Cat C15 Fan Belt Diagram Jun 2026

Spin the idler and tensioner pulleys by hand. If they feel "crunchy" or have side-to-side play, replace them now.

– Your belt will have a number like 197-7850 (common for standard on-highway C15). Search that number + "routing" in the Cat Parts Store or SIS (Service Information System) . cat c15 fan belt diagram

The Caterpillar C15 is a legendary workhorse, known for its reliability in heavy-duty trucks and equipment. However, even the most robust engine depends on a simple piece of reinforced rubber to keep things moving: the fan belt (or serpentine belt). Spin the idler and tensioner pulleys by hand

Do rely on memory alone. Use these three reliable methods: cat c15 fan belt diagram

A spring-loaded arm that maintains constant pressure on the belt.