Purpose built mobile vehicle designed to be an easy, fast and safe method to replace and service the swing shafts on P&H 2300, 2800 and 4100 Large Mining Shovels. A big plus for this product versus other conventional methods, is its operator work deck. The work deck provides maintenance personnel with a safe and effective area to complete the swing shaft replacement. The swing shaft changer’s base comes complete with a hydraulic operated scissor lift allowing the work to be completed from directly below the work area as opposed to the use of traditional telescopic handlers and custom cribbing. One other benefit is ability to positon the swing shaft into place through the pitch, roll and yaw motions of the pinion lift table’s cradle.