Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Re: Metallic \"Tink\" noise from RR hub, what is it?
What you're hearing is the hub working loose on the axel shaft - a common failure for the D20. That's why people switch to one-piece aftermarket axels.
There are no splines between the hub and axel. Instead there are serrations on the axel, and when the big nut is tightened it presses matching serrations into the hub which then doesn't slip. In theory. With age and rust, they do eventually spin.
You can tighten the nut, and maybe stop the click. It worked for me. The torque spec is 250 ft-lbs. When one of mine started clicking I loosened the nut and tightened it to spec. No change.
I figured that if it continued to click, it would spin free sooner or later, so I decided to tighten the nut severely and either fix it or break it on the spot. I put a 5' pipe over the breaker bar and stood on it with most of my 200 pounds. That got another quarter turn out of the nut, nothing broke, and it's been quiet since.