OUTRIGGER BOX ASSEMBLY
The outrigger box assembly consists of an outrigger
2.5-inch (6.35 cm) extension cylinder, and the
beam, a 3.5-inch (10.4 cm) stabilizer cylinder, a
required hoses and mounting hardware.
THEORY OF OPERATION
When the outrigger extension is activated, it extends
the outrigger beam vertically. This sequence of
or retracts the outrigger beam within the outrigger
events provides for lifting and stabilizing the crane for
box. The jack cylinder is mounted to the end of the
beam. The jack cylinder applies force to
Extend the outrigger slightly to facilitate
attaching a lifting device to the outrigger beam.
Ensure any blocking material used is
From the opposite side of the outrigger
capable of supporting the weight of the
housing, remove the end cover.
outrigger beam. Do not allow it to tilt or
slide. Failure to do so may result in
Tag and disconnect the hydraulic lines at the
death or injury to personnel.
cylinder end of the extension cylinder. Cap all lines
approximately 600 lbs (272 kg).
Do not allow the end of the outrigger
extension cylinder to fall when the
Position the outrigger beam on the blocking
cylinder mounting shaft is removed. Use
an adequate soft support to cushion any
distance the rod will drop.
Remove the cotter pin securing the cylinder
mounting shaft. Remove the shaft and lay the
Inspect the outrigger beams for bends, evidence of
cylinder on the cutout in the outrigger beam.
cracks, or other damage. Check the outrigger beam
internally for hydraulic fluid, which may indicate a
Attach a suitable lifting device to the outrigger
leaking cylinder, loose connection, or damaged
Pull the outrigger beam out of the outrigger
box, readjusting the lifting attachment to prevent the
extension cylinder from falling to the ground when
the outrigger beam clears the outrigger box.