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Home >> Audi >> 2017 >> A7 Quattro Competition >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Exhaust System & Emission Controls System (Service Information - 4.0L - CEUC, CRDB, CTGE, CWUB, CWUC)) >> 26 Exhaust System, Emission Controls >> Emissions Control >> Catalytic Converter, Removing And Installing >> Removing

Catalytic Converter, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Audi S7, 2018 Audi RS 7, 2017 Audi S7, 2017 Audi RS 7, and 2016 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the plenum chamber bulkhead. Refer to BULKHEAD . .

-- Remove the left and right front mufflers. Refer to FRONT MUFFLER, REMOVING AND INSTALLING .

-- Remove the Heated Oxygen Sensor 2 -G108-. Refer to Heated Oxygen Sensor 2 -G108 - / Oxygen Sensor after Three Way Catalytic Converter -G130-, REMOVING AND INSTALLING .

-- 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.

GWWA24-11124Courtesy of AUDI OF AMERICA, LLC
NOTE:

Ignore items -2 and 4-.

-- Remove the bolt -2- from the suspended mount for the catalytic converter on the left side in the vehicle.

GWWA26-11245Courtesy of AUDI OF AMERICA, LLC
NOTE:

The illustration shows the installed position by a s-tronic transmission 0B5.

Ignore item -1-.

-- Remove the bolt -arrow- from the suspended mount on the right side in the vehicle.

GWWA26-11246Courtesy of AUDI OF AMERICA, LLC
NOTE:

The illustration shows the installed position by a DSG transmission 0B5.

Catalytic Converter For Cylinder Bank 2: 

GWWA10-11377Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows- and the right heat shield -1-.

-- Remove the bolts -arrows- and remove the right drive axle heat shield.

GWWA37-10841Courtesy of AUDI OF AMERICA, LLC

-- Release the locking mechanism in direction of -arrows-, and free up the wires to disconnect and remove the connectors from one another and out of the mount:

GWWA24-11001Courtesy of AUDI OF AMERICA, LLC

2 - For Oxygen Sensor 2 after Catalytic Converter -G131-

1 - For Heated Oxygen Sensor -G39-

Continued For Both Sides 

GWWA26-11198Courtesy of AUDI OF AMERICA, LLC

-- 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.

-- Remove the nuts -arrows- from the cylinder bank 2 (left) and then remove the catalytic converter on the right in the vehicle, toward the rear.

GWWA26-11199Courtesy of AUDI OF AMERICA, LLC

-- First remove the catalytic converter on the left side of the vehicle and then remove the catalytic converter on the right side.