Exhaust Gas Recirculation (EGR) System

The Exhaust Gas Recirculation (EGR) system recirculates cooled exhaust gas to engine intake to reduce NOx emissions. See the maintenance inspection schedule.

The EGR system should be inspected and cleaned (if necessary) every 3,000 hours.

Important Always wear appropriate Personal Protective Equipment (PPE) when cleaning the EGR system. This includes safety glasses, rubber gloves, and a respirator.

  1. Remove the EGR pipe from between the EGR cooler and the EGR valve.

  2. Inspect the EGR pipe and other components for carbon deposits and clean as necessary.

  3. Reinstall the EGR pipe (and other components if removed) and only use new gaskets.

  1. Remove the EGR tube from between the EGR cooler and the exhaust manifold.

  2. Clean the carbon deposits from inside the EGR tube.

  3. Reinstall EGR tube and make sure to use a new O-ring and gasket.

Parent topic: Engine Maintenance