Installing (the Camshaft Timing Chain)

WARNING: This page is about a different car, the 2018 Audi Q3 Quattro, 2018 Audi Q3, 2017 Audi Q3 Quattro, and 2017 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

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

-- Place the camshaft timing chain on the intake camshaft, exhaust camshaft and the crankshaft. Position the painted chain links -arrows- on the marks on the chain sprockets.

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-- Install the guide rail -2- and tighten the bolts -1-.

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-- Install the upper guide rail -1-.

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

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I -

Turn the exhaust camshaft slightly in direction of -arrow A- using the : T40266 and push the : T40271/1 out of the chain sprocket splines in direction of -arrow B-.

II -

Release the camshaft in direction of -arrow C-, until the timing chain touches the guide rail -1-. Hold the camshaft in this position, install the tensioning rail -2- and tighten the bolts -3-. Release the camshaft.

-- Turn the intake camshaft with the : T40266 in direction of -arrow 1- until the : T40271/2 can be pushed out of the chain sprocket splines -2-. Release the camshaft.

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-- Remove the : T40271/1 and : T40271/2 .

-- Install the bolts -arrows- and tighten them. Tightening specification, refer to -item 4- Bolt (OVERVIEW - CYLINDER HEAD).

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

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NOTE:

The adapter sleeve -1- is not present on every bearing bracket.

Carefully connect the bearing bracket without tilting - risk of damage.

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-- Mount the bearing bracket and the bolts -arrows- hand-tight.

-- Remove the : T40267 .

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

-- Install the chain tensioner -2- and tighten the bolt -1-. Remove the : T40011 , the oil pump chain tensioner must come into contact with the cut-out in the oil pan upper section -arrow-.

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-- Check the adjustment. The painted chain links -arrows- must line up with the markings on the chain sprockets.

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-- Install the control valves, refer to -item 7- (OVERVIEW - CAMSHAFT TIMING CHAIN, ENGINE WITH TWO CAMSHAFT ADJUSTERS).

-- Let the engine turn a second time in the direction of engine rotation.

NOTE:

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

-- Remove the : T10531/4 and remove the : T10531/3 .

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

-- Install the engine support (Cylinder Block, Belt Pulley Side).

-- Install the vacuum pump. Refer to VACUUM SYSTEM .

-- Install the high pressure pump. Refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .

-- Install the upper timing chain cover. Refer to TIMING CHAIN COVER, REMOVING AND INSTALLING, ENGINE WITH TWO CAMSHAFT ADJUSTERS .

There are additional procedures depending on the model. Refer to OVERVIEW - VALVETRAIN, ENGINE WITH TWO CAMSHAFT ADJUSTERS or OVERVIEW - VALVETRAIN, ENGINE WITH ONE CAMSHAFT ADJUSTER . .

-- After performing work on the chain drive the adaptation value in the engine control module must be adapted. To do so, turn on the ignition and select the following menu items on the Vehicle Diagnostic Tester:

01 - Engine Electronics
Guided Functions
01 - Adaptation after repair work on the chain drive