CHASSIS MODIFICATIONS 2-41 E UROCARGO Euro 4/5 2.7.3 Application of a rear or central axle on models ML150 and ML180 To apply a third rear or central axle on vehicles ML150 and ML180 it is obligatory to make the following changes: - change the 3-channel ABS control unit with the 4-channel ABS control unit; - add an ABS solenoid valve; in this way there are 4 solenoid valves, two for the front axle and two for the rear axle; - use suitable brake cylinders on the rear axle for the parking braking; - adjust the brakes system. It is necessary for one of the two rear axle ABS solenoid valves to manage the right wheels of the driving axle and of the added axle and the other one the left wheels.
For the ML150E and ML180E models there is the optional device 4667, ready for the application of a third rear axle. When there is this optional device the conditions stated in this paragraph are already in place. In any case, the application of a third axle must be done according to the technical standards, to be requested from the IVECO Function that issues approvals. In the case of applying an added axle in the central position, special attention must be paid to avoid any interference between this axle and the propeller shaft.
2.7.4 Application of a rear axle The application of a rear axle generally requires extending the overhang of the chassis frame, it must be performed as described in point 2.5 related to changes to the chassis frame, with it still being necessary to apply the above-mentioned reinforcements. For vehicles with a chassis frame that in the rear overhang has a section of a shorter height than those in correspondence with the wheelbase, by applying an additional axle the adjustment of the section to the greater value can be a helpful solution for limiting the stresses due to the conversion. Figure 2.17 shows an example of applying a rear axle with overhang extension.
Figure 2.17 1 Additional added axle 2 Extension of the overhang 3 Reinforcements for the change to the chassis frame 4 Connections 5 Reinforcement section 91539 Installing a supplementary axle Print 603.93.431 Base - January 2008