The forklift's turning radius is also referred to as the turning circle, which is essential information for the operator to have. It gives the driver the information of how much space is needed to turn the lift truck around. Like for instance, a tighter turning radius enables the machinery to successfully function in tight places and crowded areas, therefore improving the forklift's maneuverability. Operators who are not aware of this measurement can cause damage to the property or to the equipment.
Before checking the turning radius, check the steering geometry alignment and correct it if it needs adjustment. Begin the test with having the trained driver in the cab to control the machine's functions. Another person on the ground uses a spray bottle or a hose to wet the inside and outside of the unit's wheels. After that, drive the machinery in a complete circle with the wheels turned to the maximum angle. Repeat the process once and if necessary, continue to wet the wheels.
When this measurement test has been accomplished, measure the watermarks left by the tires with a tape measure, from the midpoint of the tire mark to a similar point across the circle's diameter. For the outside turning diameter, measure the watermark left by the outside tires from one side of the circle to the circle's opposite side. You can determine the inside turning radius by stretching the tape measure across the circle left by the inner tires. After that, divide these numbers in 2 in order to determine the turning radius. Be certain to note that the turning center is the midpoint of the circle's diameter.
Drop a plumb line from the extreme outside radial extension on the vehicle in order to determine the wall-to-wall turning diameter. Once this is accomplished, next locate the point on the pavement directly below. This point to the turning center indicates the machinery clearance radius. As a rule, wall-to-wall turning diameter is twice the equipment clearance radius.