1080B40 CATALYTIC PRE-CONVERTER - R R - Alfa - 147 - eLearn

3024873 - 1080B40 catalytic pre-converter - r r

) Position the vehicle on the ramp.Ensure that the ignition key is in the OFF postition, then disconnect the battery negative terminal.

	Name	Connector
-	Battery	A1B

Proceed with the removal - 7055B54 under-engine guard - r r . 1. Disconnect the electrical connection for the right Lambda sensor and release the wiring from the bands.

	Name	Connector
1	Lambda sensor on left pre-catalyzer	K16

2. Disconnect the electrical connection for the left Lambda sensor and release the wiring from the fastenings.

	Name	Connector
2	Lambda sensor on pre-catalyzer	K15

Proceed with the removal - 1072C44 exhaust manifold heat shield on bulkhead - r+r . 1. Undo the nuts fixing the catalytic pre-converter, manifold side.2. Undo the bolt fixing the catalytic pre-converter, crankcase mounting bracket side.3. Undo the nuts fixing the catalytic pre-converter, catalytic converter side.4. Undo the bolt fixing the catalytic pre-converter flexible mounting, front suspension crossmember side.5. Remove the catalytic preconverter complete with Lambda sensors.Remove the gaskets.

Refitting ( Removing

) 1. Place the catalytic pre-converter, complete with Lambda sensors and gaskets, back in its housing.2. Tighten the bolt fixing the catalytic pre-converter flexible mounting, front suspension crossmember side.3. Tighten the nuts fixing the catalytic pre-converter, catalytic converter side, to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
3	Nut	CATALYTIC PRE-CONVERTER	M8	(Catalytic converter side) 2.7 ÷ 3.3

4. Tighten the bolt fixing the catalytic pre-converter, crankcase mounting bracket side.5. Tighten the nuts fixing the catalytic pre-converter, manifold side, to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
5	Nut	CATALYTIC PRE-CONVERTER	M8	(Manifold side) 2.7 ÷ 3.3

Proceed with the refitting - 1072C44 exhaust manifold heat shield on bulkhead - r+r .Connect the electrical connections for the Lambda sensors and fix the electrical wiring.Proceed with the refitting - 7055B54 under-engine guard - r r .Connect the negative (-) battery terminal.Remove the car from the ramp.