Exhaust Temperature Control Assembly Overview: Notes

Fig 1: Exhaust Temperature Control Assembly Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • Tightening specifications, refer to Description and Operation
2. Bolt
   • Tightening specifications, refer to Description and Operation
3. Differential Pressure Sensor -G505-
   • Removing and installing, refer to Removal and Installation
4. Control Pipe
   • Control pipe from the exhaust gas return cooler to exhaust pressure sensor 1
5. Exhaust Pressure Sensor 1 -G450-
   • Removing and installing, refer to Removal and Installation
6. Bolt
   • Tightening specifications, refer to Description and Operation
7. Bolt
   • Tightening specifications, refer to Description and Operation
8. Exhaust Gas Temperature Sensor 3 -G495-
   • 45 Nm
   • Removing and installing, refer to EXHAUST GAS TEMPERATURE SENSOR 3 
   • Note installation position EXHAUST TEMPERATURE CONTROL ASSEMBLY OVERVIEW 
   • Coat with hot bolt paste; Hot bolt paste,
9. Exhaust Gas Temperature Sensor 2 -G448-
   • 45 Nm
   • Removing and installing, refer to EXHAUST GAS TEMPERATURE SENSOR 2 
   • Note installation position EXHAUST TEMPERATURE CONTROL ASSEMBLY OVERVIEW 
   • Coat with hot bolt paste; Hot bolt paste,
10. Exhaust Gas Temperature Sensor 1 -G235-
    • 45 Nm
    • Mark the installation position before removing
    • Removing and installing, refer to EXHAUST GAS TEMPERATURE SENSOR 1 
    • Coat with hot bolt paste; Hot bolt paste,
11. Turbocharger
12. Heated Oxygen Sensor -G39- with Oxygen Sensor Heater -Z19-
    • Removing and installing, refer to Removal and Installation
13. Exhaust Gas Temperature Sensor 4 -G648-
    • 45 Nm
    • Mark the installation position before removing
    • Coat with hot bolt paste; Hot bolt paste,
    • Lines, Routing, refer to LINE ROUTING, EXHAUST SYSTEM COMPONENTS 
14. Particulate Filter
15. Oxygen Sensor after Three Way Catalytic Converter -G130-
    • Removing and installing, refer to Removal and Installation
    • Lines, Routing, refer to LINE ROUTING, EXHAUST SYSTEM COMPONENTS 
16. NOx Reduction Catalytic Converter
17. Clamp
18. Gasket
19. Control Pipe
    • Tightening specifications, refer to Description and Operation
    • Do not change the angles of the control pipe
    • Install without tension
20. Nut
    • 9 Nm
21. Bracket
    • For the control wire
22. Bracket
    • For the differential pressure sensor -G505-
23. Bolt
    • Tightening specifications, refer to Description and Operation
24. Bracket