Drive shaft bushing replacement, lube? - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 10-22-2016, 06:56 PM Thread Starter
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Drive shaft bushing replacement, lube?

I've been using the plastic (nylon?) shaft bushings for some time now, and they always go out of round just by the nature of a partly oxidized shaft plus the machine weight. Today at my mower shop, I picked up a couple new ones made from what looks like bronze. I'd like to make the best of this change and was considering...

Sanding the half shafts, and coating with a light layer of Fluid Film, and then putting anti-seize around where the shaft and bushings interface.

Does this sound like a good strategy to slow down oxidation and make the bushings last longer?
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post #2 of 6 Old 10-22-2016, 07:25 PM
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a coat of Never-Seez will do the trick...
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post #3 of 6 Old 10-22-2016, 09:42 PM
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What you probably got are oil impregnated sintered bronze bushings. An alloy powder is pressed to form a material like a sugar cube. It is then baked just enough to fuse the particles while preserving the porous structure. The formed part is then immersed in oil in a vacuum chamber. this causes oil to fill the voids that had air in them. The resulting part can approach 20% oil content. The material is self lubricating. It can be a great long wearing surface you just don't want them dealing with mechanical stresses like an overhung load. In a good housing they'll do fine.

https://en.wikipedia.org/wiki/Oilite

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post #4 of 6 Old 10-26-2016, 08:20 AM
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You go the right advice. When I tear a unit down, typically I'll paint the auger shaft and axel shafts with Rustoleum & primer before reassembling. Helps prevent future rust and makes it look pretty, but that's a personal thing.


What's been recommended is fine.
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post #5 of 6 Old 11-02-2016, 03:52 PM Thread Starter
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I ended up having to sand the rust off the half shafts in order to get the bushings to slide on. I put a light coating of light oil on the shaft, and anti seize where the shaft and bushing meet. Nice and smooth, very little play.

Also put anti seize on the bolts for the skid shoes. Finding all kinds of uses for the stuff now.

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post #6 of 6 Old 11-04-2016, 07:40 AM
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IMHO anti-seize works great in places it's protected from the elements like threaded holes and such. If it's applied someplace open it dries up over time and flakes off. I try to hit my bushings with an oil can at the start and a couple times during the season if I get a chance. I grease when I have it apart. It's likely overkill but the 32's are heavy and it's a lot of weight on the axle bushings and a few drops of oil is cheap insurance.

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