Komatsu PC450-8, Operation & Maintenance Manual, Page: 444 / 474

DEMOLITION DIGGING BOOM INSTALLATION AND REMOVAL
HIGH REACH DEMOLITION EQUIP-
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15. Operate the "Attachment Rotate" function. Left Hand (LH)
button makes the pins retract, Right Hand (RH) button makes
the pins extend.
CAUTION
Check that the pins are fully retracted before moving the
machine.
WARNING
Never use ANY other control to cause the hydraulic pins to
move. This could cause injury, damage or death.
16. Lower the first boom section to settle the Stand B onto the
ground. When Stand B is settled onto the ground, simulta-
neously lower the first boom section and reverse the machine
to disengage the upper pin from the demolition equipment.
Reverse the machine away from the demolition equipment.
17. Ensure that all exposed bores, pins, hoses and tubes are
thoroughly protected from corrosion and foreign matter.
WARNING
When reversing the machine from the demolition work equip-
ment, make sure that all operators are standing well clear of
the machine and equipment.
CAUTION
Do not slew the upper structure of the high reach demolition
machine with the additional counterweight installed, with
only demolition boom 1 installed.
a
b
pin retracts
pin extends
16b) SLOWLY!
16a) lower boom