LEMON Manuals: Even more car manuals for everyone
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 >> Check Valves In Refrigerant Circuit, Removing And Installing >> Check Valve In Refrigerant Line From Inner Heat EXCHANGER, Removing And Installing >> Removing

Check Valve In Refrigerant Line From Inner Heat EXCHANGER, Removing And Installing: Removing

-- Initiate the A/C system basic setting through the Thermal Management Control Module -J1024- and open the power-activated valves through the stored routine "Extract, evacuate and fill the refrigerant circuit" using the Vehicle Diagnostic Tester in the "Guided Fault Finding"  function.

-- Discharge the refrigerant circuit. Refer to Refrigerant Circuit (R134a) (Refrigerant R134a Servicing, Refrigerant Circuit, Working with A/C Service Station) or Working with A/C Service Station (R1234ya) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .

-- Remove the left front wheel housing liner. Refer to OVERVIEW - FRONT WHEEL HOUSING LINER (for accessibility to the connection points shown).

GWWA87-11879Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Danger or frostbite due to refrigerant coming out under pressure.

Frostbite on the skin and other parts of the body is possible.

- Wear safety gloves.

- Wear protective eyewear.

- Evacuate or drain refrigerant and open the refrigerant circuit immediately.

- If more than 10 minutes elapse after extracting or draining the refrigerant and the refrigerant circuit was not opened, extract or drain the refrigerant again. Pressure develops in the refrigerant circuit due to evaporation.

-- Remove the bolt -C-.

-- Remove the refrigerant line -B- from the connection for the inner heat exchanger -A-.

-- Remove the bolts -5-.

Fig 1: Exploded View Of Check Valve
GWWA87-12180Courtesy of AUDI OF AMERICA, LLC

-- Remove the refrigerant line -4- from the connection to the inner heat exchanger -A-.

-- Remove the check valve -3-.