The forklift's turning radius is also referred to as the turning circle, that is vital information for the driver 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 tight places, thus enhancing the forklift's maneuverability. Operators 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 begin with an operator trainer helping inside the cab where they could assist 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 unit's wheels. After that, drive the machine in a whole circle with the wheels turned to the maximum angle. Repeat the process once and continue if necessary to wet the wheels.
When this measurement test has been completed, 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 the circle's one side to the circle's opposite side. The inside turning diameter can be established by stretching the tape measure across the circle left by the inner tires. Next, divide these numbers in 2 to be able to determine the turning radius. Be sure to note that the turning center is the midpoint of the diameter of the circle.
Drop a plumb line from the extreme outside radial extension on the machinery in order to determine the wall-to-wall turning diameter. When this is completed, next find the point on the pavement directly underneath. This point to the turning center indicates the clearance radius of the vehicle. As a rule, wall-to-wall turning diameter is two times the machine clearance radius.