Audi Workshop Service and Repair Manuals

Removing and installing left cylinder head cover

Removing

• ‒ → → Unscrew bolts -arrows- and remove engine cover panels -A...C-.

• ‒ → Remove air duct -arrows-.

• ‒ → Remove coolant reservoir -arrows- and move it clear to the side.

Note:

Leave coolant hoses connected.

• ‒ Unplug connector from coolant level monitor.

• ‒ Remove cover panel from cylinder head cover (cylinder bank 4-6).
• ‒ → Release hose clamp -arrow-.
• ‒ Remove upper section of intake pipe -1-.
• ‒ Disconnect hose -2-.
• ‒ Detach water pipe -3-.

Note:

Insert plug in lower section of intake pipe.

• ‒ → Pull off hose -1-
• ‒ Pull plug connectors off ignition coils.
• ‒ Pull crankcase breather off cylinder head cover.
• ‒ Remove ignition coils.
• ‒ Remove cylinder head cover.

Installing

Install in reverse sequence; note the following points:

• ‒ → Seal end points of joints between bearing caps and cylinder head.
• ‒ Before installing cylinder head cover and gasket, carefully apply a small quantity of sealant D 454 300 A2 at the four end points of the sealing surfaces on the cylinder head -arrows-, using a small screwdriver.

Removing and installing right cylinder head cover

Removing

• ‒ → Unscrew bolts -arrows- and remove engine cover panels -A...C-.
• ‒ Remove cover above air cleaner.

• ‒ → Remove air duct -arrows-.

• ‒ → Disconnect fuel supply line and fuel return line -1- and -2-, and move fuel lines clear.
• ‒ Pull hose off ACF valve -3-.

• ‒ → Unplug connector -1- from air mass meter.
• ‒ Unplug connectors -2- from ignition output stages, and move wiring clear.
• ‒ Remove air cleaner.

• ‒ → Remover cover panel from right-hand cylinder head cover -arrows-.

• ‒ → Disconnect hose -1-.
• ‒ Disconnect hose -2-.
• ‒ Detach upper section of intake pipe -3-.

Note:

Insert plug in lower section of intake pipe.

• ‒ Unscrew bolt securing toothed belt guard from cylinder head cover.
• ‒ Unplug connectors from ignition coils.
• ‒ Pull crankcase breather off cylinder head cover.
• ‒ Remove ignition coils.
• ‒ Remove cylinder head cover.

Installing

Install in reverse sequence; note the following points.

• ‒ → Seal end points of joints between bearing caps and cylinder head.
• ‒ Before installing cylinder head cover and gasket, carefully apply a small quantity of sealant at the four end points of the sealing surfaces on the cylinder head -arrows-, using a small screwdriver.

• ◆ Sealant

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