Abstract: A power operated apparatus for permitting repositioning adjustments of a bogie position in its support of a trailer for enabling changes in the axle loading of the bogie by shifting the bogie forward or rearward on the trailer to meet highway axle loading requirements. The repositioning adjustments are selected through a power hook-up on the trailer and bogie through a system of switches to indicate whether the bogie is securely interlocked on the trailer and whether the bogie brakes are set and the pin connections to the trailer slider are retracted to allow tractor shift of the trailer while the bogie is held stationary by the application of the brakes. The power hook-up includes manual selection of the distance a bogie-trailer shift needs to be made in combination with a system of preselection of the distance in association with bogie brake application and indication of the condition of interlock or release of the pins relative to the trailer slider.