CHASSIS MODIFICATIONS 2-45 E UROCARGO Euro 4/5 Modifying the drive line 2.8 Modifying the drive line Following the modification of the wheelbase, work on the transmission as a general rule, is carried out on the basis of the trans- mission of a similar vehicle with approximately the same wheelbase. The maximum value of the inclinations of the propeller shafts used for standard production vehicles is to be retained. This rule must also be applied when any modifications to the suspension and rear drive axles are made. In cases of particular difficulty, the assistance of the company may be sought.
A diagram giving the length and inclination of the pro- posed new transmission must accompany the request. The purpose of the specifications contained in this manual is to ensure the proper functioning of the transmission, to limit its noise and to avoid the build-up of stress transmitted from the engine assembly. In no way does this diminish the responsibility of the body- builder for the work he has completed.
2.8.1 Permitted lengths The maximum operating lengths obtainable for both the intermediate shaft sections and the sliding shafts ”LG” or ”LZ” (see Figure 2.19) can be determined according to the external diameter of the tube existing on the vehicle and the maximum operating rotational speed (see formula). These are specified in Table 2.17. For the propeller shaft length specified in Table 2.17 when the tube diameter is not sufficient, a new shaft section with the same characteristics as the existing shafts must be used. As an alternative, in some cases the transmission shaft with a larger diameter tube can be used.
The tube diameter required can be determined in compliance with the required length and the maximum rotational speed, directly from Table 2.17. Figure 2.19 INTERMEDIATE SHAFT SLIDING SHAFT C C LZ LG SINGLE-SECTION SHAFT 116721 Modifying the drive line Print 603.93.431 Base - January 2008