Serpentine belt for Cummins 8.3

[kendelrio]

All-
It just occurred to me to make sure I have a spare serpentine belt. After checking the 5 ton parts list, it isn't listed.

Does anyone have a crossover number for NAPA, O'Reillys etc?

 

[simp5782]

All-
It just occurred to me to make sure I have a spare serpentine belt. After checking the 5 ton parts list, it isn't listed.

Does anyone have a crossover number for NAPA, O'Reillys etc?

It is.

Row 360. All A2 specific parts are at the bottom of the spreadsheet below the A2 only banner

 

[kendelrio]

It is.

Row 360. All A2 specific parts are at the bottom of the spreadsheet below the A2 only banner

Ah. My bad. Thank you.

 

[Jbulach]

Good time to check your damper as well.

 

[m715mike]

I recommend the one on the right.

 

[Steelreaper80]

Good time to check your damper as well.

Do they go bad often and what signs are there to look for if they do?

 

[Russ Knight]

The length is different if you've converted to a modern alternator.

 

[kendelrio]

The length is different if you've converted to a modern alternator.

I have, but @74M35A2 was kind enough to include bar stock to allow me to tighten the belt.

 

[Jbulach]

Do they go bad often and what signs are there to look for if they do?

Fairly common, the rubber degrades and the outer section walks out of line, or off
Then your belt looks like the one in post #5
Some start to make noise before the carnage starts.

 

[frank8003]

Here is the part that gives the serpentine belt its no slip and longevity qualities.
Belt tensionors fail in all the ways a spring loaded rotating thing fail, subtly/insidiously.

Just cross reference this one and or buy install it to make your things as new. Less problems that way.

https://www.napaonline.com/en/p/NBH38513

25-080680 NAPA AUTOMOTIVE Replacement Serpentine Poly V Belt

Buy V-Belt Guys 25080685 NAPA AUTOMOTIVE Micro Rib Poly Replacement V-Belt! Quick and Easy Timing Belt Cross Reference. Great Deals Fast Shipping!

www.vbeltguys.com

 

[xGROMx]

I had an issue of my tensioner hitting the water pump clutch. I replaced with a Gates K080680HD, It was close but didn't tap it anymore. Just now replaced the Alternator with a newer style from Jim Cox and now the belt is too loose and the tensioner is riding the clutch.

The new alt came with a longer lower bracket to compensate size differences. My questions now fall on what other components could make the belt seem too long, wrong idler size, wrong tentioner size. A lot of hands have been on it before me.

Going to look for a size smaller belt in the morning, if that isn't an option going to find a piece of stock and lengthen the lower bracket a bit.

Any suggestions?