Title: Check the engine exhaust system for leaks, proper routing, and damaged or missing components including the exhaust gas recirculation (EGR) system and after-treatment devices, if equipped.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing Air Induction and Exhaust System

Checking should include a visual inspection to look for

- exhaust gas leaks
- interference issues between the exhaust system and the cab or chassis
- leaks or loose fittings on the EGR
- problems with wires and fittings on the after-treatment system

and recording the findings.

Process/Skill Questions:

- What is the purpose of the EGR system?
- What can cause leaks or loose fittings on the EGR?