Auxiliary heater

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures for working on vehicles with high-voltage system
  1
• 1.2 Safety precautions when working in the vicinity of high-voltage components
  2
• 1.3 Safety precautions during work on fuel system
  2
• 1.4 Safety regulations for working on fuel supply
  3
• 1.5 Safety measures when working on vehicles with a start/stop system
  3
• 1.7 Safety precautions when working on the cooling system
  4
• 1.8 Safety precautions when working on vehicles with auxiliary/supplementary heater
  4
• 1.9 Safety precautions when working on the SCR system
  5
• 2 General information
  7
• 2.1 Type plates
  7
• 2.2 Starting conditions for auxiliary/supplementary heater
  8
• 3 Repair notes
  9
• 3.1 Rules for cleanliness
  9
• 3.2 General information
  9
• 3.3 General repair instructions
  9
• 3.4 Contact corrosion
  10
• 3.5 Nuts and bolts
  10
• 3.6 Pipe/wire routing and attachment
  10
• Supplementary heating
  11
• 1 Overview of fitting locations - auxiliary/supplementary heater
  11
• 1.1 Overview of fitting locations - components not located in passenger compartment
  11
• 1.2 Overview of fitting locations - components located in passenger compartment
  12
• 2 Auxiliary/supplementary heater
  13
• 2.1 Assembly overview - auxiliary heater
  13
• 2.2 Assembly overview - auxiliary/supplementary heater, internal
  16
• 2.3 Removing and installing auxiliary/supplementary heater
  18
• 2.4 Dismantling and assembling auxiliary/supplementary heater
  21
• 2.5 Removing and installing air intake silencer
  31
• 2.6 Removing and installing circulation pump V55
  32
• 2.7 Removing and installing silencer with bracket
  34
• 2.8 Removing and installing exhaust system
  36
• 2.9 Removing and installing auxiliary/supplementary heater bracket
  38
• 3 Coolant circuit with auxiliary/supplementary heater
  39
• 3.1 Connection diagram - coolant hoses
  39
• 3.2 Bleeding coolant circuit of auxiliary/supplementary heater
  39
• 3.3 Removing and installing heater coolant shut-off valve N279
  40
• 4 Fuel supply
  44
• 4.1 Overview of fitting locations - fuel supply system
  44
• 4.2 Assembly overview - fuel supply system
  45
• 4.3 Checking fuel delivery rate
  47
• 4.4 Removing and installing fuel lines of auxiliary heater
  48
• 4.5 Removing and installing metering pump V54
  52
• 4.6 Removing and installing bracket for metering pump V54
  54
• 5 Regulation of auxiliary/supplementary heater
  55
• 5.1 Function description
  55
• 5.2 Supplementary heater mode
  55
• 5.3 Auxiliary heater mode
  55
• 5.4 Switching off auxiliary/supplementary heater
  56
• 6 Other controlling and regulating components
  57
• 6.1 Removing and installing ambient temperature sensor G17
  57
• 6.2 Removing and installing remote control receiver for auxiliary heater R64
  57