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Home >> Audi >> 2016 >> A4 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 1191 (Cylinder Head, VALVETRAIN [CAUA] (Coupe)) >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Cover >> Timing Chain Cover, Removing And Installing >> Right Timing Chain Cover, Removing And Installing >> Removing

Right Timing Chain Cover, Removing And Installing: Removing

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2009 Audi S5, and 2008 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

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

-- Remove the right front muffler. Refer to FRONT MUFFLER, REMOVING AND INSTALLING .

-- Remove the tower brace. Refer to TOWER BRACE, REMOVING AND INSTALLING .

Fig 1: Identifying Bolts, Nuts And Tower Brace
GWWA40-10127Courtesy of AUDI OF AMERICA, LLC

-- Remove the plenum chamber bulkhead. Refer to LOCK CARRIER .

-- Remove the Heated Oxygen Sensor -G39- -1-. Refer to HEATED OXYGEN SENSOR -G39- /OXYGEN SENSOR AFTER THREE WAY CATALYTIC CONVERTER -G130-, REMOVING AND INSTALLING, CYLINDER BANK 1 .

Fig 2: Component Location: Cylinder Bank 1 (right) Oxygen Sensors
GWWA24-10274Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector from the bracket:

2 - For Oxygen Sensor after Three Way Catalytic Converter -G130-

NOTE:

Ignore items -3 and 4-.

The Installation Location Is Shown With The Engine Removed.

-- Remove the nuts -arrows- using :T40220  .

Fig 3: Identifying Nuts And Bolt, Removal
GWWA26-10537Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -1-, remove the right catalytic converter and lay it to the side.

NOTE:

The Installation Location Is Shown With The Engine Removed.

-- Free up the fuel line and the line to the Evaporative Emission (EVAP) canister on the air guide pipe.

Fig 4: Disconnecting Connector On Mass Airflow (MAF) Sensor
GWWA10-10847Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1- from the Mass Airflow Sensor -G70-.

-- Disconnect the vacuum line -3- from the air guide pipe.

CAUTION:

Risk Of Violating Emissions Legislation On USA Vehicles.

  • Do not open hose connection -2- !

-- Lay aside air guide pipe with connected crankcase ventilation hose -2- by loosening hose clamp -4- and opening clips -arrows-.

-- Disconnect the vacuum line -1-.

Fig 5: Identifying Secondary Air System Components
GWWA10-10625Courtesy of AUDI OF AMERICA, LLC

-- Remove the air filter housing and disconnect the electrical connector -2- on the rear side at the Intake Air Switch-Over Valve -N335-.

-- Remove hose -3- from the secondary air system.

-- Disconnect the coolant hose by lifting the retaining clamps -2- and loosening the hose clamp -1- on the coolant tube.

Fig 6: Identifying Coolant Hose From Radiator And Right Coolant Pipe, Removal
GWWA19-10521Courtesy of AUDI OF AMERICA, LLC

-- Remove the nuts -arrows- and move the vacuum pump -1- with the lines connected to the side.

Fig 7: Identifying Nuts -Arrows- & Move Vacuum Pump -1- With Lines Connected To Side
GWWA15-10487Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1 and 2- and the coolant hose -arrow-.

Fig 8: Identifying Bolts And Coolant Hose, Removal
GWWA19-10570Courtesy of AUDI OF AMERICA, LLC

-- Remove the right coolant pipe from the coolant connections and lay it aside.

-- Remove the bolts -1 and 2- and loosen the hose clamp -arrow-.

Fig 9: Identifying Bolts And Coolant Connection, Removal
GWWA19-10571Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the coolant connection pieces leading to the right side.

-- Remove the vacuum hose -5- (if equipped) from the Secondary Air Injection (AIR) combination valve.

Fig 10: Identifying Right Secondary Air Injection (Air) Combination Valve
GWWA26-11141Courtesy of AUDI OF AMERICA, LLC

-- Remove the AIR hose -4- by pressing the release buttons.

-- Remove the bolts -1 and 2- and remove the secondary air injection combination valve.

NOTE:

Ignore item -3-.

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

-- Carefully remove the right timing chain guard from the bond and the bracket -arrow- for the heated oxygen sensor connectors.

Fig 11: Right Timing Chain Cover Tightening Sequence
GWWA15-10486Courtesy of AUDI OF AMERICA, LLC