The turning radius on a lift truck is also referred to as the turning circle. This piece of information is important for a machine operator to have. It gives the driver the information of how much space is required to turn the forklift around. For example, a tighter turning radius enables the machine to successfully operate in crowded areas and restricted places, thus improving the maneuverability of the forklift. Operators who are not aware of this measurement can cause damage to the property or to the machinery.
Before testing the turning radius, check the steering geometry alignment and correct it if it requires adjustment. Begin the test with having the trained driver inside the cab to control the machine's functions. Another individual on the ground uses a hose or a spray bottle to wet the inside and outside of the model'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 done, measure the watermarks left by the tires with a tape measure, from the tire mark's midpoint to a similar point across the diameter of the circle. For the outside turning diameter, measure the watermark left by the exterior 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. 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 diameter of the circle.
To be able to establish the wall-to-wall turning diameter, drop a plumb line from the extreme outside radial extension on the vehicle. After this is accomplished, the next step is to locate the point on the pavement directly underneath. This point to the turning center indicates the clearance radius of the machine. As a rule, wall-to-wall turning diameter is twice the equipment clearance radius.