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Home >> Audi >> 2018 >> A4 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger [CVKB,DBPA,CWNA,CVLA,DEMA,DHDA,DKUA] >> 21 Turbocharger, Supercharger >> Turbocharger >> Turbocharger, Removing And Installing >> Removing

Turbocharger, Removing And Installing: Removing

NOTE:

Follow the guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

Preliminary work may be required depending on the model. Refer to TURBOCHARGER .

-- Remove the noise insulation. Refer to NOISE INSULATION .

-- Drain the coolant. Refer to COOLANT SYSTEM/COOLANT .

-- Loosen the hose clamp -arrow-, remove the air duct hose and pivot it to the side.

GWWA21-11086Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the nut -2- from below.

Fig 1: Identifying Turbocharger Catalytic Converter & Nuts
GWWA26-11207Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
NOTE:

The nuts -1- will be removed later.

-- Remove the nut -arrow- and move the bracket -1- and wiring harness to the side.

GWWA10-12052Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolt -1- and then remove the oil return line.

GWWA21-10720Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolt -2-.

-- Remove and disconnect the connector -1- for the Heated Oxygen Sensor -G39- -2- from the bracket.

GWWA24-10925Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolt -arrow- and remove the crankcase ventilation from the turbocharger.

GWWA21-10717Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -2- for the Charge Air Pressure Actuator -V465-.

GWWA15-11380Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -1- for the Turbocharger Recirculation Valve -N249-.

-- Remove the nuts -1- from above, and push the catalytic converter toward the rear.

Fig 2: Identifying Turbocharger Catalytic Converter & Nuts
GWWA26-11207Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove bolts -arrows- and then remove the heat shield.

GWWA21-10715Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolt -1- and remove the coolant return line.

GWWA21-10716Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolt -2- and the oil supply line.

-- Remove the nuts -arrows-.

-- Remove the turbocharger from the stud bolts in the direction of -arrow-.

GWWA21-10721Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Have a second technician hold the turbocharger.

-- Remove the bolt -1- and the coolant supply line -2-, to do so push the heat shield to the side.

-- Remove the turbocharger upward.