3-24 BUILDING & MOUNTING THE STRUCTURES E UROCARGO Euro 4/5 3.4.4 Light-duty service For these operations we recommend using vehicles with short wheelbases. In Table 3.6 are listed the longitudinal runners to be used. It is understood that the vehicle must be used for light duty on good roads, to transport freight with a low density and a low coefficient of friction. In addition to the above general specifications, in order to give the vehicles the required rigidity and stability, the following points must be observed: - Carefully check the chassis specifications (suspension, chassis, number of axles) to select a vehicle suitable for the body and its intended operation.
- The rear end of the subframe must be stiffened using box-type sections, crossbraces, cleat plates etc. - The rear tipping hinge must be placed as near as possible to the rear hanger bracket of the rear suspension. - In cases of vehicles having wheelbase longer than the standard tipper wheelbase, specially stiffened rear tipping support anchoring should be used so as to contain sag and ensure good stability during operation. The rear tipping angle should be between 45є and 35є while the user should be informed that the tipping should be done on as flat a surface as possible. - Use the most rigid rear suspension available and rear anti roll bars.
When parabolic rear springs are used, the stiffness should be increased using rubber elements that operate at static load. - For vehicles with pneumatic rear suspension, (for 6x4 and 8x4 tandems with four air springs for each axle), dump the air from the suspension during the tipping operation to allow the vehicle the greatest stability during tipping. It is important that this oper- ation takes place automatically from the tipping control. The resetting (raising) of the suspension can also be operated by the tipping control as the body is lowered.
- On vehicles with standard third axle or added third axle (6x2), an antiroll bar may have to be fitted onto the 3 rd axle depending on the type of installed suspension to improve the transverse stability. In addition to the above instructions, hydraulic or mechan- ical stabilisers may have to be installed for operation depending on the tipping support location in relation to the rear axles, to suspension types and to intended operation. The third axle must never lift when tipping.
Table 3.6 Fitting box-bodies Base - January 2008 Print 603.93.431 Minimum profile of subframe Strength modulus W (cm3) x Dimensions (mm) Model Wheelbase Yield limit of material used (N/mm2) 240 360 240 360 60E, 65E, 75E, 80EL T T ------ 26 ------ 100 x 50 x 5 80E, 90E, 100E T T 39 ------ 120 x 60 x 5 ------ 110EL, 120EL T T 57 ------ 140 x 60 x 6 ------ 120E T T ------ 31 ------ 100 x 60 x 5 130E - 140E T T 46 120 x 60 x 6 150E - 160E T T 69 46 160 x 60 x 6 120 x 60 x 6 180E T T 69 160 x 60 x 6