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Home >> Audi >> 2012 >> S4 Automatic DCT Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 3.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CCBA, CGXC & CTUB (Sedan) >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Cover >> Left And Right Timing Chain Cover, Removing And Installing >> Removing

Left And Right Timing Chain Cover, Removing And Installing: Removing

Fig 1: Engine Covers
GWWA10-11070Courtesy of AUDI OF AMERICA, LLC
NOTE:

When installing, bring all cable ties back to same positions.

-- Remove the rear engine cover -2- upward.

-- Remove the affected Secondary Air Injection (AIR) combination valve: left refer to LEFT COMBINATION VALVE, REMOVING AND INSTALLING , right refer to RIGHT COMBINATION VALVE, REMOVING AND INSTALLING .

Left Timing Chain Cover

Fig 2: Disconnecting Connector To Fuel Injectors
GWWA24-10681Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1- and move the bracket together with the wiring harnesses to the side.

NOTE:

Ignore items -2 and 3-.

-- Remove the bolts -1 through 8-.

Fig 3: Left Timing Chain Cover Bolts
GWWA13-10254Courtesy of AUDI OF AMERICA, LLC

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

Right Timing Chain Cover

Fig 4: Identifying Air Duct Pipe
GWWA24-10348Courtesy of AUDI OF AMERICA, LLC

-- Free up the fuel hose -1- and the Evaporative Emission (EVAP) canister hose -2- on the air duct pipe.

-- Remove the vacuum hose -3- from the air guide pipe connection.

-- Remove the air guide pipe by loosening the hose clamp -4- and opening the clips -arrows-.

-- Remove the bolts -3- and move the bracket together with the connectors to the side.

Fig 5: Disconnecting Connector From Oxygen Sensor
GWWA24-10682Courtesy of AUDI OF AMERICA, LLC
NOTE:

Ignore items -1 and 2-.

-- Remove the bolts -1 through 8-.

Fig 6: Right Timing Chain Cover Bolts
GWWA13-10255Courtesy of AUDI OF AMERICA, LLC

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