2-48 CHASSIS MODIFICATIONS E UROCARGO Euro 4/5 The intermediate shaft and the inclination of the rear axle case must be aligned accurately. The difference in their inclination relative to the engine-clutch-gearbox axis must not vary more than 1 ° . This can be achieved by fitting wedges between the rear axle and the springs, or by adjusting the rear axle reaction bars. The inclination of the rear axle must not exceed 5.5 ° .
When, with a loaded vehicle, the rear axle flange is at a level which is lower than that of the gearbox flange, care must be taken to ensure that the inclination of the differential housing and of the driven shaft are greater than the inclination of the engine-gearbox axis. On the other hand, if, with a loaded vehicle, the rear axle flange is at a level which is higher than that of the gearbox flange, the inclination of the differential housing and of the driven shaft must be less than the inclination of the engine-gearbox axis. When lengthening the wheelbase is substantial, it may become necessary to fit a supplementary intermediate shaft as shown in Figure 2.21.
In this case the same inclination must be maintained between the engine-gearbox axis, the second intermediate shaft and the axis of the differential housing. Figure 2.21 91452 1. Engine, clutch, gearbox axis - 2. 1 st intermediate shaft - 3. Intermediate shaft support - 4. 2 nd intermediate shaft - 5. Propeller shaft with splined end - 6. Inclination of rear axle case (static load) - 7. Inclination of rear axle case (max. compression) - 8. Inclination of rear axle case (unladen) - 9. Gearbox, 2 nd intermediate shaft and rear axle case axis must have same inclination.
Elastic supports must be fitted with the aid of supporting plates, at least 5 mm thick (see Figure 2.22), connected to cross-members having the same characteristics as those specified by IVECO. When reducing the wheelbase it is recommended that the intermediate shafts are removed if the length of the splined shaft is less than approximately 800 mm. Figure 2.22 1. Intermediate shaft - 2. Support bracket - 3. Backing plate - 4. Support of intermediate shaft 91453 If the drive line consists of a single shaft the inclination of the axle housing must be the same as the inclination of the engine-gearbox axis. Modifying the drive line Base - January 2008 Print 603.93.431