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Home >> Audi >> 2022 >> S8 >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Cylinder Head, VALVETRAIN Servicing - 6-Cylinder 2.9L; 3.0L 4V TFSI Ea839 Engine) >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Cover >> Timing Chain Cover, Removing And Installing >> Upper Timing Chain Covers, Removing And Installing >> Removing

Upper Timing Chain Covers, Removing And Installing: Removing

WARNING: This page is about a different car, the 2024 Audi A8 Quattro, 2023 Audi A8 Quattro, and 2022 Audi A8 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the rear high pressure pipe. Refer to HIGH PRESSURE PIPE, REMOVING AND INSTALLING .

Cylinder Bank 1 (Right):

GWWA15-12051Courtesy of AUDI OF AMERICA, LLC

-- If installed, remove the Coolant Recirculation Pump -V50-. Refer to ELECTRIC COOLANT PUMP, REMOVING AND INSTALLING .

-- Disconnect the connector -2- for the Camshaft Adjustment Valve 1 -N205- and free up the wire.

-- Remove the double bolts -2- and bolts -1- and remove the bracket for the After-Run Coolant Pump -V51-.

GWWA19-12538Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts in the following sequence: -8 to 1-.

Fig 1: Cylinder Bank 1 Timing Chain Cover (Right) - Tightening Sequence
GWWA15-11164Courtesy of AUDI OF AMERICA, LLC

Cylinder Bank 2 (Left):

GWWA15-12053Courtesy of AUDI OF AMERICA, LLC

-- If installed, unclip the bracket -arrow- using the vacuum hose from the timing chain cover and push to the side.

-- Open the heat shield boot and disconnect the connector -arrow- on the Oil Pressure Switch -F22-. (shown on a 3.0L engine).

GWWA17-11097Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1- on the Oil Temperature Sensor -G8-. (shown on a 3.0L engine).

GWWA17-11099Courtesy of AUDI OF AMERICA, LLC

-- Free up the wiring harness from the timing chain cover.

-- Remove the bolts in the following sequence: -8 to 1-.

Fig 2: Cylinder Bank 2 Timing Chain Cover (Left) - Tightening Sequence
GWWA15-11978Courtesy of AUDI OF AMERICA, LLC

Continuation for Both Sides: 

-- Carefully loosen and remove the timing chain cover from the bond.

CAUTION:

Risk of destroying the engine by small parts inadvertently entering with the upper timing chain cover removed.

- Cover the timing chain opening with a clean cleaning cloth.