Overview - Muffler

Fig 1: Overview - Muffler

Courtesy of AUDI

1. Rear Clamping Sleeves
   • Tighten the threaded connections equally to 23 Nm.
   • Before tightening, align the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
   • For individual replacement of the center and rear mufflers
   • Installation position. Refer to Fig 3.
2. Nut
   • 3 Nm
   • Always replace after removing.
3. Exhaust Door Control Unit -J883- / Exhaust Door Control Unit 2 -J945-
   • Removing and installing. Refer to Exhaust Door Control Unit -J883- / Exhaust Door Control Unit 2 -J945-, REMOVING AND INSTALLING .
4. Center Muffler
   • Original equipment as one unit with rear mufflers. If a repair is required replace each separately
   • Removing and installing. Refer to MUFFLER, REMOVING AND INSTALLING .
   • Separating point. Refer to EXHAUST PIPES/MUFFLERS, DISCONNECTING .
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
5. Bolt
   • 20 Nm
6. Bracket
   • For the retaining loop
7. Retaining Loop
   • Always replace if damaged
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
8. Seal
   • Always replace after removing.
9. Nut
   • 23 Nm
   • Always replace after removing.
   • Coat the threads with hot bolt paste. Refer to the Parts Information for the hot bolt paste.
10. Mount
    • Always replace if damaged
    • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
11. Bolt
    • 20 Nm
12. Front Clamping Sleeve
    • Tighten the threaded connections equally to 23 Nm.
    • Before tightening, align the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
    • Installation position. Refer to Fig 2.
    • Pushed onto the front muffler stop
13. Left Front Muffler
    • With the coupling, the coupling must not be bent more than 10° - otherwise it may be damaged
    • Removing and installing. Refer to FRONT MUFFLER, REMOVING AND INSTALLING .
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
14. Retaining Loop
    • Always replace if damaged
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
15. Mount
    • Always replace if damaged
    • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
16. Bolt
    • 20 Nm
17. Rear Muffler
    • Original equipment one unit with the center muffler. If a repair is required replace each separately
    • Removing and installing. Refer to MUFFLER, REMOVING AND INSTALLING .
    • Separating point. Refer to EXHAUST PIPES/MUFFLERS, DISCONNECTING .
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
18. Mount
    • Always replace if damaged
    • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
19. Bolt
    • 20 Nm

Installation Position of the Front Clamping Sleeves:

Fig 2: Clamping Sleeve Locations

Courtesy of AUDI

-- Install the clamping sleeves so that the bolt ends do not project over lower edge of the clamping sleeves.

• Installed position: the threaded connections face outward.
• Angle -α- = 45°.

Installation Position of the Rear Clamping Sleeves:

Fig 3: Double Clamps

Courtesy of AUDI

-- Install the clamping sleeves so that the bolt ends do not project over lower edge of the clamping sleeves.

• Installed position: the threaded connections face outward.

Individual Mounting Components:

Fig 4: Individual Mounting Components

Courtesy of AUDI

1. Spacer Sleeve
2. Pressure Spring
3. Washer
4. Bolt - 23 Nm
5. Bolt - 23 Nm
6. Spacer Sleeve
7. Buffer
8. Tab
9. Spacer Sleeve