Secondary Air Injection (AIR) (left combination valve), removing and installing

WARNING: This page is about a different car, the 2006 Audi A8, 2005 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Removing

Fig 1: Removing Engine Cover

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Remove engine cover - 1 - upward.

Fig 2: Removing Pipe Of Crankshaft Housing Ventilation

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Remove bolt - 1 -.
Remove pipe of crankshaft housing ventilation - arrows -.

NOTE:

Illustration depicts engine from rear.

Fig 3: Disconnecting Vacuum Hose At Combination Valve To Be Tested

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect vacuum hose - arrow -.
Remove bolts - 1 - and - 2 - and remove combination valve.

NOTE:

Illustration depicts engine from rear.

Installing

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

NOTE:

Replace seals.
Secure all hose connections using hose clamps appropriate for the model type .

Torque specifications

Component	Nm
Combination valve to connection flange	10
Connecting tube to combination valve	10
Crankcase ventilation tube to cylinder head	10