Front Expansion Valve, Removing And Installing: Installing

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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 -D- for proper installation position and check the grommet in the plenum chamber rear panel for damage and proper installation.

-- Clean the connecting tubes -B- and -C- for the evaporator and check for damage.

-- Check that the retaining plate -A- is correctly positioned on the evaporator connecting tubes -B- and -C-.

Courtesy of AUDI OF AMERICA, LLC

-- Insert the O-ring seals -D- and -E- into the grooves from the connecting tubes -B- and -C- -arrows-.

-- Always clean the expansion valve and refrigerant lines around the connection area and check for damage.

-- Make sure the O-ring seals fit properly inside the grooves in the refrigerant line connections -B and C-.

-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit (R134a) or Working with A/C Service Station (R1234yf) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .

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