Tadano GT-550E-2, Operation And Maintenance Manual

Page: 96 / 100

Extending the Outriggers
[NOTICE]
◆ If an outrigger or the front jack is stowed after
registration of outrigger status, the registered status
is erased. In this case, register the outrigger status
again before starting crane operation.
Full Extension Procedure
1.
Remove all four lock pins.
2.
Place the two individual control levers of the outrig-
gers on your side to EXTENSION. Then move the
extend/retract control lever toward EXT. to extend the
outrigger beams fully.
◆ The figure below shows an outrigger on the left side
of the carrier.
3.
Insert the lock pins to lock the extended outrigger
beams.
T038330E
60
Outriggers Outriggers
Outriggers with improperly extended beams
cannot assure safety. Adhere to the rated lifting
capacity table, which specifies the correct beam
length for different lifting capacities. Make it a rule
to fully extend the beams whenever possible even
on a crane which is rated for operation on
outriggers at half extension.
The machine can sometimes remain level even
when it is supported on only three jacks.
Operating the machine in such a condition is very
dangerous. After extending the outriggers, make
sure that all outrigger floats are in contact with
the ground. Any unseated float must be lowered
so that it is in firm contact with the ground.
If the crane is not level on the ground, the load
radius will increase when the load is swung
toward the lower side. In the worst case, this
could cause the crane to overturn. Always use the
bubble levels to make sure that the crane is level
after extending the outriggers.
Operating on outriggers when any tires are in
contact with the ground will reduce machine
stability. Extend jacks and, if necessary, place
blocking under the outrigger floats to raise the
tires clear of the ground.
The outrigger beams may accidentally retract
during operation if they are not properly locked
with the lock pins. Be sure to secure the outrigger
beams with the lock pins whenever they are
extended.
WARNING
When extending four outrigger beams
simultaneously, check the other side of the carrier
well before operation.
WARNING
T30108
EXTENSION
JACK FRONT JACK EXT.
RET.
T30109E