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vibration in drivetrain

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Old Mar 21, 2012 | 06:58 AM
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vibration in drivetrain

Hi guys , vibration is coming from somewhere in drivetrain. I haven't got a clue where it is. It goes away under acceleration , but comes back once you ease off of the loud pedal. It might be the carrier bearing. I'm guessing. If it is where do I get a good one.
 
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Old Mar 21, 2012 | 07:00 AM
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About any parts house will have them.
 
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Old Mar 21, 2012 | 07:18 AM
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Scratch the carrier bearing idea. There isn't one. Any other ideas it starts around 25 mph.
 
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Old Mar 21, 2012 | 07:44 AM
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Pitt, you mind "describing" the sound/effect your getting?
 
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Old Mar 21, 2012 | 07:54 AM
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Sure its not a harsh or loud vibration just a annoying one that goes throughout the truck. Plus I can sort of feel it in the wheel.
 
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Old Mar 21, 2012 | 08:02 AM
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Thanks bro! I've been thinking its my problem aswell, ince i've tried EVERYTHING but a new ZF6. HAve a thread, "wind thru a pipe sound", which, i was hoping was from the foil delete but nope, along with a turbo problem. Installed a new one, problem still exist...(that was expensive..haha). Gonna throw a carrier bearing on, and driveline rebalance, doesnt sound too expensive.

Does the "noise" seem to be with pedal applied as well, in that rpm band? Because mine does...
 
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Old Mar 21, 2012 | 08:46 AM
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when you are doing that, make sure to lube the spline shaft and shim the carrier bearing if needed.

went through the same issues when i first got old green (would shutter from take off, and vibrate until ~20mph). thought it was tires, then calipers, then shocks, then carrier bearing, then u-joints. shimming the carrier bearing and lubing the shaft solved it. that was ~7 years ago.
 
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Old Mar 21, 2012 | 10:13 AM
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From: BoCoMo
Originally Posted by BluePitt
Hi guys , vibration is coming from somewhere in drivetrain. I haven't got a clue where it is. It goes away under acceleration , but comes back once you ease off of the loud pedal. It might be the carrier bearing. I'm guessing. If it is where do I get a good one.
keep an eye on the seals where the pinion shaft come out of the rear axle and conects to the drive shaft. I had a u-joint going out and did not know it until the vibrations were so bad it compromised the seal and was leaking (where did that oil come from that was on the driveway????).
 
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Old Mar 21, 2012 | 10:21 AM
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I climbed under it. I couldn't feel any issues of slop in the rear driveshaft. I'm so puzzled here. I'm thinking of taking it to a garage. Or maybe have tires rebalanced.
 
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Old Mar 21, 2012 | 10:24 AM
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Originally Posted by BluePitt
I climbed under it. I couldn't feel any issues of slop in the rear driveshaft. I'm so puzzled here. I'm thinking of taking it to a garage. Or maybe have tires rebalanced.

try what i said first. won't cost much and take maybe an hour of your time. i used grease gun in a can which made it super easy.
 
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Old Mar 21, 2012 | 10:30 AM
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From: BoCoMo
Originally Posted by BluePitt
I climbed under it. I couldn't feel any issues of slop in the rear driveshaft. I'm so puzzled here. I'm thinking of taking it to a garage. Or maybe have tires rebalanced.

Greasing the spline shaft may be the answer.

Do you have a jack and jack stands to be able to get both back wheel off of the ground and put the gear in nuetral and then see if there is some play in the shaft/u-joints... (use jack stands)
 
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Old Mar 21, 2012 | 12:54 PM
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You may have a tight U Joint. Just my .02
 
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Old Mar 21, 2012 | 08:26 PM
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Thanks guys I will try it tomorrow.
 
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