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Old 02-25-06, 01:12 PM   #1
Kimbercop
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Parts Washer

I wish to take my rear wheel assembly (and chain) in to my work and use the parts washer to degrease the rear cassette. Should I allow it to air dry or blow it dry with an air hose. I had heard that you could work fluids into the hubs if you blew it dry with too much air.
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Old 02-25-06, 01:16 PM   #2
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Are you going to immerse the entire hub to degrease the cassette? I recommend against that unless you are going to rebuild the hub immediately afterward. Compressed air will be the least of your worries as the washer itself will undoubtedly force the cleaning fluid into the wheel bearings and you must avoid doing that.

Either remove the cassette and clean it separately or clean it on the wheel with an old tooth brush and a small amount of degreaser, keeping it away from the bearings.
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Old 02-25-06, 01:29 PM   #3
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My plan was to use the brush in the washer to degrease the cassette. The brush has a hose attached to it so the solvent comes out there, but I think I can turn that off and just spray solvent onto the cassette and then brush it around.

Or should I just go back to simple green and a tooth brush, and spend longer doing the cleanup?
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Old 02-25-06, 04:19 PM   #4
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I'd go back to doing the cleaning manually via the Simple Green and tooth brush routine. It may take a bit longer but rebuilding a hub or, worse, replacing one, takes a lot longer and costs a lot more. You definitely want to keep everything but the proper grease OUT of the hub bearings.
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Old 02-25-06, 04:40 PM   #5
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Quote:
Originally Posted by Kimbercop
My plan was to use the brush in the washer to degrease the cassette. The brush has a hose attached to it so the solvent comes out there, but I think I can turn that off and just spray solvent onto the cassette and then brush it around.

Or should I just go back to simple green and a tooth brush, and spend longer doing the cleanup?

I assume you'll separate the cassette from the freehub. If so, you might be able to disassembly the individual cogs and spacers. If you can do this, this is the most thorough way to clean, rinse and dry. I usually just wash with Simple Green, rinse with hot water and let it dry. BTW - I also clean my chain with Simple Green and rinse with hot water.
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Old 02-25-06, 05:49 PM   #6
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I like to use simple green, an assortment of brushes, along with compressed air to clean parts, then I spray them down with denatured alcohol which rinses away the dirt,soap, and moisture, and it dries quickly.

I bought a small ultrasonic cleaner on sale at Harbor Freight and use it to clean bearings and small parts.
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Old 02-25-06, 09:21 PM   #7
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I'm not very mechanically inclined, I had planned just to drop the back wheel and clean as is. Not anymore, I'll stick with the simple green and a toothbrush.
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Old 02-25-06, 10:28 PM   #8
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Originally Posted by Kimbercop
I'm not very mechanically inclined, I had planned just to drop the back wheel and clean as is. Not anymore, I'll stick with the simple green and a toothbrush.
i have lots of experience with this type of thing. use the solvent and brush, but do not submerse. then dry with compressed air at a distance of maybe 10-12 inches so you are not getting a forceful stream of air. simple green is worse. it contains water and other components more corrosive than solvent in parts cleaners. the worse the solvent will do if it gets past the seals a tad is thin the grease. simple green and water on the other hand will corrode

Last edited by mx_599; 02-25-06 at 10:33 PM.
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Old 02-26-06, 01:57 PM   #9
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Quote:
Originally Posted by Kimbercop
I'm not very mechanically inclined, I had planned just to drop the back wheel and clean as is. Not anymore, I'll stick with the simple green and a toothbrush.
I just use citrus cleaner, a hose and 2X5 (app) bathroom brush with a handle on top.

With the cassette on the wheel, spray with citrus cleaner, scrub with the brush, and rinse off. Just don't spray a strong stream of water directly at the center of the hub so water doesn't get into the bearings.

Then oil the freehub and you're done.
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