1 | Exhaust gas aftertreatment unit |
2 | Hole |
3 | Crack |
W49.20-1182-06
2 | Hole |
3 | Crack |
W49.20-1183-81
4 | Repair plate |
W49.20-1184-81
Caution | Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. | |
Warning | Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | |
Danger | The high voltage used for electric welding presents a lethal hazard. Risk of explosion from welding in areas close to highly inflammable materials. Risk of injury from weld splatter and UV-light when welding. Risk of poisoning from inhaling welding gases | Use insulating mats. Wear protective clothing, safety glasses and a protective mask. Remove highly inflammable materials from the hazard area. Use air extraction system. | |
General information and guidelines for welding on the exhaust aftertreatment unit | |||
Weld the cracks in the aftertreatment unit | |||
1 | Clean and polish damaged places of the exhaust gas aftertreatment unit (1). | ||
2 | Perform a hole (2) in the cracks (3) in the beginning and the end respectively with a Ø 3-mm drill bit. | If you drill in the beginning and the end of the crack (3) it is possible to avoid crack size increase after welding. | |
3 | Weld the cracks (3) and the holes (2). | ||
4 | Grind the cracks (3) and the holes (2) that have been welded. | ||
Close the holes in the aftertreatment unit | |||
5 | Prepare the repair plate (4) to close the cracks (3) and the holes (2). | For the repair plate (4), please use only stainless steel alloy plate (DIN 1.4301) with a 0.8-mm material thickness . | |
If the hole in the exhaust gas aftertreatment unit (1) exceeds the size of 10x10 cm, | |||
| |||
the exhaust gas aftertreatment unit (1) should be replaced. | |||
6 | Weld the repair plate (4) in the exhaust gas aftertreatment system (1). | The plate should be gas-tight, that is, welded with a continuous weld bead. | |
7 | Straighten the weld bead of the repair plate (4). |
Documenti citati
- ah4920n000101a Avvertenze generali e direttive relative ai lavori di saldatura sull'unità di post-trattamento dei gas di scarico
- as0000z000201a Pericolo di lesioni alla pelle e agli occhi nel maneggiare oggetti caldi o incandescenti
- as0000z000701a Pericolo di morte dovuto all'alta tensione durante la saldatura elettrica. Pericolo di esplosione dovuto alla saldatura vicino a materiali facilmente infiammabili. Pericolo di lesioni dovuto agli spruzzi di saldatura e alla luce
- as0000z001701a Pericolo di lesioni a causa di tagli o abrasioni provocati dai bordi taglienti dei componenti del veicolo.