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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head, VALVETRAIN (Servicing - 6-Cylinder 2.9L; 3.0L 4V TFSI Ea839 Engine) >> 15 Cylinder Head, VALVETRAIN >> Cylinder Head >> Cylinder Head, Removing And Installing >> Cylinder Head Bank 1 (Right), Removing, 2.9L Engine >> Procedure

Cylinder Head Bank 1 (Right), Removing, 2.9L Engine: Procedure

-- Remove the cylinder bank 1 (right) camshaft housing. Refer to CYLINDER BANK 1 (RIGHT) CAMSHAFT HOUSING, REMOVING AND INSTALLING .

-- Remove the right turbocharger. Refer to TURBOCHARGER, REMOVING, CYLINDER BANK 1 (RIGHT), 2.9L ENGINE .

-- Remove the front coolant pipe. Refer to COOLANT PIPES, REMOVING AND INSTALLING .

-- Remove the right intake manifold. Refer to INTAKE MANIFOLD, REMOVING AND INSTALLING .

-- Bring the engine support and engine mount into the installation position and install the bolts all the way.

-- Remove the extractor. Refer to ENGINE, SUPPORTING IN INSTALLATION POSITION .

-- Remove the bolt -1- and remove the bleeder line -2- from the cylinder head.

Fig 1: Cylinder Bank 1 (Right) Coolant Ventilation Line, Installing
GWWA15-12131Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1- for the Oxygen Sensor 1 After Catalytic Converter -GX7- and free up the wire.

GWWA24-11785Courtesy of AUDI OF AMERICA, LLC

-- Remove the heated oxygen sensor.

-- Remove the bolts -2- and the remove the chain tensioner -1-.

GWWA15-12002Courtesy of AUDI OF AMERICA, LLC

-- Remove the guide pin -5-.

-- If the cylinder head is removed with the engine installed: push the guide rail -4- upward and secure using a cable tie to the camshaft timing chain -3- as shown.

-- Remove the bolts -arrows- and -9-.

Fig 2: Cylinder Head Bolts Loosening Sequence
GWWA15-12163Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts and the cylinder head carefully.

-- Lay the cylinder head on a soft surface, such as foam.

-- Seal the open channels of the intake and exhaust tract with a clean cleaning cloth or with completely clean plugs from the Engine Bung Set :VAS 6122  .