TM 5-2420-230-10
BACKHOE OPERATION
Contents
Para
Page
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing to Use the Backhoe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backhoe Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tow Hitch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Joystick Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backhoe Travel Stop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stabilizer Arm Turnbuckles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
When operating the vehicle in the construction mode, i.e., filling dump trucks, stockpiling, and
backhoe operations, avoid working on side slopes greater than 5 percent. Failure to comply may
result in personnel injury and/or damage to equipment.
Caution must be exercised during backhoe operations on side slopes. Always operate the backhoe
toward the uphill side of the worksite. Digging/excavation operations must be conducted as close to
vehicle centerline as possible. Do not raise the bottom of a loaded bucket more than 1 ft. (30 cm)
above the ground. Avoid abrupt changes in position of the backhoe or bucket. Failure to comply
may result in personnel injury and/or damage to equipment.
Place the backhoe in the stowed position whenever travel speeds exceed 12 mph (20 km/h). Failure
to do so could result in personnel injury and/or damage to equipment.
The Interim High-Mobility Engineer Excavator (IHMEE) is fitted with a Case Model 580M Backhoe. The backhoe is
center-mounted with a two-piece boom/dipper and a quick-release bucket link. The unit has arm-type stabilizers and is fitted
with hydraulic controls and lines for power attachments.
The backhoe is designed for digging below
ground level and for general earth-moving
functions, such as trenching, truck loading, and
material handling. The backhoe and bucket are
used for carrying the spare wheel assembly.
The main components of the backhoe are:
(1)
Dipper
(2)
Bucket
(3)
Boom
(4)
Stabilizers
(5)
Auxiliary outlets