The turning radius on a lift truck is also referred to as the turning circle. This piece of information is essential for a machine operator to have. It gives the driver the knowledge of how much space is needed to turn the lift truck around. Like for instance, a tighter turning radius allows the machine to work successfully in crowded areas and restricted places, therefore improving the lift truck's maneuverability. Drivers who are not aware of this measurement may cause damage to the property or to the machine.
Prior to testing the turning radius, check the steering geometry alignment and correct it if it needs adjustment. Start the test with having the trained driver in the cab to control the equipment's functions. Another individual on the ground utilizes a spray bottle or a hose to wet the outside and inside of the unit's wheels. Then, drive the machine in a complete circle with the wheels turned to the maximum angle. Repeat the process 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 completed. The watermark test starts 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 exterior tires from one side of the circle to the circle's opposite side. The inside turning diameter can be determined by stretching the tape measure across the circle left by the inner tires. Next, divide these numbers in 2 to be able 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 vehicle in order to determine the wall-to-wall turning diameter. When this is accomplished, 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 twice the machine clearance radius.