High-lift pallet jacks and container tilters move large loads and hold them at an ergonomic position that reduces bending and straining when accessing their contents for unloading, inspection, assembly, and maintenance tasks. High-lift pallet jacks raise loads to a level working height. Container tilters raise loads to a working height and tilt them to ease access to their contents. These wheeled vehicles have forks that slide underneath or into openings on pallets, skids, and containers, and they have a hydraulic pump that moves the loaded forks. Pallet jacks and container tilters require less maintenance and can maneuver more easily in tight spaces than forklifts. Unless noted otherwise, pallet jacks and container tilters are for use on firm, level surfaces because they may roll back if used on inclines.