C15 Serpentine Belt Diagram | 2005 Cat

The grooved side must face grooved pulleys. If you flip the belt, it will slip on the alternator and A/C, causing charge and cooling issues.

Cat recommends replacing the tensioner every other belt change (approx. 500,000 miles). 2005 Cat C15 Serpentine Belt Diagram

Loose threads on the edges indicate an alignment issue with one of the pulleys. The grooved side must face grooved pulleys

The serpentine belt system on the 2005 Cat C15 engine consists of the following components: 2005 Cat C15 Serpentine Belt Diagram