Camshaft Timing Chain, Removing And Installing: Installing

Courtesy of AUDI OF AMERICA, LLC

Requirements:

The crankshaft is at "TDC" ; the V-shaped cut-out on the three-layer chain sprocket points in an imaginary vertical line -arrows- centered between the camshaft chain sprockets.
Three-layer chain sprocket locked with the : T10531/2 .

Camshaft chain sprockets locked at "TDC" using the : T40271/1 and : T40271/2 .

Courtesy of AUDI OF AMERICA, LLC
The marks -arrows- must be positioned opposite each other.

-- Engage the camshaft timing chain with the painted links -arrows- on the camshaft pins as shown.

Fig 1: Camshaft Timing Chain And Camshaft Sprocket

Courtesy of AUDI OF AMERICA, LLC

-- Camshaft timing chain on intake camshaft; mount the exhaust camshaft and the three stage chain sprocket.

Fig 2: Camshaft Timing Chain And Intake Camshaft

Courtesy of AUDI OF AMERICA, LLC

The painted chain links must align with the markings on the chain sprockets -arrows-.

-- Insert the glide rail -2- and tighten the guide pin -1-.

Courtesy of AUDI OF AMERICA, LLC

-- Insert the guide track -1- and tighten the bolts -arrows-.

Courtesy of AUDI OF AMERICA, LLC

The help of a second technician is necessary for the following step.

Courtesy of AUDI OF AMERICA, LLC

-- Lock the pretension of the exhaust camshaft using the : T40266 or : T10567 in the direction of -arrow A- and pull the : T40271/1 from the chain sprocket splines in direction of -arrow B-.

-- Remove the exhaust camshaft in the direction of -arrow C- until the timing chain touches the glide rail -3-.

-- Hold the camshaft in this position, insert the tensioning rail -1- and tighten the guide pin -2-.

-- Remove the : T40271/1 .

-- Lock the intake camshaft pretension using the : T40266 or : T10567 in the direction of -arrow A-, pull the : T40271/2 from the chain sprocket splines in direction of -arrow B- and bring the camshaft into the rest position.

Courtesy of AUDI OF AMERICA, LLC

-- Remove the : T40271/2 .

-- Install the bolts -arrows- and tighten them. Tightening specification -item ) OVERVIEW - CYLINDER HEAD - List Item: Bolt.

Fig 3: Identifying Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Coat the holes -arrows- with engine oil.

Courtesy of AUDI OF AMERICA, LLC

-- Check if the adapter sleeve -1- is installed.

-- Carefully attach the bearing mount, without tilting.

Fig 4: Loosening Sequence Of Control Valve

Courtesy of AUDI OF AMERICA, LLC

-- Install the bolts -1 to 6- all the way by hand.

-- Remove the : T40267 .

Fig 5: Securing Chain Tensioner With T40267

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bearing bracket bolts. Refer to Figure.

-- Install the oil pump chain.

Fig 6: Identifying Chain Tensioner

Courtesy of AUDI OF AMERICA, LLC

-- Insert the chain tensioner -2- and tighten the guide pin -1-.

-- Remove the : T40011 . At the same time wire clip must make contact in the opening on the oil pan upper section -arrow-.

-- Checking adjustment:

Fig 7: Identifying Painted Chain Links Must Line Up With Markings On Chain Sprockets

Courtesy of AUDI OF AMERICA, LLC

The painted chain links must align with the markings on the chain sprockets -arrows-.

-- Install the control valves -item ) OVERVIEW - CAMSHAFT TIMING CHAINS - List Item: Control Valve.

Fig 8: Identifying Assembly Tool - Turning Over Tool T10531/3

Courtesy 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.

-- Install the : T10531/4 and the : T10531/3 .

-- To ensure that the vales do not make contact when starting, carefully rotate the engine at least two full revolutions.

TIP:

Due to the ratio, the painted chain links no longer match up after the engine has been turned.

-- Remove the knurled nut and the turning over tool.

Further installation is performed in reverse order of removal, while noting the following:

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

-- Install the upper timing chain cover. Refer to UPPER TIMING CHAIN COVER, REMOVING AND INSTALLING .

After removing or replacing the chain drive components the adaptation values for the chain length must be adapted again.

-- Connect the Vehicle Diagnostic Tester.

-- Select Diagnostic operating mode and Start diagnostics .

-- Select the Select individual test tab and select the following tree structure consecutively:

Drivetrain
Select the engine code and engine
01 - OBD-capable systems .
01 - Engine Electronics
01 - Engine electronics, functions
01 - Chain length diagnostic adaptation