The turning radius on a lift truck is also referred to as the turning circle. This information is important for a machine driver to have. It gives the driver the knowledge of how much space is required to turn the forklift around. Like for instance, a tighter turning radius enables the machine to successfully function in crowded areas and restricted places, thus improving the forklift's maneuverability. Drivers who are not aware of this measurement could cause damage to the property or to the equipment.
Make the necessary steering geometry alignment corrections prior to testing the turning radius. The test must start with an operator trainer helping inside the cab where they could assist to control the machine's functions. Another person 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 procedure once and if necessary, continue to wet the wheels.
Measure the watermarks left by the tires with a tape measure when your measurement test has been done. The watermark test begins 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 exterior tires from the circle's one side to the opposite side of the circle. 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 establish the turning radius. Be sure 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 machine in order to establish the wall-to-wall turning diameter. When this is done, next find the point on the pavement directly underneath. This point to the turning center indicates the machine clearance radius. As a rule, wall-to-wall turning diameter is two times the machine clearance radius.