Abstract: This invention relates to a mounting of the pivot shaft for wheel support whereby the alignment of adjustment of vehicle wheels, in particular as to the camber, can be positively accomplished and maintained. The pivot shaft on which the pivoted arm is supported is mounted transversely in a frame of generally U-shaped cross section slidable in a box open at both ends, which latter is fixedly mounted on a bolt through the channel frame of the vehicle; the U-shaped frame for the pivot shaft has a threaded shaft extending from its base axially of the box and through a transverse plate fixed in the box and is held in place by a rotatable nut so held on the fixed plate that when the nut is turned the threaded shaft will travel through the nut and accordingly slides the U-shaped frame and the pivot shaft in the box in the direction desired for the adjustment of the wheel alignment.