SL 500 (129.068) V8-5.0L (113.961) (2000)
Catalytic Converter: Service and Repair
Remove and installing catalytic converter or front exhaust system
1
Disconnect connectors of oxygen and diagnostic sensors
2
Unscrew bolts (11/5) with nuts (11/3) at flange connection between front exhaust system/rear exhaust system
3
Unscrew screws (11/1) at flange connection of front exhaust system/exhaust manifold
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If bolts are sluggish, or thread damaged, Replace rivet nuts in exhaust manifold.
4
Detach three-way catalytic converters/ front exhaust system from rubber mount (9/2)
5
Lift out catalytic converters/ front exhaust system
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Check seal rings (11/4) for damage and replace if necessary.
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Use emery cloth to remove combustion and corrosion residues at connection points. Replace nuts (11/3).
6
Install in the reverse order.
NOTE: Installation: Install three-way catalytic converters (158) without stress.