Continuation For Both Cylinder Heads:

WARNING: This page is about a different car, the 2010 Audi A5, 2009 Audi A5, and 2008 Audi A5. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying TDC With Special Tool Adapter T140058

Courtesy of AUDI OF AMERICA, LLC

-- Turn the crankshaft one full revolution (360°) in the direction of engine rotation -arrow- using the Crankshaft Socket:T40058 .

The threaded holes -arrows- in the camshafts must face upward.

Fig 2: Identifying Camshaft Threaded Hole Alignment
Courtesy of AUDI OF AMERICA, LLC

Fig 1: Identifying TDC With Special Tool Adapter T140058

Courtesy of AUDI OF AMERICA, LLC

-- Turn the crankshaft one full revolution (360°) in the direction of engine rotation -arrow- using the Crankshaft Socket:T40058 .

The openings -arrows- on the exhaust camshafts must face toward the outer side of the engine.

Fig 2: Identifying Exhaust Camshaft Openings Alignment
Courtesy of AUDI OF AMERICA, LLC

Fig 1: Identifying TDC With Special Tool Adapter T140058

Courtesy of AUDI OF AMERICA, LLC

-- Turn the crankshaft one full revolution (360°) in the direction of engine rotation -arrow- using the Crankshaft Socket:T40058 .

The threaded holes -arrows- in the camshafts must face upward.

Fig 2: Identifying Camshaft Threaded Hole Alignment
Courtesy of AUDI OF AMERICA, LLC

-- Remove the camshaft timing chains from the camshafts. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .

CAUTION:

Risk Of Damaging Valves And Piston Crowns.

If the camshaft timing chain was also only removed on one cylinder head, the crankshaft must not be rotated any more.