Method of assembling railcar bogie and wheel base fixing jig for use therein

A wheelbase fixing jig for use in assembling of a railcar bogie,

• the wheelbase fixing jig being configured to position a pair of axle box devices in order that the pair of axle box devices support a plate spring extending in a car longitudinal direction, the pair of axle box devices being arranged away from each other in the car longitudinal direction, the wheelbase fixing jig being configured to be detached from the pair of axle box devices during a manufacturing process of the railcar bogie,
• the wheelbase fixing jig extending in the car longitudinal direction and comprising a pair of locking portions located at both respective longitudinal direction end portions of the wheelbase fixing jig, the pair of locking portions being locked to the respective axle box devices, wherein:
• the locking portions of the wheelbase fixing jig are configured to lock to core rods respectively included in the axle box devices, the locking portions being spaced apart in the car longitudinal direction by a distance;
• and
• the distance between the locking portions is the same as a distance between groove portions in side walls of a bogie frame that are configured to respectively attach to the core rods after detachment of the wheelbase fixing jig from the core rods.