Refrigerant Lines In Plenum Chamber, Removing And Installing: Installing

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Install in reverse order of removal and note the following:

Coat the O-ring seals lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
Install the refrigerant lines stress-free.

-- Always clean the expansion valve, pass-through, and refrigerant lines on the connection area and check them for damage.

-- Check the support ring -G- for proper installation position and check the grommet in the plenum chamber rear panel for damage and proper installation.

-- Insert the refrigerant lines -C and D- to the heat exchanger after installing the inner heat exchanger -F- and service connections -B and H- in the bracket.

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the nut -A-.

-- Check the routing of the refrigerant lines after attachment. They must be inserted in the provided brackets in a tension-free manner and must not come in contact with other components.

-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit or Working with A/C Service Station (1 Of 2) / Working with A/C Service Station (2 Of 2) .

-- Switch the ignition on.

-- Start the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT .