Overview - Muffler, AUDI A4/A5, With Catalytic Converter And Particulate Filter

Fig 1: Exploded View Of Overview - Muffler, Audi A4/A5, With Catalytic Converter And Particulate Filter

Courtesy of AUDI OF AMERICA, LLC

1. Center Muffler
   • Original equipment as one unit with rear mufflers. If a repair is required replace each separately
   • Separating point. Refer to EXHAUST PIPES/MUFFLERS, DISCONNECTING .
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
2. Retaining Loop
   • Replace if damaged
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
3. Bolt
   • 23 Nm
4. Bracket
5. Front Muffler
   • With a coupling
     • Do not bend more than 10°
     • Do not load on cable
     • Do not damage wire mesh at decoupling element
   • Removing and Installing. Refer to FRONT MUFFLER, REMOVING AND INSTALLING, CATALYTIC CONVERTER WITH PARTICULATE FILTER .
   • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
6. Seal
   • Replace after removing
7. Screw-Type Clamp
   • 7 Nm
   • Replace after removing
8. Bolt
   • 23 Nm
9. Mount
   • Replace if damaged
   • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
10. 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.
11. Rear Muffler
    • Original equipment one unit with the center muffler. If a repair is required replace each separately
    • Separating point. Refer to EXHAUST PIPES/MUFFLERS, DISCONNECTING .
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
12. Mount
    • Replace if damaged
    • Check the pretension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
13. Bolt
    • 23 Nm
14. Rear 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 3.
15. Bracket
16. Bolt
    • 23 Nm
17. Retaining Loop
    • Replace if damaged
    • Exhaust System, Installing without Tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .

Front Clamping Sleeve - Installation Position 

Fig 2: Double Clamps

Courtesy of AUDI OF AMERICA, LLC

-- Install the clamping sleeve in the position shown.

• Threaded connections are to the left.
• Nuts downward.
• Bolt ends must not protrude over the lower edge of the clamping sleeve.

Rear Clamping Sleeves - Installation Position 

Fig 3: Double Clamps

Courtesy of AUDI OF AMERICA, LLC

-- Install the clamping sleeve in the position shown.

• Threaded connections to the outer side of the vehicle
• Nuts downward.
• Bolt ends must not protrude over the lower edge of the clamping sleeve.