Title: Inspect DEF system.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Air Induction and Exhaust System

Inspection should include checking tanks, lines, gauge pump, and filter, in addition to

- checking the DEF level
- checking for leaks
- following manufacturer guidelines for the maintenance servicing of the DEF system.

ASE 3: I. Diesel Engines: I. Emission Controls (P-2)

Process/Skill Questions:

- What is the purpose of the DEF fluid?
- What safety and storage concerns are there with DEF?
- How is the DEF fluid tested?