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Drive Shaft Ring?

cNate
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cNate Enthusiast

cNate

Posted
Posted

This ring is supposed to be connected to my drive shift where it meets the rear differential/ transfer case. It’s come off and some parts are missing. Getting the trucked towed to the dealership now.

 

What is this part called? Anyone have a part number?7458240a9ceed30b8c5108265885f88c.jpg

 

 

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kylant Enthusiast

kylant

Posted
Posted

i think it is just a vibration dampener.

I have seen a couple of these fail. 

I don't know why it is even needed. if the driveshaft is balanced, I don't know if it is necessary

  • 5 months later...
Laurent Kim Enthusiast

Laurent Kim

Posted
Posted

I just had the same thing fail over the weekend.  Did you ever find the right part name and what was the fix for this?  I figure it came off from the front of the drive shaft, but I couldn't figure out how it was attached to begin with.  Was there some sort of retainer that broke away?

Thank you,

 

Laurent

Another JR Senior Enthusiast

Another JR

Posted
Posted
On 4/26/2021 at 6:37 AM, kylant said:

i think it is just a vibration dampener.

I have seen a couple of these fail. 

I don't know why it is even needed. if the driveshaft is balanced, I don't know if it is necessary

If they have a vibration damper at that location it’s likely for torsional vibration, not unbalance. 

  • 3 months later...
Jspafford New Member

Jspafford

Posted
Posted

We had this happen to our 1-Ton at work.  It was driven over a stump and the stump knocked it off.  We ordered a new one from GM, but in the mean time we just took the driveshaft loose at the rear and slide it off.  We've put probably 20k on the truck without it on there and it's fine.  It used to be mounted directly in front of where it is now on that round circle flange.  It's help on with rubber bushings.  Our new one is still sitting in the box. 

redwngr Senior Enthusiast

redwngr

Posted
Posted

It's for torsional vibration -- to make the driveline components last longer. 

 

Same thing as the harmonic balancer on the front of the crank.

 

  • 1 year later...

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