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 knowledge of how much space is required to turn the lift truck around. Like for instance, a tighter turning radius enables the machine to function successfully in crowded areas and restricted places, thus improving the maneuverability of the lift truck. Drivers who are not aware of this measurement could cause damage to the machinery or to the property.
Make the necessary steering geometry alignment corrections prior to testing the turning radius. The test should start with an operator trainer helping inside the cab where they can help to control the equipment's functions. Another individual on the ground utilizes a spray bottle or a hose to wet the inside and outside of the unit's wheels. Then, drive the machinery in a whole 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 utilizing a tape measure after your measurement test has been completed. The watermark test begins from the tire mark's midpoint to a similar point across the circle's diameter. For the outside turning diameter, measure the watermark left by the outside tires from one side of the circle to the opposite side of the circle. The inside turning diameter can be established 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 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 machine in order to establish 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 machine clearance radius. As a rule, wall-to-wall turning diameter is twice the clearance radius of the machinery.