Reducing Agent Injector (N474)

Reducing Agent Injector (N474)

Removing

- On a vehicle with air suspension, activate vehicle lift mode.

The reducing agent can cause skin irritation.

• Always observe the safety precautions when working with reducing agent => [ Observe the following when working on the reducing agent metering system: ] Safety Precautions.

• Wear safety glasses.

• Lay a cloth below to catch escaping reducing agent.

- Press the release buttons - arrows - and remove the reducing agent hose - 1 -.






- Disconnect the connector - 2 -.

- Loosen the clamps - 3 - and remove the reducing agent injector - 4 -.

Installing

Install in reverse order of removal. Note the following:

• Tightening specifications, refer to => [ AdBlue(R) Injector Overview ] Description and Operation.

• Replace the gasket.

• Installation position: The tabs in the reducing agent injector - 1 - must fit into the mounts in the SCR catalytic converter - 2 -.






- On a vehicle with air suspension, deactivate vehicle lift mode.

- 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.