MAINTENANCE 31000 LUFFING JIB OPERATOR MANUAL
6-4 Published 07-23-15, Control # 078-03
Luffing Jib-to-Boom Minimum Angle Switch Adjustment
The luffing jib-to-boom minimum angle switch (A) is activated when the following sequence of events occurs:
• The luffing jib is lowered to a point where the luffing jib butt (B) contacts and depresses the actuator rod (H).
• When the actuator rod (H) is depressed far enough, the luffing jib-to-boom minimum angle switch (A) is activated.
• After the luffing jib-to-boom minimum angle switch (A) is activated, a Fault 67: Jib Maximum Down Switch icon
should appear on the Main Display screen.
B
A
B
C
D
F
G
E
FIGURE 6-2
Item Description
A Luffing jib-to-boom minimum angle switch.
B #91 luffing jib butt.
C #90 boom top.
D Boom top universal node #20.
E 67° 0’ = minimum luffing jib-to-boom angle.
F Physical luffing jib stop.
G Luffing jib-to-boom maximum angle switch.
H Actuator rod.
H
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