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Press the locking ring to release the fuel line. WARNING If the battery is connected, make sure that the fuel pump is not activated when the door is opened. Fuel may leak out when the system is open. – Remove the fuel return line, which is blue or has a blue mark‐ ing, -1- from the fuel delivery unit. Disconnect the coupling. Refer to ⇒ “5 Connector Couplings, Disconnecting”, page 245 . – Connect the Diesel Pressure Tester Kit - Adapter Set - Con‐ nection Hose 2 -VAS6551/5-2- to the fuel return line -1-. – Guide the free end of the Diesel Pressure Tester Kit - Adapter Set - Connection Hose 2 -VAS6551/5-2- into a suitable con‐ tainer. – Connect the Vehicle Diagnostic Tester and perform the Gui‐ ded Function “Activate Fuel Pump”. Note The fuel pump is now activated. – Repeat this procedure as necessary until the fuel tank is com‐ pletely empty. – Fill the fuel tank with five liters (5.28 quarts) of diesel fuel. – Reconnect the fuel return line (blue, or blue marking) -1-. 3.3 Step 3 (Shavings in the Fuel Delivery Unit and Reservoir) – Clean the fuel delivery unit and the fuel tank with the Suction Pump - VAS5226- . – Install the fuel delivery unit. Refer to ⇒ “4.6 Fuel Delivery Unit, Removing and Installing”, . – Fill the fuel tank with five liters (5.28 quarts) of diesel fuel. 3. Misfueling 227 |