strange failure

[Chris142]

A few weeks ago I put a new water pump in a 2015 Dodge truck with a 6.7 Diesel. The belt was pretty new according to the customer and after looking at it and testing it with a wear gauge I agreed that it's ok to reuse. The belt was a top quality Gates green strip belt.

This water pump is just 2 bolts and it falls off, similar to the old 5.9 diesel.

1400 miles later something shredded the belt. The belt came apart with so much force that it ripped the wires out of the fan clutch and the harness.All the pulley's and such spin fine.

I put a tensioner,belt and fan clutch on it and repaired the harness. No idea what got into the belt. Maybe a piece of road debris?

 

[tcp71]

Misalignment on the pulley of the new pump?

 

[Chris142]

Originally Posted by tcp71
Misalignment on the pulley of the new pump?

It's flat. Nothing to misalign. The pulley is much wider than the belt.
Belt is where it should be.

 

[Chris142]

Looks like this. https://www.amazon.com/Gates-42291-...F8&pd_rd_i=B00498C566&pd_rd_r=2a

 

[Onetor]

Manuf defect? Just speculation!

 

[atikovi]

Originally Posted by Chris142
The belt was a top quality Gates green strip belt.


Made in China per chance?

 

[vw7674]

diesel fuel attacks & breaks down rubber.
maybe that belt got exposed to some.

 

[Chris142]

Originally Posted by vw7674
diesel fuel attacks & breaks down rubber.
maybe that belt got exposed to some.

Was not gooey at all.

 

[Dinoburner]

Did the belt get installed in the same direction of rotation?

 

[KGMtech]

I'd be looking for evidence of a critter that met its end....violently.

 

[Chris142]

Originally Posted by Dinoburner
Did the belt get installed in the same direction of rotation?

Yes. I did not remove it. I loosened it enough to slide the water pump out.

 

[spasm3]

Perhaps the old tensioner was weak and the belt walked off after revving it up.

 

[Chris142]

Originally Posted by KGMtech
I'd be looking for evidence of a critter that met its end....violently.

I did not see any furr. But thats a good possibility.

 

[Chris142]

Originally Posted by spasm3
Perhaps the old tensioner was weak and the belt walked off after revving it up.

I replaced it anyway. But the old tensioner was super stiff.took 2 people to hold it back.

 

[97K15004WD]

Any chance one of the other driven components is locked up or seizing? Maybe the A/C was engaged by the customer and it's seized?