etorque mgu noise identification

[boutwater]

I'm trying to identify where this noise is coming from. I think that it's the pulley that is on the MGU, but I'm not positive. Posting here with sound to see if anyone can identify it from the noise alone. Or if not, how can I figure out where the noise is coming from. I know mechanics have a tool for identifying it, but my ears aren't letting me pinpoint it exactly. I've had my mechanical and hydraulic tensioners replaced, and would rather not replace the whole MGU if just the bearing can be replaced. Thanks for the assistance in advance! Here is the video:

https://imgur.com/a/wY7OtA4

 

[mikeru82]

Failing bearing in the MGU. It's a common failure point. Some people have been able to replace the bearing. Search the forum for more threads about this issue. I would stop driving the truck or you will be stranded when it totally fails.

 

[Trooper4]

I'm trying to identify where this noise is coming from. I think that it's the pulley that is on the MGU, but I'm not positive. Posting here with sound to see if anyone can identify it from the noise alone. Or if not, how can I figure out where the noise is coming from. I know mechanics have a tool for identifying it, but my ears aren't letting me pinpoint it exactly. I've had my mechanical and hydraulic tensioners replaced, and would rather not replace the whole MGU if just the bearing can be replaced. Thanks for the assistance in advance! Here is the video:

https://imgur.com/a/wY7OtA4

Loosen the belt and spin the pullies/tensors, and the MGU pulley. You will be able to tell by the rough/grinding feel. That should tell you if it is bearing failure and which one.