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Home >> Audi >> 2021 >> S6 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger [DLZA,DKMB] >> 21 Turbocharger, Supercharger >> Charge Air System >> Charge Air Cooler, Removing And Installing >> Charge Air Cooler, Removing And Installing, 2.9L Engine >> Removing

Charge Air Cooler, Removing And Installing, 2.9L Engine: Removing

-- Pay attention to the guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Drain the coolant (refer to COOLANT, DRAINING AND FILLING ), place the container of the :VAS5014  or the :VAS6208  underneath.

-- Lift the clamp -1- and remove the left upper coolant hose from the radiator and push to the side.

GWWA10-12339Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamp -3- and disconnect the coolant hose.

-- Remove the left headlamp. Refer to HEADLAMP, REMOVING AND INSTALLING .

-- Remove the left front wheel housing liner. Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .

-- Remove the left auxiliary radiator. Refer to LEFT AUXILIARY RADIATOR, REMOVING AND INSTALLING .

-- Loosen the clamps -1 and 3- and remove the air duct hose.

GWWA21-11222Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -4-.

Fig 1: Electrical Compressor Bypass Door Valve -N731- Component Location
GWWA21-11418Courtesy of AUDI OF AMERICA, LLC

-- Remove the vacuum hose -2- at the same time to not damage it.

-- Loosen the hose clamp -3- and remove the coolant hose.

-- Remove the screw -1-.

-- Remove the bolts -arrows-.

GWWA21-11273Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamp -1- and remove the coolant hose.

-- Disconnect the connector -2- for the Charge Air Pressure Sensor -G31-.

GWWA21-11274Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamps -4- and remove the air duct hoses.

-- Loosen the clamps -3- and remove the coolant hoses.

-- Remove the bolts -arrows- and the coolant pipe -1-.

-- Disengage the charge air cooler with bracket on the longitudinal member and remove.

-- Remove the bolts -arrows- and remove the coolant pipe -2-.

GWWA21-11419Courtesy of AUDI OF AMERICA, LLC

-- Remove the vacuum hose -4- and free up and do not damage.

-- Disengage the charge air cooler -3- from the bracket -1- and remove.