Fuel supply system - Diesel engines

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety regulations for working on fuel supply
  1
• 1.3 Safety measures when working on vehicles with a start/stop system
  2
• 1.4 Safety precautions when working on the SCR system
  2
• 2 Identification
  4
• 2.1 Engine number/engine data
  4
• 3 General information
  5
• 3.1 Rules for cleanliness when working on auxiliary heater and fuel system
  5
• 4 Repair notes
  6
• 4.1 Routing and attachment of lines
  6
• 4.2 General repair instructions
  6
• Fuel supply system
  7
• 1 Procedure should vehicle be misfueled
  7
• 2 Fuel tank
  14
• 2.1 Assembly overview - fuel tank
  14
• 2.2 Removing and installing fuel tank
  17
• 2.3 Emptying fuel tank
  28
• 2.4 Removing and installing misfuelling prevention device
  33
• 2.5 Deactivating misfuelling prevention device
  36
• 3 Fuel delivery unit, fuel gauge sender
  37
• 3.1 Assembly overview - fuel delivery unit and fuel gauge sender
  37
• 3.2 Removing and installing fuel delivery unit, fuel gauge sender
  38
• 3.3 Removing and installing fuel gauge sender G
  42
• 4 Lines
  44
• 4.1 Removing and installing fuel lines
  44
• 5 Plug-in connectors
  49
• 5.1 Separating plug-in connectors
  49
• 6 fuel filter
  53
• 6.1 Assembly overview - fuel filter
  53
• 6.2 Removing and installing fuel filter
  58
• 6.3 Fuel hoses in the engine compartment
  67
• 6.4 Drain water from fuel filter
  68
• 7 Accelerator pedal
  69
• 7.1 Assembly overview - accelerator module
  69
• 7.2 Removing and installing accelerator module with accelerator position sender G79 / G185
  69
• 8 Fuel pump
  73
• 8.1 Checking fuel system pressurisation pump G6
  73
• 8.2 Removing and installing fuel pump
  109
• 9 Senders and sensors
  113
• 9.1 Removing and installing water separator sender G63
  113