ADBLUE® Delivery Module

WARNING: This page is about a different variant/trim than selected.

NOTE:

The Nitrogen Oxide (NOx) reducing agent AUS 32 (AdBlue®) is simply called reducing agent in the following information.

WARNING:

The reducing agent can irritate skin, eyes and the respiratory system.
If the fluid comes into contact with skin, rinse the affected area immediately with plenty of water.
Consult a physician if necessary.

Special tools and workshop equipment required

Torque Wrench (5-50 Nm) V.A.G 1331
Torque Wrench (40-200 Nm) V.A.G 1332
Engine/Transmission Jack V.A.G 1383 A
Special Wrench T50014

Removing

-- Remove the reducing agent tank. Refer to REDUCING AGENT (ADBLUE®) TANK .

CAUTION:

Protect the connectors, for example with a plastic bag and cable tie, before using the reducing agent. The electrical connectors can be damaged because the reducing agent has a tendency to seep and it crystallizes as it dries.

-- Disconnect the ventilation line -arrow-.

Fig 1: Disconnecting Ventilation Line -Arrow-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolts -A- and remove the reducing agent pump -V437- upward.

-- Cut off the cable ties -arrows- on the locking ring.

Fig 2: Cable Ties

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -arrow- from the right side of the tank.

Fig 3: Connector

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -arrow- from the reducing agent reservoir processing unit -G698-.

Fig 4: Special Wrench T50014

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Place the special wrench T50014 on the locking ring as illustrated and remove it.

CAUTION:

The cover may only be tilted a maximum of 30° after opening it. This prevents damage to the wires and the suction line inside the delivery module.

-- Open the delivery module cover, using the trim removal wedge 3409, if necessary.

-- Carefully reach into the delivery module chamber and turn it counterclockwise to loosen it from its retainer.

-- Remove the delivery module upward from the tank.

Installing

-- Place the seal -item 9- REDUCING AGENT (ADBLUE®) DELIVERY MODULE OVERVIEW in the tank opening.

-- Insert the delivery module into the tank according to the marks -A-. The marks -A- must align when inserting the module.

Fig 5: Inserting Delivery Module Into Tank According To Marks -A-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Carefully reach into the delivery module chamber and rotate it clockwise to secure it. The marks -B- will align when it is installed correctly.

Fig 6: Inserting Delivery Module Into Tank According To Marks -A-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Lubricate the sealing base on the cover with water and carefully press it into the seal. The marks -1- must align.

Fig 7: Identifying Aligned Marks -1-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Set the seal in place and tighten it by hand.

CAUTION:

Make sure the seal is not installed crooked on the tank threads. Otherwise it will leak and result in serious corrosion damage.

-- Place the special wrench T50014 on the locking ring as illustrated and tighten it. Tightening specification, see -item 7- REDUCING AGENT (ADBLUE®) DELIVERY MODULE OVERVIEW .

Fig 8: Special Wrench T50014

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Wash any leaking reducing agent off with water.

The rest of the installation is basically a reverse of the removal sequence.