Supplementary heater

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety precautions when working 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 cooling system
  2
• 1.5 Safety precautions when 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 instructions
  7
• 3.1 Notes on general repairs
  7
• Supplementary heating
  8
• 1 Overview of fitting locations - auxiliary/supplementary heater
  8
• 1.1 Overview of fitting locations - components not located in passenger compartment
  8
• 2 Auxiliary/supplementary heater
  10
• 2.1 Overview of fitting locations - auxiliary/supplementary heater
  10
• 2.2 Assembly overview - auxiliary/supplementary heater, internal
  12
• 2.3 Assembly overview - auxiliary/supplementary heater attachments
  13
• 2.4 Removing and installing auxiliary/supplementary heater
  14
• 2.5 Dismantling and assembling auxiliary/supplementary heater
  17
• 2.6 Removing and installing air intake silencer
  17
• 2.7 Removing and installing circulation pump V55
  17
• 2.8 Removing and installing exhaust system
  19
• 2.9 Removing and installing auxiliary/supplementary heater bracket
  19
• 2.10 Removing and installing cover
  20
• 2.11 Removing and installing covers for auxiliary heater control unit J364
  20
• 2.12 Removing and installing auxiliary heater control unit J364
  21
• 2.13 Removing and installing glow plug with flame monitor Q8
  21
• 2.15 Dismantling and assembling burner unit
  22
• 3 Coolant circuit with auxiliary/supplementary heater
  24
• 3.1 Connection diagram - coolant hoses
  24
• 3.2 Bleeding coolant circuit of auxiliary/supplementary heater
  25
• 3.3 Removing and installing heater coolant shut-off valve N279
  26
• 3.4 Removing and installing coolant pipe (supply/return)
  27
• 4 Fuel supply
  33
• 4.1 Overview of fitting locations - fuel supply system
  33
• 4.2 Checking fuel delivery rate
  34
• 4.3 Removing and installing metering pump V54
  36
• 5 Regulation of auxiliary/supplementary heater
  38
• 5.1 Function description
  38
• 5.2 Supplementary heater mode
  39
• 5.3 Auxiliary heater mode
  40
• 5.4 Switching off auxiliary/supplementary heater
  40
• 6 Other controlling and regulating components
  42
• 6.1 Removing and installing ambient temperature sensor
  42
• 6.2 Removing and installing remote control receiver for auxiliary coolant heater R149
  42
• 6.3 Functional description of remote control for auxiliary/supplementary heater
  43