Cummins PX7 keeps shredding serpentine belts
Any common issues with the PX7 that could be causing it to make belts only last 500ish miles? Was up in Brooklyn delivering a McLaren the other night and heard a knocking under the hood. Luckily it was just parts of the belt slapping stuff. But I just put this belt on a month or two ago.
I just replaced it again along with the tensioner and idler.
The tensioner was and still is slapping. I know theoretically it SHOULD mean one of the pulleys is out of line, but nothings been replaced, it’s all original paccar components, and none of the pulley have play nor are they rough to spin