Audi Workshop Service and Repair Manuals

Diagram of coolant hose connections

• Heater unit heat exchanger
• ◆ After replacing, fill system with fresh coolant
• Bottom coolant pipe
• ◆ Removing and installing
  
• Throttle valve housing
• Expansion tank
• ◆ With filler cap
• ◆ Testing pressure relief valve in filler cap => Page 19-28
• Intake manifold
• Bottom coolant hose

• Upper coolant hose
• Radiator
• ◆ Removing and installing
  => Page 19-23
• ◆ After replacing, fill system with fresh coolant
• Top coolant pipe
• Coolant pump, coolant thermostat
• ◆ Removing and installing coolant pump => Page 19-13
• ◆ Check for ease of movement
• ◆ Removing and installing coolant thermostat => Page 19-19
• ◆ Checking => Page 19-20
• Cylinder head/cylinder block
• ◆ After replacing, fill system with fresh coolant
• Connection