2.20 SLEWING OPERATION • Check the safety around and honk the horn before slewing. • Operate the slewing lever as slowly as possible. Start smoothly, slew at low speed, and stop gently. Sudden lever operation especially while hoisting a load will cause the load to swing, causing the loss of stability in the machine, and thus may break the crane or overturn the machine. • Where it is necessary to slew the crane 360-degree with a hoisted load, all the outriggers must be extended to its basic direction as shown in the diagram on the right. Even though outriggers are fully extended as shown, operations to the left or right require extra caution as there is less stability. • In cases where the outriggers installation is restricted and full extension as shown in the diagram on the right is not possible, ensure the operable and inoperable areas are known in advance, before starting crane operations. • Depending on how outriggers are extended, the hoisted load may hit an outrigger during the slewing operation, breaking the crane or overturning the machine. Be careful not to let the hoisted load hit an outrigger.
Operate the slewing lever (1) as follows. • Slew counter clockwise: Push the lever forward to the “LEFT” side. • Neutral: Release your hand from the lever. The lever returns to the NEUTRAL position and the slewing stops. • Slew clockwise: Pull the lever toward you to the “RIGHT” side.
NOTES Adjust the crane slewing speed with the slewing lever and the stroke of the acceleration lever.
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