Rear Axle Nuts
Thread Starter
Drifting
Joined: May 2003
Posts: 1,328
Likes: 3
From: Las Vegas Nevada
Rear Axle Nuts
Was reading about some clicking from the rear, and saw the threads on tightening the axle nuts to 118 ft-lbs.
I put the torque wrench on mine, and got 70 on one, and 60 on the other!
Tightened them up, but next weekend I will back off and put loctite and torque it properly.
I put the torque wrench on mine, and got 70 on one, and 60 on the other!
Tightened them up, but next weekend I will back off and put loctite and torque it properly.
Safety Car
Joined: Sep 2000
Posts: 3,604
Likes: 395
From: Austin, TX
Just checked my '08 (3500 miles) since I was hearing some noises from the right rear. Left side was about 160 and the right was maybe 100...not sure as I have the clicker type torque wrench and didn't do it in steps to see what it was. I don't think this is the cause of the noise but I'm glad I checked.
Melting Slicks
Joined: Dec 2007
Posts: 2,902
Likes: 667
From: North Fulton Georgia
Just checked my '08 (3500 miles) since I was hearing some noises from the right rear. Left side was about 160 and the right was maybe 100...not sure as I have the clicker type torque wrench and didn't do it in steps to see what it was. I don't think this is the cause of the noise but I'm glad I checked.
Safety Car
Joined: Sep 2000
Posts: 3,604
Likes: 395
From: Austin, TX
I don't want to start a panic or any rumors but the right side was definitely not as tight as the left. I just don't know how loose unfortunately. My gut feel is that it was looser than the GM spec's would allow from the factory.
Anyhow, don't everyone get all
because of this one data point. 
Anyhow, don't everyone get all
because of this one data point.
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
My dealer (Mark Schols Chevrolet,
) mis-diagonised a frequency-based vibration as a differential issue, and replaced the entire unit with a brand new one. When this did not cure the problem, I asked if they had checked the axle retention nuts. They said no, the problem with the axle nuts was a Z06 specific issue. I insisted that the nuts be checked, and, bingo, right side was about 20 pounds, left side much less. Dealer replaced bearings and nuts, torqued them properly (151 ft lbs) and lock-tightened them down. Problem solved. I suspect loose nuts will evidentually cause bearing failure.
) mis-diagonised a frequency-based vibration as a differential issue, and replaced the entire unit with a brand new one. When this did not cure the problem, I asked if they had checked the axle retention nuts. They said no, the problem with the axle nuts was a Z06 specific issue. I insisted that the nuts be checked, and, bingo, right side was about 20 pounds, left side much less. Dealer replaced bearings and nuts, torqued them properly (151 ft lbs) and lock-tightened them down. Problem solved. I suspect loose nuts will evidentually cause bearing failure.
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Safety Car
Joined: Sep 2000
Posts: 3,604
Likes: 395
From: Austin, TX
I used the 34mm socket that I had laying around from fighting the infamous ticking issue on my C5. I believe its from Autozone (not Pep-Boys like I originally said) but not positive. It fits a little loose but works fine.
Last edited by SnowyATX; Mar 22, 2008 at 06:32 PM.
