Refrigerant Lines, Disconnecting From Front Expansion Valve And Reconnecting: 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.

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

-- Thoroughly clean all connections in expansion valve -D- and at refrigerant lines -B- and -C- and check for damage.

-- 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) .

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