# CTE Resource Center - Verso - Diesel Equipment Technology III Task 1527822769

CTE Resource Center - Verso

Virginia’s CTE Resource Center

Inspect A/C system service ports (gauge connections).


Utilizing proper tooling, inspect ports for dye or leaks. Installing gauges, check fit of ports onto gauges.

Process/Skill Questions

  • What is the cause of dye or oil pooling on a service port?
  • Why are the ports identified with red and blue caps?