OPERATING PROCEDURES
Revised: October 20053 - 8RT700
Before attempting to swing the upperstructure, make
sure the swing brake is not set and the swing lock is not
engaged. Be certain that no obstructions will block the
swing.
When ready, try for a smooth, controlled, safe swing.
The swing should be SLOW. Start the swing SLOWLY
and allow the load to build up only enough momentum
to carry it through to the point where it is to be lowered.
Begin slowing the swing in advance of the point where
the load is to be lowered. Slow the swing GRADUAL-
LY, so that it appears to “coast” to a stop over the de-
sired spot.
GRADUALLY slow the swing by use of the joystick.
First, move the joystick to the neutral position and then
VERY SLOWLY into the opposite swing direction posi-
tion as required to slow the swing.
Apply the swing brake, with the foot pedal, when the
swing is stopped or when emergency situations dictate
that the swing be terminated abruptly.
If properly executed, the load will hang motionless
when the swing is terminated. If the load is oscillating,
the swing was made too rapidly and/or stopped too
abruptly.
Stopping the swing too abruptly will cause the load to
oscillate and impose side loads on the boom. Because
side loading can damage boom, ALWAYS START
AND STOP SWINGS GRADUALLY.
Never pull sideways with a crane boom. Crane booms
are not designed for excessive side pull and may col-
lapse if subjected to excessive side loading.
6. Extend the boom to the desired length. Do not ex-
tend the boom further than necessary to perform
the lift.
EXTEND the boom by tilting the extend-retract pedal
FORWARD. RETRACT the boom by tilting the pedal
BACK
While extending the boom, be sure to pay out sufficient
hoist rope to prevent the hook block from being drawn
up to the boom peak. The force of the extend cylinders
can easily break the hoist line, dropping the hook block
and load which may result in personal injury or proper-
ty damage.
The boom extend function on this crane has two posi-
tions and two speeds. When the pedal is all the way
forward, the regenerative mode provides increased
speed. With the pedal approximately one half of the
way forward, increased “PUSH” is available at reduced
speed.
7. Lower the hook block to the load and fasten the
hook.
Make certain the hook is properly engaged with the
slings, or lifting device employed to make the lift. Be
certain the hook latch is not supporting any of the load.
Refer to warning tag on hook block.
Hoisting or lowering of the load with the winch is con-
trolled by the right joystick. LOWER the load by moving
the joystick FORWARD and RAISE the load by moving
the joystick BACK. Improved control is obtained by op-
erating the engine at low speed while “metering” the
control. Always actuate and release this lever slowly to
minimize dynamic effects of the load and to prevent
“birds-nesting” of the cable on the winch drum.
To shift the winch into the high-speed mode the winch
switch on the front of the joystick must be pressed.
When slowing the winch, release switch to bring the
load to a gradual stop. When the winch is operated in
this mode, available line pull is reduced to approxi-
mately one half of the normal value. NOTE: Two speed
winch will operate in low speed mode ONLY if operat-
ing telescope, auxiliary winch or a clam bucket simul-
taneously with the winch functions.
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