An L-shaped sleeve is allowed to slide on a rectangular rail. The rail is inclined by one degree relative to the horizontal (rotated about global X-axis), which produces the sliding motion. The L-shape of the sleeve induces both axial and side torques in the slider joint used to connect the two parts.
The two videos below show the assembly motion. The Earth's gravity points to global negative Y-axis. The left video shows the slider joint force and torque expressed in the reference frame of the sleeve. The video on the right shows the same vectors, this time expressed in the reference frame of the rail.