Cylinder Heads: Removing

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, and 2010 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Engine installed.

NOTE:

The following information describes how to remove both cylinder heads at the same time.

If only one cylinder head will be removed, follow the applicable instructions in the following description.

When installing, bring all cable ties back to same positions.

WARNING:

There is a risk of injury because the fuel is under very high pressure.

Reduce the fuel pressure down to residual pressure before opening the high pressure area of the fuel injection system.

-- Reduce fuel pressure in high pressure area. Refer to General Information .

-- Remove the upper coolant pipe. Refer to UPPER COOLANT PIPE .

-- Removing the ribbed belt:

-- Remove the lower section of the intake manifold. Refer to Removal and Installation .

Fig 1: Disconnecting Fuel Injector Connectors

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-- Disconnect the connectors on the fuel injectors.

-- Remove the affected camshaft timing chain from the camshafts. Refer to CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS .

Vehicles with Hydraulic Power Steering

Fig 2: Identifying Coolant Pump Pulley Bolts

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-- Remove the bolts for the coolant pump ribbed belt pulley, using a 3212 to counter hold.

-- Remove the bolts -1 and 2- and lay the power steering pump aside.

Fig 3: Dynamic Steering Installation Location

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NOTE:

The illustration shows the installation location on a vehicle with dynamic steering.

Ignore -3- and -arrow-.

All Vehicles

Fig 4: Disconnecting Engine Coolant Temperature Sensor Connector

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-- Disconnect the connector -3- from the engine coolant temperature sensor -G62-.

-- Remove the bolts -arrows-.

-- Remove the clips -1 and 4-, loosen the clamp -2- and remove the coolant hoses from the front coolant pipe.

NOTE:

Ignore -5-.

-- Remove the threaded connection -1- and move the fuel supply line to the side.

Fig 5: Identifying Fuel Supply Line

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-- Disconnect the connectors -2 and 3-.

-- Remove the bolt -arrow- and remove the oil dipstick and guide tube.

Fig 6: Identifying Oil Dipstick Guide Tube Bolt

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-- Open the clamp -arrow- and remove the vacuum hose from the vacuum pump.

Fig 7: Identifying Vacuum Pump Hose

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-- Remove the bolts -arrows- on the rear of the cylinder head.

Fig 8: Identifying Bolts At Rear Of Cylinder Head

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Left cylinder head: 3 bolts.
Right cylinder head: 4 bolts.