Overhauling Derailleur Innards
I've got a rear derailleur here that I want to clean up pretty well. I took the anodization off and buffed it up all pretty, and now I want to make sure that the internals are still OK. There are a couple pivots plus the paralellagram part (this is an abnormal design... Suntour LePree (think suntour cyclone mkII)), and I opened one of the pivot parts up a little with an allen wrench and inside was a wound up coil. I'm thinking if I shoot something in there to clean it up I could then use some oil in there to smooth things up. Is there anything in particular I can shoot in there? Where should I be focusing on when I'm cleaning and adding oil?
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Clean it easily with any pressure spray product like brake kleen, lube the pivot points with light oil.
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When you're cleaning you should focus on the dirt (:rolleyes: ); when you're adding oil do so (sparingly) to moving parts where they connect.
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I'm a little concerned over the smut that is the residue from removing the anodization, so I want to make sure I don't damage the inner working parts over my desire to have bling blang shiny bike parts.
Pressurized spray, eh? Is brake kleen some kind of degreaser? |
It'll dissolve anything not metallic in nature.
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I think I've seen Brake Kleen in Advance Auto Parts and if it what I think it is, it will destroy everything but the metal. I think it is used to clean disc brakes on cars.
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Originally Posted by z415
I think I've seen Brake Kleen in Advance Auto Parts and if it what I think it is, it will destroy everything but the metal. I think it is used to clean disc brakes on cars.
The brand I've been using is Pyroil. Ingredients: Xylene, Methyl Alcohol, Acetone, Heptane, Carbon Dioxide. Mixture of quick drying ingredients. Description of Use: Removes brake fluid, oil, grease and brake dust instantly Use directly on pads, linings, and other friction parts...... |
You might also want to try a water based solvent like Simple Green, and or soaking the der in a bucket of soapy warm water.
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I have run mine in the dishwasher with great success. Just be sure to lube everywhere that needs it really good when done. I did take off the cage and clean the pulleys by hand (no bearings in the dishwasher! Also worked well on the FD and brakes.
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