Abstract: The fork-lift truck comprises a body (11) with one or more directional rear wheels and a mast (12) with a slide (13) sliding and hearing front forks for gripping and supporting the load. According to the invention, the truck comprises an intermediate frame (14), bearing the front wheels (21; 22) and oscillating with respect to the body (11) around a transversal axis (X-X) parallel to the axis (Y-Y) of the front wheels, as well as operating-cylinder means (30) interposed between said frame and said body. Said mast (12) is dismountably fastened to said intermediate frame (14), so as to be made to oscillate integrally with the frame itself around said transversal axis (X-X) by means of said operating-cylinder means (30) to swing forwards and rearwards, with both idle (21) and driving (22) front wheels, whereas it can be easily disassembled and assembled with respect to the intermediate frame (14).