Cylinder Head, Removing And Installing: Installing: Notes

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.

Tightening Specifications. Refer to OVERVIEW - CYLINDER HEAD .

CAUTION:

The Sealing Surfaces Could Be Damaged.

Carefully remove sealant residue from cylinder head and cylinder block.
Make sure that no long scrapes or scratches result.

Risk of damaging cylinder block.

There must be no oil or coolant in the blind holes for the cylinder head bolts in the cylinder block.

Risk Of Cylinder Head Seal Leaking.

Carefully remove all grinding and sanding residue.
Only unpack new cylinder head gasket immediately prior to installation.
To prevent cylinder head seal silicone layer and recessed area from being damaged, always handle seal extremely carefully.

Risk Of Damaging Open Valves.

If a replacement cylinder is installed, only remove plastic base right before cylinder head is installed to protect open valves.

Risk Of Damaging Valves And Piston Heads After Working On Valve Train.

To ensure valves do not strike pistons when starting, carefully rotate engine at least two full revolutions.

NOTE:

Replace The Bolts Which Are Being Tightened With An Additional Turn.

Replace self-locking nuts, sealing rings, seals and O-rings.

Note different sealant for cylinder head sealing surfaces and bolts.

If a replacement cylinder is installed, the contact surfaces between the hydraulic adjusting elements, roller rocker levers and cam running surfaces must be lubricated before installing the cylinder head cover.

Secure all hose connections with hose clamps of the same type as those equipped by the factory.

Change the coolant and engine oil whenever replacing the cylinder head or cylinder head seal.

-- Before installing the cylinder head, set the crankshaft and camshafts to "TDC" and install the Camshaft Clamp:T40133 on both cylinder heads and tighten to 25 Nm -arrows-.

Fig 1: Before Installing Cylinder Head, Set Crankshaft And Camshafts To "TDC"

Courtesy of AUDI OF AMERICA, LLC

The Camshaft Clamp:T40133 is correctly positioned when the holes for the cylinder head bolts remain free.

Crankshaft Locking Pin:T40069 must be screwed into the crankshaft.

Fig 2: Crankshaft Locking Pin T40069
Courtesy of AUDI OF AMERICA, LLC

-- Set cylinder head gasket in place.

Fig 3: Alignment Bushings In Cylinder Block -Arrows-

Courtesy of AUDI OF AMERICA, LLC

Pay close attention to centering pins -arrows- in cylinder block.
Cylinder head gasket installation position: "oben" (top) marking or part number toward cylinder head.