Catalytic pre-converter - r r
- Make
- Alfa Romeo
- Model
- 147 Factory Service Manual
- Year
- 2000–2004
- Section
- Exhaust emission control system › Catalytic pre-converter - r r
Catalytic pre-converter - r r
Removing
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 |
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
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.
Connect the negative (-) battery terminal.
Remove the car from the ramp.
Removing
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
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.
Removing
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
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 |
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.
Parts & tools for this job For 2000 Alfa Romeo 147
- PARTExhaust gasketSearch: Alfa Romeo 147 2000 exhaust gasket
- TOOLPenetrating oilSearch: penetrating oil
- TOOLOBD2 scannerSearch: OBD2 scanner
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