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Home >> Audi >> 2017 >> A7 Quattro Competition >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (4.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CEUC & CRDB) >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Cover >> Timing Chain Cover, Removing And Installing >> Left Timing Chain Cover, Removing And Installing >> Removing

Left Timing Chain Cover, Removing And Installing: Removing

WARNING: This page is about a different car, the 2015 Audi S7, 2015 Audi RS 7, 2014 Audi S7, 2014 Audi RS 7, and 2013 Audi S7. 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 Bulkhead .

-- Empty the coolant circuit, refer to A/C System with Refrigerant R134a.

-- Remove the bolt -arrow- and press the refrigerant line toward the rear.

Fig 1: Identifying Refrigerant Line Bolt
GWWA15-11362Courtesy of AUDI OF AMERICA, LLC
NOTE:

Ignore -items 2 and 4-.

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

Fig 2: Identifying Connectors
GWWA24-11124Courtesy of AUDI OF AMERICA, LLC
NOTE:

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

-- 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.

Fig 3: Identifying Nuts -Arrows-
GWWA26-11198Courtesy of AUDI OF AMERICA, LLC

-- Remove the nut -arrow- and free up the clamp.

Fig 4: Identifying Nuts -Arrows-
GWWA15-11533Courtesy of AUDI OF AMERICA, LLC

-- Remove the nut -arrow- and then push the mount -1- with the wire toward the rear.

Fig 5: Identifying Mount Nut
GWWA15-11363Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1 and 2-.

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 in direction of -arrow- and set it aside.

Fig 6: Identifying Bolts
GWWA19-11417Courtesy of AUDI OF AMERICA, LLC
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-.

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

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

Fig 7: Left Timing Chain Cover Tightening Sequence
GWWA15-11216Courtesy of AUDI OF AMERICA, LLC
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