2001 International 3000 engine sound

[Beeb2]

My engine just started making a weird sound. Didn’t notice until I got out at a stop. It’s loudest at the very front. Below is a link to a video where you can hear the sound. I point to the general area it’s coming from... but it’s basically just from right inside the front.

Is this a bad sound? Sounds like maybe a fan??? But I know nothing about Diesel engines....

DT-466 engine
Allison 2500 transmission

https://youtu.be/DIwjbEVULc8

[EastCoastCB]

sounds like a pulley or water pump to me.

[Booyah45828]

That's a bearing going out or a slipping belt making that noise.

[cadillackid]

yeppers Booyah has it.. sounds like a slipping serpentine belt. or an idler pulley perhaps with a bad bearinf

[Beeb2]

Thanks guys. We’re hanging tight at a truck stop for the night and taking it to a mechanic in the morning...

guess we’ll be delayed as we flee civilization...

[Johnny Mullet]

Let us know what they find.

[Beeb2]

I was just digging through my old posts and realized I never gave the update. Better late than never, I guess... it was the bearings, and I think the belt itself ended up needing to be replaced. Got it in before it destroyed the whole engine though, so that was good. All in it cost us about a grand, maybe a bit more.

Just in case anyone in the future ever stumbles across this while trying to solve their own problem.