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Home >> Audi >> 2024 >> S3 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head, VALVETRAIN (4-Cylinder Direct Injection 2.0L 4V TFSI Engine) (DSFA) >> 15 Cylinder Head, VALVETRAIN >> Chain Drive >> Camshaft Timing Chain, Removing And Installing >> Removing

Camshaft Timing Chain, Removing And Installing: Removing

-- Remove the bearing bracket. Refer to BEARING BRACKET, REMOVING AND INSTALLING .

GWWA15-12409Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Risk of damaging the engine by the timing mechanism skipping.

- Only let the engine turn in the direction of engine rotation.

-- Turn the crankshaft on the vibration damper using the Wrench - 21mm:T40263  -6-, Adapter:T40314  -1- and 24 mm socket adapter until the camshafts is at "TDC".

-- Remove the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER, REPLACING .

-- Check the "TDC point" again.

-- Disengage the tension spring wire clip -3- from the oil pan upper section -arrow-.

GWWA15-12340Courtesy of AUDI OF AMERICA, LLC

-- Remove the guide pin -2- and the chain tensioner.

-- Remove the drive chain -1- for the oil pump from the three-layer chain sprocket and let hang at the Assembly Tool:T10531/6  .

-- Remove the bolts -arrows-.

Fig 1: Identifying Bolts
GWWA15-11390Courtesy of AUDI OF AMERICA, LLC

-- Install the Chain Tensioner Lever:T40243  on the cylinder head -lower arrows-.

Fig 2: Identifying Lever T40243 -Arrows-, Installation
GWWA15-11391Courtesy of AUDI OF AMERICA, LLC

-- Press the chain tensioner circlip -1- together and hold it.

-- Slowly press and hold the Chain Tensioner Lever:T40243  in the direction of the -arrow-.

TIP:

The chain tensioner is lubricated with oil and can only be pushed back slowly by applying constant pressure.

-- Lock the chain tensioner with the Locking Tool:T40435  .

GWWA15-12341Courtesy of AUDI OF AMERICA, LLC

-- Remove the Chain Tensioner Lever:T40243  .

-- Install the Camshaft Lock:T40271/2  on the cylinder head.

GWWA15-12342Courtesy of AUDI OF AMERICA, LLC

-- Push the fixation in the splines of the chain sprocket in the direction of -arrow B-.

-- If required, turn the intake camshaft with the Assembly Tool:T40427  slightly back and forth in the direction of -A arrows-.

-- Install the Camshaft Lock:T40271/1  on the cylinder head.

GWWA15-12343Courtesy of AUDI OF AMERICA, LLC

-- Hold the exhaust camshaft using the Assembly Tool:T40427  . Remove the guide pin -1- and remove the tensioning rail -2- downward.

-- Turn the exhaust camshaft clockwise in the direction of -arrow A- again until the Camshaft Locks:T40271/1  can be pushed in the chain sprocket splines in the direction of -arrow B-.

-- Release the retainer -arrow- with a screwdriver and push the guide rail -1- off toward the front.

Fig 3: Removing Guide Rail
GWWN15-10962Courtesy of AUDI OF AMERICA, LLC

-- Remove the guide pin -1- and the guide rail -2-.

GWWA15-11717Courtesy of AUDI OF AMERICA, LLC

-- Remove the camshaft timing chain from the camshaft sprockets and remove downward.

CAUTION:

Risk of destroying the engine by collisions of the valves and the piston crowns.

- If the camshaft timing chain has been removed, then do not turn the crankshaft anymore.