C5 rear differential
Instructor
Joined: Feb 2006
Posts: 173
Likes: 0
From: Palm Desert Ca
Check the torque on the rear axle nuts. They have a tendancy to loosen and cause clunking when starting out or changing directions. Lots of posts on here about fixing.
Loosen nut, loosen wheel nuts, jack tire off ground, remove wheel, Remove nut, push in on axle, lube axle splines from back side, reinstall nut, reinstall wheel, lower and torque wheel and axle nut.
Found my left rear loose, fixed by above procedure.
Phil
Loosen nut, loosen wheel nuts, jack tire off ground, remove wheel, Remove nut, push in on axle, lube axle splines from back side, reinstall nut, reinstall wheel, lower and torque wheel and axle nut.
Found my left rear loose, fixed by above procedure.
Phil
Pro
Joined: Oct 2007
Posts: 607
Likes: 29
From: Tulsa Oklahoma
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 46
From: Helotes TEXAS
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 46
From: Helotes TEXAS
Check the torque on the rear axle nuts. They have a tendancy to loosen and cause clunking when starting out or changing directions. Lots of posts on here about fixing.
Loosen nut, loosen wheel nuts, jack tire off ground, remove wheel, Remove nut, push in on axle, lube axle splines from back side, reinstall nut, reinstall wheel, lower and torque wheel and axle nut.
Found my left rear loose, fixed by above procedure.
Phil
Loosen nut, loosen wheel nuts, jack tire off ground, remove wheel, Remove nut, push in on axle, lube axle splines from back side, reinstall nut, reinstall wheel, lower and torque wheel and axle nut.
Found my left rear loose, fixed by above procedure.
Phil
Thanks
Pro
Joined: Oct 2007
Posts: 607
Likes: 29
From: Tulsa Oklahoma
Well I was wondering what ratio the RP was blended at. Did you notice the clunking immediately after you filled her up or was it more of a progressive thing. I did not add any limited slip. However, through every test I know how to perform, I got no clanking or clunking. I have been following your thread because I am having leakage issues. Just havent been able to find it yet.
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 46
From: Helotes TEXAS
Well I was wondering what ratio the RP was blended at. Did you notice the clunking immediately after you filled her up or was it more of a progressive thing. I did not add any limited slip. However, through every test I know how to perform, I got no clanking or clunking. I have been following your thread because I am having leakage issues. Just havent been able to find it yet.
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Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Adding too much is not the answer and will negatively affect how the limited slip differential clutch packs do their job. Too much and you run the risk of becoming a "peg legger".
The amount of LSA should be ONLY enough to prevent the clutches from chattering when turning, and NO more. If you're not experiencing chattering issues now, leave it alone.
HTH
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Tech Contributor
Joined: Jan 2007
Posts: 19,292
Likes: 1,109
From: Dyer, IN
BAD idea.
Adding too much is not the answer and will negatively affect how the limited slip differential clutch packs do their job. Too much and you run the risk of becoming a "peg legger".
The amount of LSA should be ONLY enough to prevent the clutches from chattering when turning, and NO more. If you're not experiencing chattering issues now, leave it alone.
HTH
Adding too much is not the answer and will negatively affect how the limited slip differential clutch packs do their job. Too much and you run the risk of becoming a "peg legger".
The amount of LSA should be ONLY enough to prevent the clutches from chattering when turning, and NO more. If you're not experiencing chattering issues now, leave it alone.
HTH
What about more cowbell, you can never have enough cowbell in a song...right? 
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Pro
Joined: Oct 2007
Posts: 607
Likes: 29
From: Tulsa Oklahoma
BAD idea.
Adding too much is not the answer and will negatively affect how the limited slip differential clutch packs do their job. Too much and you run the risk of becoming a "peg legger".
The amount of LSA should be ONLY enough to prevent the clutches from chattering when turning, and NO more. If you're not experiencing chattering issues now, leave it alone.
HTH
Adding too much is not the answer and will negatively affect how the limited slip differential clutch packs do their job. Too much and you run the risk of becoming a "peg legger".
The amount of LSA should be ONLY enough to prevent the clutches from chattering when turning, and NO more. If you're not experiencing chattering issues now, leave it alone.
HTH
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
That's why I would HIGHLY recommend checking into the axle/bearing matter FIRST, as it's more likely and tends to be a bit more common, and once someone just dumps an additional bottle into their diff (4 oz.), and turns out to NOT be the problem, then now they are faced with draining the diff fluid and starting there all over again (if they're even smart to recognize that fact), not to mention that the original "problem" still exists.
Burning Brakes
Joined: Mar 2003
Posts: 1,156
Likes: 2
From: Arlington VA
Well I was wondering what ratio the RP was blended at. Did you notice the clunking immediately after you filled her up or was it more of a progressive thing. I did not add any limited slip. However, through every test I know how to perform, I got no clanking or clunking. I have been following your thread because I am having leakage issues. Just havent been able to find it yet.
Pro
Joined: Oct 2007
Posts: 607
Likes: 29
From: Tulsa Oklahoma
I have had the RP Maxgear in my diff for well over a year now and not one issue. I did not add any additional LSA. I noted your leakage issue. I read somewhere that you need to be careful not to overfill the diff as it will have a tendancy to blow some of the fluid out the vent under hard acceleration. You might want to check that as possible cause for leakage. Good luck with it.
Intermediate
Joined: Dec 2002
Posts: 37
Likes: 0
From: Ft. Myers FL
I have had an ongoing noise that sounds like the one that has been decribed here. I went to the dealer and they drained and refilled the differential with what I asuume is the right lubricant. The noise did not go away. This noise never happens at speed but when I turn left from a dead or slow stop.
They sent me a copy of a tech bulletin #PI01369. Which describes what ends up being a weak weld on a gusset. Have any of you fine vetters heard of this before?
They sent me a copy of a tech bulletin #PI01369. Which describes what ends up being a weak weld on a gusset. Have any of you fine vetters heard of this before?
