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Renewing tailpipes > < Separating centre and rear silencers

A4 Mk3

Stress-free alignment of exhaust system
Stress-free alignment of exhaust system
Procedure
l  The exhaust system must be aligned when it is cool.
l  Tightening torques → Chapter „Silencers - exploded view“
   
Vehicles without clamps between centre silencer and rear silencer
–  Loosen bolt connections on front clamp.
–  Push exhaust system towards front of vehicle -arrow- so that rear mountings for rear silencer are preloaded by -a- = 6 ... 10 mm.
–  Align rear silencer so it is horizontal.
  A26-0101
–  Check clearance between tailpipes and bumper:
l  Dimension -x- (left-side) = dimension -x- (right-side)
–  Tighten bolt connections on clamp evenly.
Vehicles with clamps between centre silencer and rear silencer
–  Loosen bolt connections on front and rear clamps.
  A26-10675
–  Push centre silencer towards front of vehicle -arrow- until mounting for centre silencer is preloaded by -a- = 6 ... 10 mm.
–  Tighten bolt connections on front clamp evenly.
  A26-0101
–  Push rear silencer towards front of vehicle -arrow- so that rear mounting for rear silencer is preloaded by -a- = 11 ... 15 mm.
–  Align rear silencer so it is horizontal.
  A26-0101
–  Check clearance between tailpipes and bumper:
l  Dimension -x- (left-side) = dimension -x- (right-side)
–  Tighten bolt connections on rear clamps evenly.
  A26-10675

Renewing tailpipes > < Separating centre and rear silencers