Motor vehicle with boom lift and improved power transfer device

In a motor vehicle having a frame including longitudinal side members, a cab, a longitudinally positioned engine located laterally with respect to said cab, said engine having an output shaft, a transmission operatively connected to said output shaft of said engine, said transmission also having an output shaft, a telescopic lift arm which, in a front working position, is located between said cab and said engine, and front and rear axles receiving motive power from a pair of propeller shafts, the improvement comprising:

• a power transfer device defined by at least four gears arranged in series and housed in a casing, said casing supporting shafts associated respectively with said gears, said power transfer device having a substantially rectilinear shape operatively connecting said transmission output shaft with said pair of propeller shafts, a first horizontal plane through a longitudinal axis of symmetry of said engine output shaft is located upwardly, with respect to the ground, of a second horizontal plane containing a longitudinal axis of symmetry through said axles and centrally through said power transfer device, said second horizontal plane being located below said longitudinal side member,
• a third plane extending through said engine output shaft and said transmission input shaft at a 45° angle to said second horizontal plane whereby said propeller shafts are located below said longitudinal side members and said engine, and said longitudinal side members are substantially identical as regards their longitudinal sides, and
• said transmission and said power transfer device are integral with each other and form a unit.