Left coolant pipe, removing and installing

WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, and 2007 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Special tools, testers and auxiliary items required

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Hose clamp pliers V.A.G 1921

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Spring-type clip pliers VAS 5024 A

Removing

Drain coolant → Cooling system, draining and filling .

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Loosen hose clip - 1 - at coolant hose.

NOTE:

Ignore - arrows -.

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Remove nuts - 1 and 5 - accessible from below.

NOTE:

Nuts - 2, 3, 4 - are removed at a later time.

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Disconnect vacuum lines - arrows - to brake booster.
Lay vacuum lines aside.

NOTE:

Ignore - 1 -.

Remove left cylinder head cover → Left cylinder head cover, removing and installing .

NOTE:

Cover cylinder head with a clean cloth so that nothing falls inside.

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Remove front coolant hose - 2 - from left lower coolant line.

NOTE:

Ignore - 1 -.

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Remove nuts - 2 through 4 - accessible from above.
Remove heat shield - A - from threaded pins.
Remove heat shield - B - upward.

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Remove Camshaft Position (CMP) Sensor 4 G301 - arrow - (left cylinder bank).

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Remove bolt - 1 - and remove oil dipstick guide tube upward.
Remove bolts - 4 and 5 - and pivot hydraulic oil pipe to side.
Remove bolts - 2 and 3 - and remove left coolant pipe from coolant hoses - arrows -.

Installing

Tightening torques → Coolant pipes, assembly overview , Left heat shield

Installation is in reverse order of removal, note the following:

NOTE:

Replace oil dipstick guide tube O-ring.
Secure all hose connections using hose clamps appropriate for the model type .

Place oil dipstick guide tube in hole on upper part of oil pan.
Install Camshaft Position (CMP) Sensor 4 G301 (left cylinder bank) → 24 - MULTIPORT FUEL INJECTION (MFI) .
Install left cylinder head cover → Left cylinder head cover, removing and installing .
Fill with coolant → Filling .