OPERATING CONTROLS AND PROCEDURES RT770E OPERATOR MANUAL
3-38 Published 04-04-2017, Control # 446-09
2. Slowly extend or retract the outrigger beam, allowing the
locking pin to drop into the hole in the top of the outrigger
beam, engaging the outrigger beam at the desired
length.
Stowing the Outriggers
1. Select the rear jack cylinders with the Stabilizer Selector
switches and hold the Extension/Retraction switch to
RETRACT until the rear jack cylinders have retracted
several inches.
2. Select the front jack cylinders with the Stabilizer Selector
switches and hold the Extension/Retraction switch to
RETRACT until the front jack cylinders have retracted
several inches.
3. Repeat steps 1 and 2 until the crane is resting on all four
wheels and the jack cylinder floats are several inches off
the ground
NOTE: Each jack cylinder float weighs approximately
32 kg (70 lb).
4. Release the locking levers and allow the floats to drop to
the ground.
5. Continue to retract the jack cylinders until they are fully
retracted.
6. Depress the desired Extension rocker switch on the
Outrigger Selector panel and hold the outrigger
Extension/Retraction rocker switch to RETRACT. The
appropriate outrigger beam should begin to retract.
NOTE: More than one outrigger may be retracted at one
time.
7. After all outriggers have been fully retracted, stow the
outrigger floats.
Stowing the Mid-Extend Lock Pin
1. Retract the outrigger extension/retraction cylinder.
NOTE: If the lock pin is wedged in the hole in the outrigger
beam, it may be necessary to jog the outrigger
extension/retraction switch slightly while pulling
upward on the pin.
2. Lift the lock pin and turn it 90° to its stowed position.
Swinging the Boom
NOTE: Automatic rear axle oscillation lockout will activate
when the boom swings right or left of the crane
centerline.
To swing the boom, the SWING control lever is pushed
forward, away from the operator, to swing CLOCKWISE, or
pulled back, toward the operator, to swing
COUNTERCLOCKWISE. Always operate the control lever
with a slow, even pressure. Use the swing brake foot pedal to
stop rotation, then position the swing brake switch to ON to
prevent further rotation.
Elevating the Boom
To elevate the boom, pull the BOOM (lift) control lever back,
toward the operator, and hold until the boom reaches the
desired elevation level.
DANGER
Crushing Hazard!
Keep feet and hands clear of floats when unlocking the
floats from the jack cylinders.
DANGER
Crushing Hazard!
Death or serious injury could result from being crushed by
moving machinery. Before activating swing, sound the
horn and verify that all personnel are clear of rotating and
moving parts.
Keep the area beneath the boom clear of all obstructions
and personnel when lowering the boom.
The operator must select the proper load chart and RCL
program for the outrigger position selected.
CAUTION
Machine Damage!
Never push or pull the swing control lever through neutral
to the opposite direction to stop swing motion. Use the
swing brake foot pedal to stop swing rotation.
DANGER
Crushing Hazard!
Keep the area above and below the boom clear of all
obstructions and personnel when elevating the boom.
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