M A E D A Mini-Crawler Crane Section 4 – CRANE OPERATION
1/2019 MC285C-3 4-57
Crane Operation Position
Use the crane operation position procedure when
switching operations after performing the
procedure in “Before Crane Operation” on page
4-56.
1. Move the winch lever (7) to the DOWN (push
forward) position and lower the hook until
anti-two block is not detected, but do not let
the hook block touch the ground.
Fig. 4-158
2. Move the boom lift lever (8) to the RAISE (pull
toward you) position and raise the boom to an
angle where the hook block is not
over-wound and not touching the ground.
Fig. 4-159
Fig. 4-160
Accelerator Lever Operation
WARNING! Tip Hazard. Do not operate the
crane at high speeds. Decrease the speed at
the beginning or near the end of an operation.
Change the speed to low or high according to
the load. The accelerator lever is also located
on the side of the travel levers. The position of
the accelerator lever on the side of the travel
levers also affects engine speed. Set the lever
to low idle when operating the crane.
For more information, see “Accelerator Lever” on
page 4-5.
Fig. 4-161
Hook Raising / Lowering
Operation
WARNING! The following safety messages
address a potential Crush Hazard while
operating the crane or boom:
• Verify that all personnel are a safe distance
away from the hoisted load once the load
starts to be hoisted. The boom can deflect
once a load starts to be hoisted. This will
cause the load to shift slightly forward.
WARNING! The following safety messages
address a potential Sudden Movement Hazard
while hoisting or lowering a load:
• Always remain seated in the operating
position when a load is hoisted. Lower the
load before leaving the machine.
• Always position the hook above the centre
of gravity of the load before hoisting. When
the load leaves the ground, stop hoisting
and check whether the load is stable. If
unstable, lower the load to the ground and
readjust the position of the hook to stabilise
the load while hoisting. Be sure the load is
stable before continuing to hoist the load.
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