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2.23 CRANE STOWING OPERATION
The hook stowing switch cancels the auto stop function of the over hoist detector.
Operate the winch lever carefully not to let the hook block hit the boom when stowing the hook
block.
CAUTION
• Stop the swing of the hook block before stowing the hook block.
• When stowing the hook block, do not topple the entire hook block sideways on the ground by
loosening the wire rope too much. This will cause the irregular winding on the winch drum.
• The boom “retracting” operation will lower the hook block. The hook block also lowers with
the boom “lowering” operation. Raise the hook at the same time so that the hook block will not
touch the ground or interefere with the machine.
• Stow the boom securely into the stowing position. After stowing the boom, verify that the
boom stowing lamp on the outrigger display lights up in green. If the boom stowing lamp does
not light up, the outriggers cannot be stowed. If the boom stowing lamp does not light up,
lower the boom to the maximum or slew the boom to verify that the boom stowing lamp lights
up.
1. Operate the boom telescoping lever (2) to the “RETRACT” (pull
toward you) side to fully retract the boom.
2. Operate the slewing lever (1) to the “LEFT” or “RIGHT” side so
that the boom slews to the center of the machine.
3. Operate the boom derricking lever (4) to the “LOWER” (push
forward) side and lower the boom until it automatically stops.
4. With the boom stowing switch knocked to the “ON” position,
operate the boom derricking lever (4) again to the “LOWER”
(push forward) side to stow the boom.
NOTES
When the boom stowing switch is at the “ON” position, the pilot
lamp at the switch section lights up.
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