work site so that most of the work will be performed over
2-19. Backhoe Operation
the rear of the carrier. Dumping or unloading should be
done over the sides of the carrier. if possible. Set the
a. General. The model M320T2 truck crane, with
carrier brakes, and extend and set the outriggers
the backhoe attachment installed and reeved as
described in paragraph 2-8, is used where the digging
level is below machine grade, the area to be worked is
c. Operating Cycle. The backhoe operating cycle
relatively small, requires the movement of a minimum
consists of four steps; filling the dipper. Hoisting,
amount of material, and the material must be dumped
swinging and dumping. During the backhoe operation.
accurately. The backhoe attachment is used in
tension must be maintained in both the front and rear
preference to the dragline attachment when precise
drum lines at all times. since they are interdependent.
control is required, and when it is required that the walls
Start the crane engine (para 2-11) and operate the
of the excavation be straight.
dragline as shown on figure 2-40.
b. Positioning the Carrier. Back the carrier to the
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