Manitowoc Grove RT770E Operator's Manual page 103

RT770E OPERATOR MANUAL
Outrigger Selector Panel and hold the Outrigger
Extension/Retraction
appropriate jack cylinder begins to move.
Extend each jack cylinder, positioning the float as
necessary, until the locking levers of the float engage the
jack cylinder barrel.
NOTE: More than one jack cylinder can be extended at a
time.
5. Extend the front jack cylinders approximately 8 to 10 cm
(3 to 4 in).
6. Extend the rear jack cylinders approximately 8 to 10 cm
(3 to 4 in).
NOTE: If crane is equipped with tilting cab, ensure cab is in
the lowered position before leveling machine.
7. Repeat step 4 until all wheels are clear of the ground
and the crane is level as indicated by the bubble level
indicator located on the right side of the cab.
NOTE: If it is suspected that the bubble level indicator is
out of adjustment, verify and adjust the bubble level
u s i n g t h e p r o c e d u r e s u n d e r B u b b l e L e v e l
Adjustment, page 3-36.
DANGER
Tipping Hazard!
The mid-extend outrigger beam lock pin must be engaged
before operating on any beam from the mid-extend
position.
For cranes not equipped with an Outrigger Monitoring
System, the operator must select the proper load chart
and RCL program for the outrigger position selected.
NOTE: For cranes equipped with an Outrigger Monitoring
System, outrigger positions are automatically
monitored through the RCL. Refer to Outrigger
Monitoring System (OMS) (Optional—Standard in
North America), page 3-37.
Outrigger Monitoring System (OMS) (Optional—
Standard in North America)
The Outrigger Monitoring System (OMS) aids the operator in
accurately programming the Rated Capacity Limiter (RCL)
by automatically identifying the horizontal position of each
outrigger beam. The OMS uses four sensors, one per
outrigger beam, to indicate when an outrigger beam is
positioned to one of three pre-defined locations, including
fully retracted, mid-extend, and fully extended.
Set up of the outriggers is the same for cranes equipped with
OMS; refer to Setting the Outriggers, page 3-36.
Grove
Switch to EXTEND.
Published 04-04-2017, Control # 446-09
OPERATING CONTROLS AND PROCEDURES
If the crane is setup on outriggers and "On Outriggers" is
The chosen when programming the RCL (Figure 3-18), then the
OMS indicates to the RCL the horizontal position of each of
the four outrigger beams. Based on this information, the RCL
will default to the most conservative outrigger beam
configuration; that is, if three outriggers are fully extended
and one is retracted, the RCL will select retracted as the
outrigger configuration. A confirmation of this outrigger
configuration is all that is needed (Figure 3-19). Refer to the
Rated Capacity Limiter Operator Handbook for detailed
instructions.
NOTE: Figure 3-19 depicts all four outrigger beams in the
mid-extend position as indicated by the OMS and
RCL.
8127-1
8127-2
Engaging the Mid-Extend Lock Pin
1. Turn the locking pin 90° from its stowed position and
allow the pin to rest on top of the outrigger beam.
NOTE: It may be necessary to jog the outrigger extension/
retraction switch slightly to ensure proper pin
engagement.
3
FIGURE 3-18
FIGURE 3-19
3-37