline has been stripped out. I’d take the upper housing apart. Remove the clip to drop the spine shaft out. Next use a metallic epoxy to epoxy the spline shaft back into the housing . Make sure the housing where the spine shaft is really clean. Leave to set and then reassemble. Use a good epoxy that is used to build up gear journals usually found into automotive stores. Otherwise buy a new housing.

Good luck

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quinn47 , If part not available for some reason. Just a thought! If possible and you have no alternative, is it possible to drill a hole, then thread hole and use a set screw to keep the piece in place when using and still be removable when need be. Good luck.

I hope this helped you out, if so let me know by pressing the helpful button.

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Pinning the shaft like this works. I pre-drilled with a .100” drill, followed by a .125” and then drove a 1/8” spring pin in flush. There is a step in the bore in the hub around the shaft. After pinning I filled this gap with JB weld to increase engagement bearing and I I put a dab of JB weld on both ends of the spring pin to resist walkout. I made sure all the parts slid well on the shaft and redistributed some grease to all the appropriate places.

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+1 on pinning the shaft solution. I will check back someday to share if it still worked, or if not I won't have to remember to check back! The Shaft in the center of the bottom attachment plate had pulled almost 1/2" out, and the ring gear (outside gear) had worked it's way down too! It was hanging down about 1/4" before the planetary gear inside it disengaged and my wife noticed to tell me.

I used a press (not necessary to have a press though) to press the shaft back in and pinned just like KenBig49.

My one tip is to double check the depth that you press the shaft back in- in my case, pressing it about 1/16" or so LESS than bottoming it out would allow the dowel inside the gearbox to slide in more easily. I was too happy to "press it all the way home" since I have an actual press to use.

Let's see how it goes!

Bernie

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The person that said Apoxy tothe top was the only one that made any sense to me. That’s what I did and I hope it works.

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How is it holding up? The drive head on my 600 just fell off, and I was considering using JB Weld to fix.

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Here's some pictures the job that I did on it. Was white, I took everything apart, And painted red. I try to put a pin under the planetary but didn't work, Wasn't much space to hit the shaft and be secure. So what I did, I put the pin on the top side. I did use a pain that I bought on Harbor Freight Tool if you decided to make the same job make sure you open up the both ands off the PIN, it will prevent the pin to come off good luck.

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Before I put something permanent in the planetary, I decided to try like a friction seal. A small gasket, rubber band or even foil wrapped around the rod. Will comment further when I see if this works.

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I am eager to hear how it goes, but I didn't have any concern about putting something in that part of the planetary. The way I figure it, that was never supposed to separate in the first place, and that shaft is not in the way of anything else (i.e., it never needs to be removed from the planetary for maintenance or other repair).

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After cleaning the housing and shaft squeaky clean, I applied two part epoxy to the splines on the shaft and installed into housing. I let the epoxy completely cure before drilling my 1/8” hole then installing the 1/8” spring pin. In my photo you can see the epoxy squeezed out about a 1/16". This prevented the upper ring gear from fully seating where I could not install the pin through the shaft. I used a razor knife to cut the epoxy off flush and everything fit perfectly!

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