Auxiliary heater, supplementary heater

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety precautions during work on fuel system
  1
• 1.2 Safety measures when working on vehicles with a start/stop system
  1
• 1.4 Safety precautions when working on the cooling system
  2
• 1.5 Safety precautions for working on vehicles with auxiliary/supplementary heater
  2
• 2 General information
  4
• 2.1 Type plates
  4
• 2.2 Starting conditions for auxiliary/supplementary heater
  5
• 3 Repair notes
  7
• 3.1 Rules for cleanliness
  7
• 3.2 General repair instructions
  7
• 3.3 Contact corrosion
  7
• 3.4 Nuts and bolts
  8
• 3.5 Pipe/wire routing and attachment
  8
• Supplementary heating
  9
• 1 Overview of fitting locations – auxiliary/supplementary heater
  9
• 1.1 Overview of fitting locations - components not located in passenger compartment
  9
• 2 Auxiliary/supplementary heater
  12
• 2.1 Overview of fitting locations – auxiliary/supplementary heater
  12
• 2.2 Assembly overview - auxiliary heater
  13
• 2.3 Removing and installing auxiliary/supplementary heater
  14
• 2.4 Removing and installing air intake silencer
  18
• 2.5 Removing and installing recirculation pump V55
  18
• 2.6 Removing and installing exhaust system
  20
• 2.7 Removing and installing auxiliary/supplementary heater bracket
  21
• 2.8 Removing and installing cover
  23
• 2.9 Dismantling and assembling heater unit
  25
• 2.10 Removing and installing glow plug with flame monitoring Q8
  26
• 2.11 Removing and installing temperature sensor G18/overheating sensor G189
  26
• 2.12 Removing and installing auxiliary heater control unit J364
  28
• 2.13 Removing and installing combustion air blower V6
  28
• 3 Coolant circuit with auxiliary/supplementary heater
  29
• 3.1 Connection diagram - coolant hoses
  29
• 3.2 Bleeding coolant circuit of auxiliary/supplementary heater
  31
• 3.3 Removing and installing heater coolant shut-off valve
  32
• 4 Fuel supply system
  35
• 4.1 Overview of fitting locations - fuel supply system
  35
• 4.2 Checking fuel delivery rate
  35
• 4.3 Removing and installing metering pump V54
  37
• 4.4 Removing and installing fuel pump
  39
• 4.5 Removing and installing fuel line leading to metering pump V54
  41
• 4.6 Removing and installing bracket for metering pump V54/fuel pump
  43
• 4.7 Removing and installing intermediate bracket for metering pump V54/fuel pump
  44
• 5 Regulation of auxiliary/supplementary heater
  46
• 5.1 Functional description
  46
• 5.2 Auxiliary/supplementary heater mode
  47
• 5.3 Switching off auxiliary/supplementary heater
  47
• 6 Other controlling and regulating components
  48
• 6.1 Removing and installing ambient temperature sensor G17
  48
• 6.2 Removing and installing remote control receiver for auxiliary coolant heater R149
  48
• 6.3 Functional description of remote control for auxiliary/supplementary heater
  49
• 6.4 Removing and installing remote control receiver for auxiliary heater R64
  52
• 7 Auxiliary air heater
  53
• 7.1 Overview of fitting locations - auxiliary air heater
  53
• 7.2 Assembly overview - auxiliary air heater
  54
• 7.3 Removing and installing auxiliary air heater
  56
• 7.4 Dismantling and assembling auxiliary air heater
  58
• 7.5 Removing and installing air intake silencer
  68
• 7.6 Removing and installing exhaust system
  69
• 7.7 Removing and installing bracket, auxiliary air heater, heater unit
  70
• 7.8 Removing and installing bracket, auxiliary air heater, body
  71
• 7.9 Removing and installing intake port for auxiliary air heater
  72
• 7.10 Removing and installing auxiliary air heater distribution box
  74
• 7.11 Removing and installing auxiliary air heater floor vents
  76
• 7.13 Removing and installing auxiliary air heater stone deflector
  76
• 7.14 Removing and installing auxiliary air heater vent duct bracket
  77
• 8 Fuel supply to auxiliary air heater
  79
• 8.1 Overview of fitting locations - fuel supply system
  79
• 8.2 Checking fuel delivery rate
  79
• 8.3 Removing and installing fuel pump fuel line of heater unit for auxiliary air heater
  81
• 8.4 Removing and installing metering pump 2 V386
  82
• 8.5 Removing and installing fuel pump fuel line of heater unit for auxiliary air heater
  82
• 8.6 Removing and installing metering pump 2 V386 bracket
  84
• 8.7 Removing and installing metering pump 2 V386 intermediate bracket
  84
• 9 Regulation of auxiliary air heater
  85
• 9.1 Functional description
  85
• 10 Other components of auxiliary air heater
  88
• 10.1 Temperature sensor on roof for air inlet on auxiliary air heater G967
  88
• 10.2 Removing and installing air distribution flap control motor 2 V667
  89