Maeda CC1908S-1 - Page 248

6.16 INSPECTION M A E D A Crawler Crane
6-40 5/2020 CC1908S-1
4. Operate the fly jib as follows, and check that
the monitor display is correct.
Fly jib posture and display item
Monitor
display
"Number of fly jib boom sections"
display when fly jib is stowed
R
"Number of fly jib boom sections"
display when fly jib is fully retracted
1
"Number of fly jib boom sections"
display when fly jib is fully extended
2
"Fly jib angle" display when fly jib is
fully raised
0
"Fly jib angle" display when fly jib is
fully lowered
60
5. Start the engine and operate the crane as
follows. Check that the moment limiter
functions correctly.
[Crane operation]
• The boom is lowered to the auto stop
position under the following conditions:
• A boom length between 6.1 m and
12.4 m
• Fly jib angle of 0 degrees
• Boom angle of 20 degrees or more
[Moment limiter operation]
• Stops at a boom angle of 10 degrees.
• After stopping, the working status lamp
illuminates in red.
• Boom lowering, boom extension, hook
hoisting, fly jib lowering, and fly jib
extension operations are stopped.
[When searcher hook is mounted]
1. Start the engine.
Check the working status lamps. After
the rotating lights of all colors are lit, the
green rotating lights will come on.
Make sure that the monitor display is in
searcher hook mode.
Make sure that the actual position of the
searcher hook and the position display
on the monitor are matched.