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?