Fuel Cooler: Description and Operation
Fuel Filter and Cooler Overview
1 Return Line
• From the high pressure pump.
• Blue or with a blue mark.
• Ensure the line is securely seated.
• To the -RF- mark on the fuel filter upper section
• Fuel system schematic overview. Refer to => [ Fuel System Schematic Overview ] Fuel System Schematic Overview.
• Fuel system overview. Refer to => [ Fuel System Overview ] Fuel System Overview.
2 Return Line
• Via the fuel cooler to the fuel tank.
• To the -RT- mark on the fuel filter upper section.
• Ensure the line is securely seated.
3 Supply Line
• From the auxiliary fuel pump (V393).
• Black
• Ensure the line is securely seated.
• To the -VM- mark on the fuel filter upper section.
• Fuel system schematic overview. Refer to => [ Fuel System Schematic Overview ] Fuel System Schematic Overview.
• Fuel system overview. Refer to => [ Fuel System Overview ] Fuel System Overview.
4 Bolt
• 10 Nm
5 Locking Bolt
• 5 Nm
• To drain the water, remove and extract approximately 100 cm 3 of fluid using the hand vacuum pump (V.A.G 1390) andcontainer (V.A.G 1390/1).
6 Seal
• Replace
7 Fuel Filter Upper Section
8 Supply Line
• From the fuel tank.
• Black
• Ensure the line is securely seated.
• To the -VF- mark on the fuel filter upper section.
• Fuel system schematic overview. Refer to => [ Fuel System Schematic Overview ] Fuel System Schematic Overview.
• Fuel system overview. Refer to => [ Fuel System Overview ] Fuel System Overview.
9 Seal
• Replace
10 Fuel Filter
• Observe the change intervals.
• Note the installed position.
11 Bolt
• 10 Nm
12 Gasket
• Replace
13 Fuel Filter Lower Section
14 Bolt
• 8 Nm
15 Bracket
• For the fuel filter and fuel cooler.
16 Bolt
• 50 Nm + 90° (1/4) additional turn.
• Replace
17 Coolant Hoses
• Coolant hose connection diagram. Refer to => [ Coolant Hose Connection Diagram ] [1][2]Cooling System.
18 Return Line
• To the fuel tank.
• Blue or with a blue mark.
• Ensure the line is securely seated.
• Fuel system schematic overview. Refer to => [ Fuel System Schematic Overview ] Fuel System Schematic Overview.
• Fuel system overview. Refer to => [ Fuel System Overview ] Fuel System Overview.
19 Fuel Cooler