Installing (Camshafts)

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.

Camshafts, Installing

NOTE:

Sealing surfaces must be completely free of oil and grease.

Pay attention that all roller rocker levers rest on the valve stem ends.

The crankshaft must not be at "TDC".

-- If the crankshaft was turned in the meantime, bring the piston for cylinder 1 to TDC and then turn the crankshaft back again slightly.

CAUTION:

- Wear protective eyewear.

-- To prevent contamination of the lubricating system with sealant residue, place a clean cloth over the open engine components.

-- Remove any sealant residue on the cylinder head using the flat-blade scraper.

-- Remove any sealant residue from the groove on the cylinder head cover as well as on the sealing surfaces.

-- Clean the sealing surfaces. They must be free of oil and grease.

-- Install the cam adjustment actuator. Refer to CAM ADJUSTMENT ACTUATOR, REMOVING AND INSTALLING .

-- Lubricate the running surfaces of both camshafts.

-- Place the intake camshaft -A- in the cylinder head. Turn the cam lobes of cylinder 4 -arrows- upward.

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Courtesy of AUDI OF AMERICA, LLC

CAUTION:

- Wear protective eyewear.

-- Place the exhaust camshaft in the cylinder head cover as shown. The cam pair -A- and -B- must be pushed together.

-- Turn the exhaust camshaft until the markings -A- and -B- align.

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-- Apply the sealant on the clean sealing surface of the cylinder head cover as shown -arrows-.

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CAUTION:

- Do not apply sealant bead thicker than indicated.

Sealant bead thickness: 1.5 to 2.5 mm

-- Secure the camshaft and place the cylinder head cover with the camshaft on the cylinder head.

-- Lightly push on the cylinder head cover by hand and while doing so turn the camshaft slightly until the cylinder head cover lays >>free of tension<< on the cylinder head.

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-- Replace the cylinder head cover bolts.

-- Tighten the bolts in several steps. Refer to Figure for the tightening sequence.

NOTE:

Pay attention that the cylinder head cover is not tilted.

-- Turn the intake camshaft with the : T40266 in direction of -arrow A- until the marks -1- and -2- align. Push the : T40271/2 in the chain sprocket splines -B-.

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-- Turn the exhaust camshaft with the : T40266 in direction of -arrow A- until the marks -1- and -2- align. Push the : T40271/1 in the chain sprocket splines -B-. The mark -2- is offset slightly to the right.

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-- Turn the crankshaft on the hex fitting -2- to the "TDC point". The flat area -1- faces upward toward the cylinder head when in the "TDC point".

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