Catalytic converter, removing and installing

Removing

Fig 1: Removing Engine Cover

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Fig 2: Removing Coolant Hoses And Unfastening Coolant Expansion Tank

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Remove coolant expansion tank - arrow - and set it aside with coolant hoses attached.

Fig 3: Identifying Oxygen Sensor Electrical Connectors

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Disconnect electrical connector - 1 - for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) Z29 (brown connector) and free up electrical wiring to catalytic converter.
Disconnect electrical connector - 2 - for Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19 (black connector) and free up electrical wiring to catalytic converter.

Fig 4: Identifying Intake, Mass Air Flow (Maf) Sensor G70 Electrical Harness Connector & Air Filter Housing

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Disconnect intake hose - 1 - for air filter/turbocharger.
Disconnect electrical harness connector - 2 - at Mass Air Flow (MAF) Sensor G70.
Free up wiring harness on air filter housing and remove air filter housing - 3 -.

NOTE:

Exhaust system decoupling element must not be bent more than 10 ° , otherwise it may be damaged.

Fig 5: Locating Clamping Sleeve

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Fig 6: Separating Front Exhaust Pipe/Catalytic Converter

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Separate front exhaust pipe/catalytic converter - arrows -.
Remove bolt - 1 - at bracket for front exhaust pipe and remove front exhaust pipe.

Fig 7: Removing Nut At Catalytic Converter/Turbocharger From Below

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Fig 8: Removing Nuts At Catalytic Converter/Turbocharger From Above

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Installing

Installation is in reverse order of removal, note the following:

NOTE:

Install exhaust system free of stress → Exhaust system, installing tension free .

Torque specifications

Component		Nm
Catalytic converter to turbocharger		40 ¹⁾²⁾
Mount to subframe		23
Clamping sleeve		23
¹⁾ Replace bolt or nut ²⁾ Coat studs of exhaust manifold and threads of oxygen sensor with hot bolt paste; Hot bolt paste