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.

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

-- 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.

-- 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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-- Insert the exhaust camshaft -1- in the cylinder head cover. Turn the cam lobes of cylinder 4 -arrows- upward.

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-- Turn the intake camshaft -1- and the exhaust camshaft -2- until the markings -arrows- are in the position shown.

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-- The cams of the intake camshaft -1- and the exhaust camshaft -2- must point upward as shown -arrows-.

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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

-- Mount the cylinder head cover 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 using the : T10172A in direction of -arrow A- until the markings -1- and -2- align. Slide the : T40271/1 into the chain sprocket splines in direction of -arrow 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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