Reducing Agent Delivery Unit, Removing And Installing: Removal

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Follow all safety precautions. Refer to WORKING ON REDUCING AGENT METERING SYSTEM, VEHICLES WITH SCR CATALYTIC CONVERTER .

Follow the guidelines for clean working conditions. Refer to FUEL SUPPLY, INJECTION SYSTEM AND CHARGING SYSTEM CLEAN WORKING CONDITIONS .

-- Remover the reducing agent active tank. Refer to REDUCING AGENT ACTIVE TANK, REMOVING AND INSTALLING .

NOTE:

Place a clean cloth under the separating location to catch any reducing agent that may leak out.

Fig 1: Reducing Agent Delivery Unit -4-

Courtesy of AUDI OF AMERICA, LLC

WARNING:

The reducing agent can cause skin irritation.

Avoid contact with skin and eyes! Always wear protective gloves and safety glasses.
If reducing agent should get on your skin, wash it off immediately with soap and water.
If reducing agent gets in your eye, rinse the eye for several minutes with water.
Never inhale or swallow the reducing agent!
Should you swallow any reducing agent, rinse your mouth, drink plenty of water and contact a doctor immediately.

-- Press the release button and disconnect the supply line -3- and return line -1-.

-- Remove the connectors -5- on the bracket and free them up.

-- Remove the union nut -2- using the Wrench - Union Nut T50014 and carefully remove the reducing agent delivery unit -4- upward.

WARNING:

Danger due to reducing agent leaking out.

Note that there is still some reducing agent left inside the active tank and reducing agent delivery unit.