TM 10-3950-672-10
5-3.13 Lowering the Boom.
WARNING
Before lowering the boom, make certain the area beneath the boom is clear of all
obstructions and personnel.
WARNING
Long cantilever booms can create a tipping condition even when unloaded and in an
extended and lowered position.
WARNING
When lowering the boom, lower the cable at the same time to prevent two-blocking the boom
nose and the hook block.
WARNING
The closer the load is carried to the boom nose, the more important it becomes to let out
hoist cable as the boom is lowered.
a. To lower boom, push LIFT control lever (10, Figure 5-1) forward (away from the operator) to DOWN
position and hold until boom is lowered to desired position.
b. To stop boom, return LIFT control lever (10) to its neutral position.
5-3.14 Extending the Boom.
WARNING
When extending the boom, let out cable simultaneously to prevent two-blocking the boom
nose and hook block.
WARNING
Check the load chart for maximum load at given radius, boom angle, and length before
extending boom with a load.
5-32
