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Home >> Audi >> 2020 >> SQ8 Premium Plus >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (3 Of 3) >> 87 Air Conditioning >> Refrigerant Circuit >> Refrigerant Lines, Removing And Installing, From Connection Point To Rear Expansion Valve >> Installing

Refrigerant Lines, Removing And Installing, From Connection Point To Rear Expansion Valve: Installing

GWWA87-11917Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal and note the following:

-- Clean the refrigerant lines connections on the connection from the refrigerant pipes -D- and on the refrigerant lines -A and F- for damage.

-- Replace the O-ring seals -B and E- on the refrigerant line connections -D-. Refer to the Parts Information for the correct version.

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

-- Make sure the O-rings are seated correctly on the connection for refrigerant pipes.

-- Insert the refrigerant lines -A and F- in the connection for refrigerant pipes -D-.

-- Install the bolt -G-.

-- 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 (R134a) or Working with A/C Service Station (R1234ya) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .

-- Install the remaining removed components.

-- Switch the ignition on.

-- Retrieve the Front A/C Display Control Head -E87- DTC memory and delete any displayed faults using the Vehicle Diagnostic Tester in the "Guided Fault Finding"  function.

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