Left Timing Chain Cover, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Audi S8, 2015 Audi A8 Quattro, 2014 Audi S8, 2014 Audi A8 Quattro, and 2013 Audi S8. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the engine cover, refer to ENGINE COVER, REMOVING AND INSTALLING .

WARNING:

Fire hazards and risk of damage for a faulty engine cover.

The engine cover must be always be installed before the hood is closed.
The engine may neither be started nor driven without an engine cover.

-- Drain the coolant, refer to COOLANT, DRAINING AND FILLING .

-- Remove the left front muffler, refer to FRONT MUFFLER, REMOVING AND INSTALLING .

-- Remove the plenum chamber bulkhead, refer to OVERVIEW - BULKHEAD .

Vehicles with the Engine Codes CGTA/CTFA:

-- Loosen the clamps -arrows- and remove the left air guide pipe.

Fig 1: Identifying Left Air Guide Pipe Clamps

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Continuation for All Vehicles:

NOTE: Ignore -2 and 4-.

-- Remove the connector -1- for the Oxygen Sensor after Three Way Catalytic Converter -G130- -3- from the bracket and disconnect it. Free up the wire.

Fig 2: Identifying Oxygen Sensor After Three Way Catalytic Converter Connector And Bracket

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NOTE:

The catalytic converter for the cylinder bank 1 (right) is on the left in the vehicle.

Fig 3: Identifying Nuts

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-- Free up the wire for the Heated Oxygen Sensor -G39-.

-- Remove the nuts -arrows- from the cylinder bank 1 (right) and then remove the catalytic converter in the left of the vehicle, toward the rear.

-- Loosen the clamp -1- and remove the air guide hose.

Fig 4: Identifying Air Guide Hose, Clamp And Bolt

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-- Remove the bolt -2-.

-- Free up the vacuum line and press it toward the rear.

-- Remove the bolts -1 and 2-.

Fig 5: Identifying Bolts

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CAUTION:

Danger of causing damage to the coolant pipe.

Do not bend the coolant pipe.

-- Remove the rear upper coolant pipe from the right cover for the timing chain guard -arrow- and set it aside.

NOTE: The catalytic converter and the turbocharger support are removed to improve the clarity of the illustration.

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

Fig 6: Left Timing Chain Cover, Tightening Specifications and Sequence

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-- Push the mount -arrow- with the wire to the side.

-- Carefully remove the left cover for the timing chain from the bond.