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Home >> Audi >> 2012 >> S5 4.2, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1310 (Turbocharger, Supercharger [CABB, CABA, CABD, CAEA, CAEB, CDHB, CDNB, CDNC, CDHA, CDZA, CADA, CCUA, CFKA, CPMA, CAED, CPMB] (Cabriolet)) >> 21 Turbocharger, Supercharger >> Turbocharger >> Turbocharger, Removing And Installing >> Removing

Turbocharger, Removing And Installing: Removing

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-- Observe the guidelines for clean working conditions. Refer to appropriate service information. .

-- Remove the engine cover. .

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

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

-- Disconnect the coolant hose -arrow-.

Fig 1: Disconnecting Coolant Hose
GWWA21-10141Courtesy of AUDI OF AMERICA, LLC
NOTE:

For clarity the engine is not shown in the illustrations that follow.

Turbocharger Version 1: 

Fig 2: Identifying Crankcase Housing Ventilation
GWWA21-10319Courtesy of AUDI OF AMERICA, LLC

-- Remove the crankcase ventilation -arrows- from the turbocharger.

-- Remove the hose -1- from the turbocharger.

-- Remove the bolts -1 and 2- and move the oil supply line to the side.

Fig 3: Identifying Bolts
GWWA21-10316Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -3- and move the coolant line to the side.

Turbocharger Version 2: 

Fig 4: Identifying Bolts
GWWA21-10735Courtesy of AUDI OF AMERICA, LLC

-- Remove the crankcase ventilation -arrows- from the turbocharger.

-- Press the release button and remove the hose -2-

-- Loosen the hose clamp -1-. Remove the air duct pipe.

-- Remove the banjo bolts -1 and 2- and bolts -3- and then move the lines to the side.

Fig 5: Identifying Banjo Bolts -1 And 2- And Bolts -3-
GWWA21-10736Courtesy of AUDI OF AMERICA, LLC

Connector Bracket Version 2: 

Fig 6: Identifying Heated Oxygen Sensor & Connector
GWWA24-10993Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -arrow- for the Heated Oxygen Sensor -G39- and Oxygen Sensor Heater -Z19- and free up the wires.

Connector Bracket Version 3: 

Fig 7: Oxygen Sensor Harness Connector
GWWA24-11274Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -arrow- for the Oxygen Sensor after Catalytic Converter -G130- and free up the wires.

Continuation For All Vehicles: 

Fig 8: Identifying Heat Shield Components
GWWA21-10318Courtesy of AUDI OF AMERICA, LLC

-- Remove the heat shield -arrows-.

Fig 9: Front Exhaust Pipe Double Clamp
GWWA26-10742Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Risk Of Damaging The Couplings In The Front Muffler.

  • Do not bend couplings in front muffler more than 10°.

-- Loosen the threaded connections -arrows- and slide the clamping sleeves to the rear.

-- Slightly lower the front muffler and tie it to the crossbrace -arrow-.

Fig 10: Identifying Front Muffler Tied To Crossbrace
GWWA10-11109Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the threaded connection -1-, remove the screw -2- and remove the catalytic converter mounting.

Fig 11: Identifying Catalytic Converter
GWWA21-10310Courtesy of AUDI OF AMERICA, LLC

-- Remove the nuts -arrows- and push the catalytic converter to the rear.

Fig 12: Identifying Catalytic Converter Flange Nuts
GWWA21-10320Courtesy of AUDI OF AMERICA, LLC

All additional procedures are described. Refer to TURBOCHARGER .