Reducing Agent Delivery Unit, Removing And Installing: Installation

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.

Tightening specifications. Refer to REDUCING AGENT ACTIVE TANK AND ATTACHMENTS OVERVIEW .

NOTE:

Replace seal.

Thoroughly clean the sealing ring surfaces.

-- Install the reducing agent delivery unit -2- in the active tank. Slide the heating element through the gap between the reducing agent delivery unit and installation opening into the active tank.

Fig 1: Reducing Agent Delivery Unit -2-, Sealing Ring -1-

Courtesy of AUDI OF AMERICA, LLC

-- Stretch the new sealing ring -1- over the reducing agent delivery unit and place it on the installation opening.

-- Bring the reducing agent delivery unit into the installation position:

The tab -arrow A- on the reducing agent delivery unit must fit into the groove -arrow B- on the rim of the opening for the active tank.

-- Install the new union nut -2- so that the marking -3- lines up a the beginning of the first thread -4-. The arrow marking -1- on the active tank is found here.

Fig 2: Identifying New Union Nut -2- & Marking -3- Lines Up With First Thread - 4

Courtesy of AUDI OF AMERICA, LLC

-- First tighten the new union unit by hand, then tighten it using the Wrench - Union Nut T50014 for a total of ⁵ /₄ turns (450°).

The marking -3- on the new union nut -2- must align with the marking -1- (the arrow lines up with the lines on the side).

Fig 3: Marking -3- On New Union Nut -2
Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal. Note the following:

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

-- Adapting Adaptation Value after Draining Reducing Agent or Replacing Components. Refer to ADAPTING ADAPTATION VALUE AFTER DRAINING REDUCING AGENT OR REPLACING COMPONENTS .