Power
Many forklifts are designed to run on propane gas. Propane-powered forklifts are easy to refill. The gas is stored in a pressurized tank on the truck's rear. The propane is pushed into the engine, where it is converted into vapor and then the vapor combines with air. The forklift throttle is utilized to control the flow of vapor. A spark plug ignites the mixture of air and vapor producing pressure which makes the pistons move. The pistons run the hydraulic pump and turn the wheels.
Since the types of forklifts that are operated by propane are clean burning and have low emissions, they are suitable to be utilized in warehouses and other buildings.
Hydraulics
The hydraulic system of the forklift is what enables it to raise and move very heavy things from place to place. Cylinders, a pump and tubes make up the hydraulic system. The pump forces dense fluid through the tubing and into the cylinders. The build up of pressure pushes a piston, which lifts the forks. When the operator lowers the forks, the hydraulic fluid flows out of the cylinders and back in the pump.
Steering
Where maneuverability is necessary, propane forklifts are the most suitable. Not like an automobile, a forklift utilizes its rear wheels to pivot, which enables the forklift to rapidly pivot on a tight radius.