Manitowoc 31000

Reference Only
Manitowoc Published 07-23-15, Control # 078-03 6-7
31000 LUFFING JIB OPERATOR MANUAL MAINTENANCE
6
Luffing Jib-to-Boom Maximum Angle Switch Adjustment
The luffing jib-to-boom maximum angle switch (E) is activated when the following sequence of events occurs:
• The luffing jib is raised to a point where the luffing jib butt (A) contacts the physical luffing jib stop (D).
• As the physical luffing jib stop (D) is compressed, the actuator rod stop (H) contacts and depresses the actuator rod (G)
• When the actuator rod (G) is depressed far enough, the luffing jib-to-boom maximum angle switch (E) is activated.
• After the luffing jib-to-boom maximum angle switch (E) is activated, a Fault 73: Jib Maximum Up Switch icon
should appear on the Main Display screen.
1. The luffing jib-to-boom maximum angle switch should be mounted as shown in Figure 6-6
.
F
A
B
C
D
E
Item Description
A #91 luffing jib butt.
B #90 boom top.
C Boom top universal node #20.
D Physical luffing jib stop.
E Luffing jib-to-boom maximum angle switch.
F 171° 30’ = maximum luffing jib-to-boom angle.
G Actuator rod.
H Actuator rod stop.
FIGURE 6-6
H
G