CHASSIS MODIFICATIONS 2-27 E URO C ARGO E URO 4 - 5 Modifying the Rear Overhang 2.9 Modifying the Rear Overhang In modifying the rear overhang it must be borne in mind that such modification entails changes in the distribution of the payload on the axles relative to the loads established by IVECO. The limitations established by national laws must also be respected as well as the maximum distance from the rear edge of the body and the ground clearance prescribed for the tow hook and the underrun bar. The distance from the extremity of the chassis to the rear edge of the body must not, as a general rule, exceed 350 to 400 mm.
Should the bolted rear cross member be re-positioned, the same standard type of connections should be maintained (i.e. number of screws, dimensions, class of resistance). When re-positioning rear cross members originally fastened by rivets, these can be replaced by flanged nuts and bolts with same diameter or by class 8.8 hexagonal-headed screws with the next largest diameter. Use self-locking nuts (do not use bolts with a diameter larger than M14). When the installation of a tow hook is planned an adequate distance (approximately 350 mm) must be left from the rear cross member to the next nearest cross member for mounting and removing the tow hook wherever necessary.
If the modifications are carried out competently and in compliance with the specifications contained in this manual, the towable weight originally established may be retained. In any case responsibility for the work rests with those who have carried it out. 2.9.1 Authorisation The extension of the overhang at the rear of the chassis employing body overhang values up to 60% of the wheelbase and shortening down to the minimum serial value of each model require no specific approval by IVECO on condition that the operations are carried out in compliance with these instructions. 2.9.2 Reducing the Overhang When reducing the length of the rear overhang of the chassis (e.g.
in the case of tippers) the last cross member must be moved forward. If, when reducing the length of the overhang, the rear cross member is found to be located too near to an existing cross member, the latter must be removed if it does not affect the suspension supports. 2.9.3 Increasing the Overhang Various methods of increasing the length are given in Figs, 2.11 and 2.12. The connection of the added section is to be carried out in compliance with the specifications given in point 2.2.4. The frame may also be cut straight. The minimum dimensions of the reinforcements that are to be applied to the modified section are indicated in Fig. 2.5. Fig.
2.11 shows a typical method of extension for increases of 300 to 350 mm. In this case the reinforcing L-bars, which also serve to connect the cross member and the chassis frame, must be of the same thickness and width as the original gusset plate. The connection of the cross member and the plates, originally achieved with rivets, may be made with class 8.8 bolts with the next larger diameter. Modifying the Rear Overhang Print 603.93.431 Base - July 2006 Revi - June 2007