AdBlue(R) Delivery Unit

AdBlue(R) Delivery Unit

Special tools, testers and auxiliary items required

• Special Wrench (T50014)

Removing

Follow all safety precautions => [ Observe the following when working on the reducing agent metering system: ] Safety Precautions.

Follow the guidelines for cleanliness. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

- Remover the reducing agent active tank. Refer to => [ AdBlue(R) Active Tank ] AdBlue(R) Active Tank.

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

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 (T50014) and carefully remove the reducing agent delivery unit - 4 - upward.

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.

Installing

• For the correct tightening specifications, refer to => [ AdBlue(R) Active Tank and Attachments Overview ] AdBlue(R) Active Tank and Attachments Overview.

• 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.






- 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.






- First tighten the new union unit by hand, then tighten it using the (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).






The rest of the installation is performed in reverse order of removal, noting the following:

- Install the reducing agent active tank. Refer to => [ AdBlue(R) Active Tank ] AdBlue(R) Active Tank.

- Adapting adaptation value after draining AdBlue(R) or replacing components. refer to => [ Adapting Adaptation Value after Draining AdBlue(R) or Replacing Components ] Testing and Inspection.