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Front exhaust pipe, catalytic converter, exhaust manifold > < Separating centre and rear silencers

A4 Mk1

Stress-free alignment of exhaust system
Stress-free alignment of exhaust system
l  The exhaust system must be aligned when it is cool.
   
Vehicles without clamp between centre silencer and rear silencer
–  Loosen bolts on front clamp → Item.
–  Push exhaust system towards front of vehicle -arrow- so that mounting (rear right) for rear silencer is preloaded by -a- = 9 ... 11 mm.
–  Tighten bolt connections on clamp evenly.
–  Align tailpipes → Anchor.
Vehicles with clamp between centre silencer and rear silencer
  Note
On vehicles with clamp fitted between centre silencer and rear silencer, it is also necessary to align the centre silencer.
–  Loosen bolts on front clamp → Item and rear clamp → Item.
  A26-0104
–  Push front section of exhaust system towards front of vehicle -arrow-, so that mounting for centre silencer is preloaded by -a- = 7 ... 9 mm.
–  Tighten bolt connections on front clamp evenly → Item.
  A26-0199
–  Push rear silencer towards front of vehicle -arrow- until mounting (rear right) on rear silencer is preloaded by -a- = 9 ... 11 mm.
–  Tighten bolt connections on rear clamp evenly → Item.
–  Align tailpipes → Anchor.
Tightening torque
  A26-0104
ComponentNm
Bolted connections on clamps40

   
Aligning tailpipes
–  Align tailpipes as follows:
l  Distance -a- (left-side) = distance -a- (right-side).
l  Distance -b- from bumper cut-out to top of tailpipes should be at least 24 mm.
  V26-0959

Front exhaust pipe, catalytic converter, exhaust manifold > < Separating centre and rear silencers