Power
There are numerous types of forklifts which are powered by propane gas. Propane-powered forklifts are really easy to refill. The gas is stored in a pressurized tank on the rear of the truck. 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 utilized to be able to control the vapor flow. A spark plug ignites the air and vapor mixture creating pressure that makes the pistons move. The pistons power the hydraulic pump and turn the wheels.
Propane powered forklifts are suggested for use inside other buildings and warehouses since they are clean burning with low emissions.
Hydraulics
The forklift's hydraulic system is what allows it to lift and transport really heavy objects from place to place. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid through the tubing and into the cylinders. The pressure build up 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
Propane forklifts work well where maneuverability is necessary. Not like an automobile, a forklift uses its back wheels to pivot, that enables the forklift to pivot quickly on a tight radius.