Operation and maintenance manual

QSB4.5 and QSB6.7 System Diagrams - Overview
Section D - System Diagrams Page D-1
System Diagrams - Overview
General Information
The following drawings show the flow through the engine systems. Although parts can change between different
applications and installations, the flow remains the same. The systems shown are:
Fuel System
Lubricating Oil System
Coolant System
Intake Air System
Exhaust System
Compressed Air System.
Knowledge of the engine systems can help you in troubleshooting, service, and general maintenance of your engine.