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Cleaning out old transfer case oil??

1220 Views 10 Replies 6 Participants Last post by  mac102004
94 fourtrax 300 4x4 / trx300fw

I bought a used transfer case off eBay and all seems to be in great shape. All the bearings are tight and it spins real nice. But it smells awful and I want to clean out all the old oil that's in it.

I don't really want to open up case I don't think the gasket is readily available. Is there something I can run threw it to clean it out?

Also what do you guys run in your transfer case? I've seen guys fill them with marine grease.

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I'd flush with diesel and then let it drip dry upside down, then fill with gear oil.

If you drain it well and fill it with oil I don't think you have to worry about anything firing off.
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