6.7 Cummins Belt Diagram: How to Identify the Right Routing
6.7 Cummins belt diagram: how to identify the right routing. A 6.7 Cummins belt diagram helps you find the correct belt path fast. But the right diagram must match the engine in front of you—pulley layout, alternator setup, and A/C configuration all change the routing. Start by counting the pulleys and identifying the main driven parts. Grooved pulleys take the ribbed side of the belt; smooth pulleys take the back side. Route the fixed path first, leave the tensioner for last. After installation, check every pulley to confirm the belt is seated fully. Squeal, flutter, or walking to one edge means the routing is wrong. Match the diagram to your actual setup, not just the engine name.












