CHASSIS MODIFICATIONS 2-43 E URO C ARGO E URO 4 - 5 Where an auxiliary frame is required as reinforcement, (see section 3.3.2) the body mounting brackets on the chassis (if any) should be used for the attachment. An alternative method of attachment is shown in section 3.4.1 and those that follow it. We recommend using a shear resistant connection in the area of the rear overhang up to approximately the mid wheelbase (in any case up to no more than 2 m from the front axle) (see Figure 2.20). The fitting of reinforcing plates directly onto the flanges of the side members, using holes filled with welded material is not permitted.
This is to avoid affecting the strength of the original sections caused by poor welding. This procedure is only permitted in special cases with specific IVECO authorization when there are proven difficulties in subsequent body applications. The reinforcement on the chassis can be omitted provided the following static stress values are not exceeded: Any limitations, imposed by national laws must be complied with. If the installation is unavoidable, because of the deterioration of the material’s properties due to the welding process, in checking the load-effects acting on the various sections, it is advisable to assume a reduction of ca 15% in the strength of the material.
As a general rule the thickness of the reinforcing plate must not exceed that of the flange of the original chassis. The mounting must be carried out by skilled personnel and the bodybuilder will be responsible for any damage to the frame resulting from poor workmanship. 2.11.3 Fitting a rear or central axle on models ML150 and ML180 The following modifications are obligatory when installing a third rear or centre axle on the ML150 and ML180: - replacement of ABS 3-channel control unit with ABS 4-channel control unit; - addition of ABS solenoid valve, bringing total number of solenoid valves to 4:
two on the front axle and two on the rear axle; - adoption of suitable brake cylinders on rear axle for parking brake; - adaptation of braking system. One of the two rear axle ABS solenoid valves must control the right wheels of the drive and additional axles and the other the left wheels. ML150E and ML180E models have optional No. 4667, for the installation of a third rear axle. With this option, the three conditions stated above are already complied with. In any event, the third axle must be installed in accordance with the technical standards, available on request from the local IVECO office that approves the installation.
If the additional axle is being installed in a central position, take particular care to ensure that the axle does not interfere with the propeller shaft. 2.11.4 Installing a Rear Supplementary Axle The installation of a rear supplementary axle generally implies that the chassis overhang should be lengthened, the extension must be carried out in compliance with the specifications given in point 2.9. relating to the modifications of the chassis, leaving the reinforcements mentioned above unaffected.
When an additional axle is added to the overhang with a section depth smaller than the depth within the wheelbase area the adjustment of the section to give a higher value could be a solution towards reducing the stress arising from the conversion. Installing a Supplementary Axle 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