Title: Remove and inspect AC system mufflers, hoses, lines, fittings, O-rings, seals, and service valves; determine needed action.
Course: Automotive Technology III (20104-III) > Section: Heating, Ventilation, and Air Conditioning (HVAC): Refrigeration System Component Diagnosis and Repair

Procedure should include

- using proper refrigerant recovery equipment (required)
- performing a visual inspection
- disposing of removed O-rings and seals
- lubricating new O-rings and seals prior to installation
- replacing additional components, according to service materials and manufacturer guidelines.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
VII. Heating, Ventilation, and Air Conditioning (HVAC)
B. Refrigeration System Component Diagnosis and Repair
Task 6

Process/Skill Questions:

- What tools and equipment are used to remove AC lines?
- What procedures are used to service AC lines?
- What safety and environmental procedures should be followed when servicing AC systems?