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Topic: Rearend vibration?

in Forum: C3 Driveline Components


Rearend vibration?

Posted: 6/1/04 9:40am Message 1 of 7
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Joined: 2/24/2004
Posts: 28
Hi,
In the past couple of months I have managed to loose two centre caps on my 79 L82. I have always had a vibration when accelerating from a slow speed on a tight bend or when leaving a side road and turning right joining a main road, this happens at any speed. However both the centre caps have come off the passenger side rear wheel. One I know came off when giving a large boot full of throttle on a left hand bend, the second (nice shiny new one) I don't know when or where. I thought the vibration/rumble was due to the locking diff so thought nothing of it. I even swapped the wheels around after the first time incase it was something with the wheel, but obviously not. When I jacked the rear up I did find some play in and out on that side and not the other, which going by other posts is the C clip missing in the diff, so that is something that needs attending to, would this also cause the wheel to vibrate enough to loose the centre cap? I'm open to ideas as I only have one more cap left before I'll need to buy another set.
|cussing|


white 79|COLOR=NAVY| |/COLOR|
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Rearend vibration?

Posted: 6/1/04 9:59am Message 2 of 7
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KERNERSVILLE, NC - USA
Joined: 1/13/2004
Posts: 1355
Vette(s): 1968 L-71 convertible
It also sounds like it might be time to change the differential fluid and check the end play on the spindles! |hammer|


Rearend vibration?

Posted: 6/1/04 2:03pm Message 3 of 7
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
yep

differential fluid change..
wheel bearing
and U-Joints..

i would check u-joints first..


Rearend vibration?

Posted: 6/1/04 3:54pm Message 4 of 7
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COLUMBUS, MS - USA
Joined: 1/11/2004
Posts: 331
Vette(s): 1972 Coupe; 350 4-speed with GM sidepipes; Classic White/Saddle
All of the above . . . plus other possibilities, including:

bad shock absorber (remote possibility)
loose strut rod
worn strut rod bushing and/or bushing cap
lost a retaining clip on differential side yoke (yikes! hope not!!)

My money's on a loose wheel bearing.

Let us know what you find.

John


Rearend vibration?

Posted: 6/1/04 5:40pm Message 5 of 7
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SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods
yep, my money's on the wheel bearings too.

When I pulled my spindles it look like someone ground them down to be able to slide the bearings on without a press. Really stupid idea |cussing|

Let us know what it is.


Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust

Rearend vibration?

Posted: 6/1/04 7:32pm Message 6 of 7
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
 cthulhu said: yep

differential fluid change..
wheel bearing
and U-Joints..

i would check u-joints first..
 


just because they are easiest and you should change them if you do wheel bearings anyway..


Rearend vibration?

Posted: 6/28/04 1:11pm Message 7 of 7
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Joined: 2/24/2004
Posts: 28
Well wheel bearings it is, along with a "c" clip snapped, will have to get someone to do the build as I'm fine with most things but not shimming bearings without the correct tools, the c clip isn't a worry to replace so long as it hasn't done any damage. Anyway I'm now off to try to find someone here in Blighty who knows his stuff and isn't a robber. Thanks again everyone.


white 79|COLOR=NAVY| |/COLOR|

in Forum: C3 Driveline Components


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