Improvised Tools
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Audi S6, 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi S6, and 2017 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This list outlines the testers, tools and materials required for expert refrigerant circuit repair work.
Charging Hose with Connection for Workshop Compressed-Air System
A - Charging hose 5/8" - 18 UNF** (version with large inner diameter)
B - Connection for workshop compressed-air system ** (always use filter)
** Tools and materials, which are commercially available.