1080B40 CATALYTIC PRE-CONVERTER - R R - Alfa - 156 - eLearn

3237706 - 1080B40 catalytic pre-converter - r r

) Position the vehicle on the ramp. Proceed with removal - 7055B54 under-engine guard - r r . 1. Undo the bolts (1a) and remove the exhaust manifold heat shield (1b).

1. Undo the nuts fixing the front section of the exhaust pipe to the catalytic pre-converter.2. Undo the nuts fixing the front section of the exhaust pipe to the catalytic converter.3. Remove the front exhaust pipe section complete with seals.

1. Undo the bolts (1a) and the nuts (1b) fixing the catalytic preconverter mounting bracket.

1. Loosen the collar (1a) and remove the catalytic preconverter (1b).2. Keep the catalytic preconverter mounting bracket.

Refitting ( Removing

) Place the catalytic preconverter complete with mounting back in its housing and fasten it to the turbocharger using the collar.Tighten the bolts and the nuts fixing the catalytic preconverter mounting bracket.1. Place the front section of the exhaust pipe with gaskets back in its housing.2. Tighten the nuts securing the exhaust pipe front section to the catalytic converter to the specified torque.

	Fastening	Component	Ø	Value(daNm)
2	Nut	PRE-CAT CONVERTOR/CAT CONVERTOR PIPE	M8	(Catalytic converter side) 2.3 ÷ 2.8

3. Tighten the nuts fixing the front section of the exhaust pipe to the catalytic preconverter to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
3	Nut	PRE-CAT CONVERTOR/CAT CONVERTOR PIPE	M8	(Catalyitic preconverter side) 2.3 ÷ 2.8

Place the lower exhaust manifold heat shield back in its housing and fix it using the bolts. Proceed with refitting - 7055B54 under-engine guard - r r . Remove the car from the ramps.