CHASSIS MODIFICATIONS 2-15 E URO C ARGO E URO 4 - 5 Stresses on the chassis 2.6 Stresses on the chassis Do not exceed the following stress values under static conditions: Table 2.9 When prescribed by national regulations, the bodybuilder must check that the stress limits are not exceeded. Welding activity will cause a deterioration in the characteristics of the material. Therefore, when checking the stresses in thermically-modified zones, consider a reduction of approx. 15% of the resistance characteristics. 2.7 Welding the Chassis Welding operations must only be carried out by specialist, trained personnel, using suitable equipment to ensure high quality workmanship. Welding is permitted:
- when joining the sidemembers to extend or shorten the wheelbase or rear overhang. - for the application of reinforcing L section flitch on a side member that is to be modified as detailed below (v. Figure 2.3). Figure 2.3 91448 If electric welding has to be done on the vehicle, isolate the system, disconnect the control unit connectors, remove the power lead from the battery positive terminal and connect it to the chassis earth. Do not touch the electronic control unit connector pins. Should it be necessary to carry out welding operations close to a control unit, disconnect the control unit itself and remove it from its position.
Stresses on the chassis Print 603.93.431 Base - July 2006 Revi - June 2007 Range Permitted static stress on the chassis (N/mm2), σ amm on road Heavy duty (e.g. tipper and off-road) EuroCargo 120 80