Title: Identify the causes of HVAC air and mechanical control problems.
Course: Diesel Equipment Technology III (20107-III) > Section: HVAC: Servicing the Air/Mechanical Operating Systems and Related Controls

Identification should include

- visually examining the system for leaks
- testing the controls to ensure their operation.

Process/Skill Questions:

- How would a failed sleeper coolant control valve affect the cooling system?
- What effect would a worn belt or worn-out pulley have on a compressor?