6. Jib side-up function
1. Automatic stop by two-blocking must not occur
while the jib set status is registered.
2. While the jib is mounted, check that the jib
stowing (by retracting the cylinder) is not available
when the jib connection pin is not inserted.
3. Check the jib lock icon (indicating that the jib lock
pin is inserted).
• When the jib is secured on the bottom face of
the boom, the icon shown below appears.
• After jib side-up stowing operation is completed,
check that the symbol goes out.
4. Check that the jib raising (by extending the jib tilt
cylinder) is not available when the jib lock pin is
inserted.
5. Check that the jib raising (by extending the jib tilt
cylinder) is not available when the jib lock pin is
engaged.
6. Check the jib drop prevention function.
Register the jib set status and perform the
following check.
• While the jib lock pin is inserted and jib
connection is not inserted (assuming the
condition that the jib is swung from the bottom
face of the boom to the front of the boom
during jib mounting), check that you cannot
extend the boom when the boom angle is less
than 73°.
• While the jib lock pin and jib connection pin are
inserted (assuming the condition that the jib is
secured on the bottom face of the boom and
going to be stowed by side-up), check that
you cannot extend the boom when the boom
angle exceeds 5°.
7. Checking indication of jib full retraction
• While the jib lock pin is not inserted (assuming
the condition that the jib is suspended vertical
toward the ground and going to be secured on
the bottom face of the boom during jib
stowing), the icon appears when the jib tilt
cylinder is fully retracted.
• Check that the icon goes out when the jib tilt
cylinder extends by 30 mm (1.2 in).
• After the check, always retract the jib tilt
cylinder fully and stow the jib.
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