CHASSIS MODIFICATIONS 2-17 E URO C ARGO E URO 4 - 5 If arc welding has to be done, in order to protect the electrical parts and the electronic power units, follow the mandatory instructions that follow: - Before disconnecting the power cables, check that there are no electric devices in operation. - If there is an electric battery isolation switch, wait for the cycle to stop. - Disconnect the negative power pole. - Disconnect the positive power pole without connecting it to the earth; DO NOT short-circuit it with the negative pole. - Disconnect the connectors from the electronic control unit , proceed with caution, taking care to avoid touching the control unit connector pins.
- Should it be necessary to carry out welding operations close to the control unit, remove it from the vehicle. - Earth the welding equipment directly to the piece that has to be welded. - Plastic pipes must be protected from heat sources and splashes of material; if necessary, these parts should be removed. - The surfaces of the leaf springs and air springs must be protected against weld splashes during welding. Do not let the electrodes or pliers come into contact with the spring leaves. - archweld in stretches using carefully dried basic electrodes. Diameter of the electrode is 2.5 mm, current intensity approx. 90A (max. 40A for each millimetre of diameter of the electrode).
Using MIG-MAG welding use a welding rod with the same characteristics as the material to be welded (diameter 1-1.2 mm). Avoid current overloading. Welding must be free from marginal cuts and waste material. - Repeat the operation on the reverse side by welding as detailed above. - Allow the side members to cool slowly and uniformly. Cooling by air, water or other means is not permitted. - Remove excess material resulting from the welding operations by grinding.
Operations on the system which do not comply with the instructions provided by IVECO or made by non qualified personnel can cause severe damage to on-board systems, affect driving safety and good operation of the vehicle and cause considerable damage which is not covered by warranty. Closing of existing holes If, when making new holes, the existing holes are found to be too close (see Figure 2.2), these may be closed up by welding. To ensure the success of this operation the outer edge of the hole should be chamfered and copper plate used for the inner part. For holes with a diameter of over 20 mm, chamfered plugs may be used, welded on both sides.
Stresses on the chassis Print 603.93.431 Base - July 2006 Revi - June 2007