Refrigerant Lines, Removing And Installing, From Rear Expansion Valve To Evaporator In Rear Heater And A/C Unit: Installing

Courtesy of AUDI OF AMERICA, LLC

Install in the reverse order of removal while noting the following:

-- Clean the adhesive surface on the body using Cleaning Solution. Refer to the Parts Information.

TIP

• Bracket -G- is bonded with double-sided adhesive tape on the floor plate of the center tunnel. The bracket remains in its position by this bonding when removing the heater and A/C unit. The heat shield from the center tunnel does not need to be removed to install the rear heater and A/C unit.

-- Clean the refrigerant line connection on the connection of the evaporator pipe -D- in the rear heater and A/C unit and on the refrigerant lines -A and B- and check them for damage.

-- Replace the O-ring seals -C and E-. Refer to the Parts Information for the version.

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

-- Ensure that the O-ring seals are seated properly on the connections of refrigerant lines -A and B-.

-- Insert the refrigerant lines -A and B- in the connections of the evaporator -D-.

-- Remove the protective film -F- carefully from the adhesive tapes.

-- Install the bracket -G- on the center tunnel floor panel.

-- Install the nut -H-.

-- Remove the rear expansion valve. Refer to REAR EXPANSION VALVE, REMOVING AND INSTALLING .

-- 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 .

-- Install the remaining removed components.

-- Switch the ignition on.

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