the Load Chart

5. If the intended load is heavier than the value in the equivalent load zone the lift operation cannot be made.

Examples of Estimating the Lift Operation from the Load Chart

Note: The examples that follow are only for illustrative purposes. This chart does not relate to any particular machine. For lift operation, you should consult the load charts that are mounted in the operator station. The units on the load charts can be either kilograms or pounds. Each load chart has two parts: • The chart shows regions which indicate if certain capacities can be lifted. • The derate table shows the loads that can be lifted in the regions that are identified in the chart. Multiple work tools are included and the operator must select the work tool which is being used. The examples use the standard fork carriage.

Example 1

• The weight of the intended load is 1000 units. • The boom angle reference is 55 degrees. • The boom extension reference scale is at "D". With reference to the load chart, "X" is the point of intersection for the values of the boom angle reference and the boom extension reference. This point of intersection is located in the load zone that is marked "G". With reference to the derate table, the load zone capacity of the work tool is 2000 units. The intended load of 1000 units is less than the value in the load zone so the load chart indicates that the load is within the capacity of the machine.

Example 2

• The weight of the intended load is 3000 units. • The boom angle reference is 40 degrees. • The boom extension reference scale is at "B". With reference to the load chart, "Y" is the point of intersection for the values of the boom angle reference and the boom extension reference. This point of intersection is located in the load zone that is marked "E". With reference to the derate table, the load zone capacity of the work tool is 3000 units. The intended load of 3000 units is the same value as the value in the load zone so the load chart indicates that the load is at the maximum capacity of the machine.

Example 3

• The weight of the intended load is 600 units. • The boom angle reference is 22 degrees. • The boom extension reference scale is approximately 66 percent between "D" and full extension. With reference to the load chart, "Z" is the point of intersection for the values of the boom angle reference and the boom extension reference. This point of intersection is located in the load zone that is marked "K". With reference to the derate table, the load zone capacity of the work tool is 400 units. The intended load of 600 units is greater than the value in the load zone so the load chart indicates that the load is beyond the capacity of the machine. The lift operation must not

be attempted.

If the load chart indicates that the lift operation is within the capacity of the machine, attempt to make the operation but proceed with care. Remember that the load may weigh more than the estimate for the load. The load chart is for estimating the lift operation only.