Quick ??? loose rear hubs!!!

[CC Rider]

I had my quad up on a jack and noticed that both rear hubs wiggled a little on the axle, id guess about a 1/16th or so, not much but enough to make a small knock noise when i move it around. Is this normal wear, and do i just tighten the hub bolt?and stick the cotter pin back in? I appreciate the help!

[Colby@C&DRacing]

I use a 1/2 air impact to tighten the hubs, this keeps them tight. I also put a small amount of black silicone on the splines:)

[phatswinn]

that happened on my recon, itll just keep getting worse and worse, so change the hubs or axle (whatevers worn) asap

[the yella yeti]

Just take the cotter pin out, and tighten it down as hard as you can, and then reinstall the cotter pin.
I ususally have to put a new pin in because the old one is usually bent.