Abstract: A manufacturing method for a vehicle capable of reducing man-hours, improving worker posture, and increasing worker efficiency in a step for mounting components on a frame as part of vehicle assembly steps. Some or all components such as tanks, pipes and wires are mounted on a frame 3 before assembling the frame 3. Namely, some or all components are first mounted on side rails, which are elements of the frame 3, and cross members 2 are then assembled to the side rails 1. Side rail holding stands are disposed on a working surface plate to hold a pair of side rails 1 in parallel and at a prescribed height, and in accordance with advancement of work, rotate each of the side rails 1 about a longitudinal axis thereof. Each side rail is rotated hydraulically by a prescribed angle (approximately 90 degrees) about a longitudinal axis thereof.

Abstract: A manufacturing method and assembly assisting device for a vehicle capable of reducing man-hours, improving worker posture, and increasing worker efficiency in a step for mounting components on a frame as part of a vehicle assembly step. Some or all of components such as tanks, pipes and wires are mounted on a frame 3 before assembling the frame 3. Namely, some or all of components are first mounted on side rails, which are elements of the frame 3, and cross members 2 are then assembled to the side rails 1. Side rail holding stands disposed on a working surface plate hold a pair of side rails 1 in parallel and at a prescribed height, and in accordance with advancement of work, rotate each of the side rails 1 about a longitudinal axis thereof. Each side rail holding stand includes a means for hydraulically rotating the held side rail by a prescribed angle (approximately 90 degrees) about a longitudinal axis thereof, and a means for controlling the rotating means.

Abstract: An axle module is obtained by coupling an axle member and a pair of leaf springs in the same vertical relationship as in the actual state of use. At such time, when the axle member is disposed on a work stand, pins passing through holes provided in the right and left leaf springs for mounting to a vehicle body are inserted prior to tightening U-bolts used to mount the leaf springs. In addition, by applying a small force, the axle member can be moved in-plane within a predetermined range relative to the leaf springs. Furthermore, the tightening of nuts is carried out by moving tightening tools disposed on a carriage to a position underneath the tips of the U-bolts subject to tightening and then raising and rotating sockets installed in the tightening tools.