unstable soil. Earth material that, because of its nature or the influence of related conditions, cannot be depended upon to remain in place without extra support, such as would be furnished by a system of shoring.
There are many areas to focus on when performing forklift maintenance. The gas engine or electric motor, the hydraulic system and the tires are frequently involved in specialized forklift maintenance programs. In many locations, it is required that all forklift maintenance and repair be completed by a trained and certified mechanic, such as those certified with the Occupational Safety and Health Administration or OSHA in the United States.
Do not raise or lower the fork unless the lift truck is stopped and braked. Lift loads straight up or tilt back slightly. Do not lift a load that extends above the load backrest unless no part of the load can possibly slide back toward the operator. Attend the controls of the forklift truck when a load is elevated. In other words, the operator must stay on the forklift when the load is in a raised position.