S4 V8-4.2L (BHF) (2004)
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Remove nuts - 1 to 3 - for right front exhaust pipe/exhaust manifold.
NOTE: Illustration shows engine removed.
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Remove front exhaust pipe with front and main catalytic converters.
Installing
Installation is performed in reverse order of removal. Note the following:
NOTE:
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Replace self-locking nuts.
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Secure all hose connections using hose clamps appropriate for the model type Parts Catalog
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During installation, reinstall all cable ties at the same locations.
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Tighten nuts - 1 to 3 - of front exhaust pipe/exhaust manifold bolts uniformly in stages, align catalytic converter horizontally while doing so.
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Install subframe.
NOTE: Individual mounting components of exhaust system on transmission.
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Align exhaust system free of tension.
Tightening torques
Component
Nm
Front exhaust pipe with front and main
27
catalytic converters to exhaust manifold.
Front exhaust pipe with front and main
25
catalytic converters to mounting strap.
Pivot rod to transmission
40
Connecting rod for shift rod to
23
transmission.
Drive axle protection to
23
transmission.