The turning radius on a lift truck is also known as the turning circle. This piece of information is vital for a machinery operator to have. It gives the operator the information of how much space is needed to turn the lift truck around. Like for example, a tighter turning radius allows the equipment to operate successfully in crowded areas and restricted places, therefore improving the maneuverability of the forklift. Drivers who are not aware of this measurement could cause damage to the property or to the machine.
Before checking the turning radius, check the steering geometry alignment and correct it if it needs adjustment. Start the test with having the trained operator inside the cab to control the machine's functions. A second person on the ground uses a spray bottle or a hose to wet the outside and inside of the unit's wheels. Then, drive the equipment in a complete circle with the wheels turned to the maximum angle. Repeat the process once and continue if necessary to wet the wheels.
After this measurement test has been accomplished, measure the watermarks left by the tires utilizing a tape measure, from the midpoint of the tire mark to a similar point across the diameter of the circle. For the outside turning diameter, measure the watermark left by the outside tires from the circle's one side to the opposite side of the circle. You could establish the inside turning radius by stretching the tape measure across the circle left by the interior tires. Then, divide these numbers in 2 in order to establish the turning radius. Be certain to note that the turning center is the midpoint of the circle's diameter.
To be able to establish the wall-to-wall turning diameter, drop a plumb line from the extreme outside radial extension on the machinery. After this is done, the next step is to find the point on the pavement directly beneath. This point to the turning center indicates the vehicle clearance radius. As a rule, wall-to-wall turning diameter is two times the machinery clearance radius.