Left cylinder head, removing

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and equipment

Fig 1: 3452 Polydrive Key

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

3452 Polydrive key

Removing

Engine installed.

NOTE: All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.

Remove intake manifold. Refer to Intake manifold, removing and installing .

Fig 2: Removing Cover In Engine Compartment (Left Side)

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove cover -1- in engine compartment (left side).

Fig 3: Removing Coolant Hoses

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove coolant hoses -1- to -3-.
Remove coolant reservoir (arrow).
Disconnect electrical wiring to Engine Coolant Level (ECL) warning switch -F66- at bottom of expansion tank.

Fig 4: Disconnecting Electrical Harness Connectors And At Camshaft Position (CMP) Sensor 2 -G163- And Camshaft Position (CMP) Sensor 4 -G301-

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect electrical harness connectors -1- and -2- at Camshaft Position (CMP) sensor 2 -G163- and Camshaft Position (CMP) sensor 4 -G301-.
Unbolt Ground (GND) wire at rear of cylinder head.
Toothed belt, removing. Refer to Toothed belt, removing and installing .
Remove camshaft gears from left cylinder head.

Fig 5: Unscrewing Bolts And Removing Toothed Belt Guard At Left Rear

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Unscrew bolts -1- and -2- and remove toothed belt guard at left rear.

Fig 6: Removing Front Coolant Pipe From Cylinder Head

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove front coolant pipe from cylinder head (arrows).

Vehicles with automatic transmission

Fig 7: Disconnecting Vacuum Hose To Brake Booster

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect vacuum hose to brake booster (arrows).

All

Remove heat shield for harness connectors at left of bulkhead, if installed.

Fig 8: Removing Bolts At Flange Of Combination Valve For Secondary Air Injection

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts -1- at flange of combination valve for secondary air injection.
Unbolt coolant pipe at rear of cylinder head (bolts -2- and -3-).

NOTE:

Coolant pipe and combination valve remain installed.
Illustration is shown with engine removed.

Fig 9: Removing Nut For Left Exhaust Pipe/Exhaust Manifold

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove nut -2- for left exhaust pipe/exhaust manifold which is accessible from top.

NOTE: Illustration is shown with engine removed.

Fig 10: Removing Bolts For Front Vehicle Floor Crossmember

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove front vehicle floor crossmember -1- to -4-.

NOTE: Flex joint in front exhaust pipe must not be bent more than 10°, otherwise it may be damaged.

Fig 11: Disconnecting Exhaust System At Double Clamps

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect exhaust system at left double clamp (left arrow).

Fig 12: Removing Nut For Left Exhaust Pipe/Exhaust Manifold

GW00017604

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove nuts -1- and -3- for front exhaust pipe/left exhaust manifold which are accessible from bottom.

NOTE: Illustration is shown with engine removed.

Press front exhaust pipe off of exhaust manifold.

Fig 13: Identifying LH Cylinder Head Bolts Loosening Sequence

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Follow sequence -1- to -8- when loosening cylinder head bolts.

Carefully remove cylinder head.