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Home >> Volkswagen >> 2021 >> Jetta R-Line, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System, Emission Controls [CZDA,DGXA,DJXA,CWLA] >> 26 Exhaust System, Emission Controls >> Emissions Control System >> Overview - Emissions Control System
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Overview - Emissions Control System

Fig 1: Exploded View Of Emissions Control System
GWWA26-11294Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. Bolt
    • 20 Nm
  2. Bracket
    • Replace if damaged
  3. Nut
    • Tightening specification and sequence. Refer to Fig 3.
  4. Bolt
    • 20 Nm
  5. Nut
    • Tightening specification and sequence. Refer to Fig 3.
  6. Bracket
  7. Bracket
  8. Bolt
    • Tightening specification and sequence. Refer to Fig 3.
  9. Bolt
    • Tightening specification and sequence. Refer to Fig 3.
  10. Front Exhaust Pipe with Catalytic Converter
    • Do not bend the decoupling element more than 10° - otherwise it may get damaged
    • Do not stretch the decoupling element.
    • Do not damage the wire mesh on the decoupling element.
    • Protect catalytic converter from shocks and impact stress
    • Removing and installing. Refer to CATALYTIC CONVERTER, REMOVING AND INSTALLING .
    • Remove decoupling element guard on replacement part as late as possible
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
  11. Screw-Type Clamp
    • Tightening specification and sequence. Refer to Fig 3.
    • Replace after removing.
  12. Seal
  13. Turbocharger
  14. Nut
    • 30 Nm
  15. Front Clamping Sleeve

Installation Position for Front Clamping Sleeve 

Fig 2: Installation Position For Front Clamping Sleeve
GWWA26-11280Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the clamping sleeve in the position shown.

Installing the Catalytic Converter - Tightening Specification and Sequence 

Fig 3: Catalytic Converter Tightening Sequence
GWWA26-11279Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
1 -- Mount the catalytic converter on the turbocharger and install the new screw-type clamp -arrow- loosely.  
2 -- Install the bolts -3 and 5- and the nuts -1, 2 and 4- by hand, loose.
  • It must be possible to slide the catalytic converter and bracket back and forth.
3 -- Tighten the screw-type clamp -arrow-. 15 Nm
4 -- Tighten the bolts and nuts in the following sequence: -1 to 5-. 20 Nm