Installing (Camshafts)

WARNING: This page is about a different variant/trim than selected.

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".

Courtesy of AUDI OF AMERICA, LLC