Fuel Delivery Unit and Fuel Level Sensor Assembly Overview
Fuel Delivery Unit and Fuel Level Sensor Assembly Overview
1 Fuel Delivery Unit
• Fuel pump electrical, checking, refer to => [ Fuel Pump Electrical, Checking ] Fuel Pump Electrical, Checking.
• Removing and installing, refer to => [ Fuel Delivery Unit ] Fuel Delivery Unit.
• After installing, fuel vehicle with at least 5 liters of fuel.
2 Fuel Level Sensor (G)
• Resistance values, checking, refer to => [ Fuel Level Sensor, Checking ] Fuel Level Sensor, Checking.
• Removing and installing, refer to => [ Fuel Level Sensor ] Fuel Level Sensor.
3 Threaded Ring
4 Seal
• Replace.
• Install dry.
5 Union Nut, 120 Nm
• Use ring nut wrench (T40068 A) for removal and installation.
• Replace.
6 Fuel Return Line
• From fuel filter.
• Do not kink.
• Mark before removing.
• To remove from locking flange, press release button on connecting piece.
• Note direction of arrow (fuel supply or return) on locking flange when installing.
• Clipped in on fuel tank.
7 Fuel Supply Line
• To fuel filter.
• Do not kink.
• Mark before removing.
• To remove from locking flange, press release button on connecting piece.
• Note direction of arrow (fuel supply or return) on locking flange when installing.
• Clipped in on fuel tank.
8 Electrical Harness Connector
• For Transfer Fuel Pump (FP) (G6).
• For fuel level sensor and Fuel Level Sensor 2 (G169).
9 Electrical Harness Connector
• For fuel level sensor 2.
10 Fuel Delivery Line
• From suction jet pump to fuel delivery unit.
• Clipped into fuel delivery unit.
• Secure to suction jet pipe with a total of 3 cable ties.
• Follow the installation instructions, refer to => [ Suction Jet Pump ] Suction Jet Pump
11 Union Nut, 120 Nm
• Use ring nut wrench (T40068 A) for removal and installation.
• Replace.
12 Seal
• Replace.
• Install dry.
13 Threaded Ring
14 Suction Jet Pump
• Checking, refer to => [ Suction Jet Pump ] Description and Operation.
• Removing and installing, refer to => [ Suction Jet Pump ] Suction Jet Pump.
• After installing, fuel vehicle with at least 5 liters of fuel.
15 Fuel Level Sensor 2 (G169)
• Resistance values, checking, refer to => [ Fuel Level Sensor 2, Checking ] Fuel Level Sensor 2, Checking.
• Removing and installing, refer to => [ Fuel Level Sensor 2 ] Fuel Level Sensor 2.
16 Suction Jet Pipe
• From fuel pump to suction jet pump.
• To disconnect, press release button on connection piece.
• Secure on fuel delivery line with a total of 3 cable ties.
• Follow the installation instructions. Refer to => [ Suction Jet Pump ] Suction Jet Pump.