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MY MTB is fitted with Mavic Crossmax 26" wheels (early 200x model). The freehub sometimes makes a strange noise when coasting at high speed that stops if I pedal forward once. In the past, spraying chainlube at both ends of the hub solved the problem. I tried that again this time and the issue is not happening that often, but it still does occasionally. Is there something I can do other than take it to a repair shop?

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    Check this video. youtube.com/watch?v=ZqfkAoER3cw you’d need basic tools plus the special park tool to get it apart for a full service. It’s a fairly simple task if you’ve got the tools and motivation but for a once every X years task maybe easier to give to bike shop. Apr 12 at 22:08
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There's a few different Crossmax/Crossride/Crosswhatever iterations for how you get to the freehub guts to service it. For the one you have, I think your probably just pull off the endcaps, or take them off with a 5mm wrench on each end if there are such wrench flats there. You don't have to take the cassette off; I always do anyway, but it's fine not to if you don't have the tools.

When you take it apart, your chief concern is the pawls or springs flying somewhere and getting lost. It's good to do this operation suspended over a tub or similar so they have nowhere to fly to. The symptoms you're having mean there's some possibility one of the sets is out of place or otherwise unhappy.

Clean everything, and then lubricate it. Mavic freehubs are pretty insensitive to what you use, but typically go with a medium to heavy weight oil. Mavic neutral support mechanics are known to favor Shimano mineral oil. Make sure to keep track of the washer you'll find in there.

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