Power
Numerous forklifts are made to run on propane gas. Forklifts which use propane are very simple 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 the vapor mixes with air. The throttle of the forklift is used to be able to control the flow of vapor. A spark plug ignites the mixture of vapor and air creating pressure which makes the pistons move. The pistons run the hydraulic pump and turn the wheels.
Since the kinds of forklifts that are powered by propane are clean burning and have low emissions, they are best to be used in other buildings and warehouses.
Hydraulics
The hydraulic system of the forklift is what enables it to lift and move really heavy things from place to place. A pump, tubes and cylinders make up the hydraulic system. The pump forces dense fluid in the tubing and into the cylinders. The build up of pressure pushes a piston, that raises the forks. When the forks are lowered by the operator, 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 a car, a forklift makes use of its back wheels to turn, which allows the forklift to turn quickly on a tight radius.