Power
There are many types of forklifts which are powered by propane gas. Forklifts that utilize propane are very simple to refill. The gas is stored in a pressurized tank on the truck's back. 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 vapor flow. A spark plug ignites the vapor and air mixture producing pressure that moves the pistons. The pistons turn the wheels and power the hydraulic pump.
Propane powered forklifts are recommended for use inside warehouses and other buildings since they are clean burning with low emissions.
Hydraulics
What enables a forklift to lift and move heavy things from one place to another is the hydraulic system. Tubes, cylinders and a pump 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, which lifts the forks. When the operator lowers the forks, the hydraulic fluid flows out of the cylinders and back into the pump.
Steering
Where maneuverability is needed, propane forklifts are the most suitable. Unlike an automobile, a forklift utilizes its rear wheels to turn, which allows the forklift to pivot quickly on a tight radius.