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| Unplug electrical connector -5-. |
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| Unscrew bolt -4- and detach pump for reducing agent -V437--item 6- from active tank. |
WARNING | Reducing agent can cause skin irritation. |
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| Avoid contact with the skin and eyes. Wear gloves and safety goggles. |
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| If your skin has come into contact with reducing agent, rinse it off with soap and water. |
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| If reducing agent gets into your eyes, rinse them out with water for several minutes. |
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| Do not breathe in or swallow reducing agent. |
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| If you have swallowed reducing agent, rinse your mouth, drink lots of water and consult a paramedic or doctor immediately. |
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Note | Hold a clean cloth under the separating point to catch escaping reducing agent. |
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| Press release catches → Chapter and disconnect return line -1-, metering line -2- and supply line -3-. |
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| Seal off open pipes/lines and connections with clean plugs from engine bung set -VAS 6122-. |
| Installation is carried out in the reverse order; note the following: |
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| Adapt learnt value after draining reducing agent or renewing components → Chapter. |
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