Exhaust Door Control Unit -J883- And Reduction Catalytic Converter Overview

Fig 1: Reduction Catalytic Converter Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. from the NOx Reduction Catalytic Converter
2. Seal
   • Always replace.
   • Installing, refer to Fig 2.
3. Clamp
   • 7 Nm
   • Always replace.
   • Note the installed position, refer to Fig 3.
4. Exhaust Door Control Unit
   • Note the installed position.
   • Heat shield and connector wire routing, refer to EXHAUST SYSTEM COMPONENT WIRE ROUTING .
5. Reduction Catalytic Converter
   • Exhaust system, checking for leaks. Refer to EXHAUST SYSTEM, CHECKING FOR LEAKS .
6. Front Muffler
7. Clamping Sleeve
   • Note the installed position, refer to Fig 4.
   • Align the exhaust system free of stress. Refer to EXHAUST SYSTEM, INSTALLING .
   • Tighten the bolts evenly.
8. Nut
   • 23 Nm

Fig 2: Installing the Seal Between the Exhaust Door Control Unit and NOx Reduction Catalytic Converter

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Insert the seal -2- with the angled tab -B- in the notch -A- on the NOx reduction catalytic converter -1-.

-- Insert the exhaust door control unit -3- with the retaining tab -C- in the notch -A-.

Fig 3: Installed Position of the Clamp between the Exhaust Door Control Unit and NOx Reduction Catalytic Converter

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the new clamp so the bolt is opposite the exhaust door control unit housing and the -45 +/- 10°- angle is maintained.

Fig 4: Clamping Sleeve Location

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- When installing the clamping sleeve, ensure that the bolt end -arrow- does not project beyond the lower edge of the clamping sleeve:

• Threaded connection points toward the right.
• Tighten the threaded connections equally to 23 Nm.