The lift truck's turning radius is also called the turning circle, that is vital information for the operator to have. It gives the driver the information of how much space is needed to turn the forklift around. For instance, a tighter turning radius allows the machine to function successfully in congested areas and tight places, therefore enhancing the forklift's maneuverability. Operators who are not aware of this measurement may cause damage to the equipment or to the property.
Make the necessary steering geometry alignment corrections prior to testing the turning radius. The test should begin with an operator trainer assisting inside the cab where they can help to control the machine's functions. Another person on the ground uses a spray bottle or a hose to wet the outside and inside of the unit's wheels. Next, drive the machinery in a complete circle with the wheels turned to the maximum angle. Repeat the process once and continue if necessary to wet the wheels.
Measure the watermarks left by the tires using a tape measure after your measurement test has been completed. The watermark test starts 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 circle's opposite side. You could establish the inside turning radius by stretching the tape measure across the circle left by the interior tires. Next, divide these numbers in 2 to be able to establish the turning radius. Be certain 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 vehicle in order to determine the wall-to-wall turning diameter. Once this is done, next locate the point on the pavement directly underneath. This point to the turning center indicates the machinery clearance radius. As a rule, wall-to-wall turning diameter is twice the clearance radius of the vehicle.