Section 4 – FLY-JIB INSTALLATION AND STOWAGE Mini-Crawler Crane M A E D A
4-150 1/2019 MC405C-3
FLY-JIB INSTALLATION
AND STOWAGE
WARNING!
• Fly-jib installation and stowage requires two
trained people. Prior to erecting or
dismantling operation, communication of
each person's duties during the operation
and the use of signals during the operation
should be agreed. Where signals are not
adequate, it may cause an accident and
could result in injury or death.
• Fly-jib installation and stowage must be
practiced on level and solid ground.
Otherwise, the Fly-jib may turn due to its
own weight and could cause a serious
hazard.
• Fly-jib installation and stowage require a
rigid stepping stool of sufficient height; an
unstable stool may result in a fall from
height causing an accident.
• Fly-jib installation and stowage must be
undertaken after lowering the main and on
firm level ground. Otherwise, the Fly-Jib
may turn due to its own weight and cause a
serious hazard.
• The fly-jib is fixed on the main boom by four
bolts and two position pins. The fly-jib is a
2-stage jib. Number 1 and 2 sections of the
fly-jib are fixed by one position pin.
Tighten four installation bolts by normal
torque.
Insert three position pins into correct
positions and fix with lynch-pins.
If position pin or installation bolt comes out,
it may cause the fly-jib to drop resulting in a
serious hazard.
• Whenever Fly-jib is installed, always extend
the jib to second stage. The working radius
and lifting height indication of fly-jib mode
moment limiter is calculated based on the
length of second stage Fly-jib.
• Whenever the Fly-jib is installed, it is
essential to re-connect the over winding
detector harness from the Main boom
detector to the Fly-jib detector. Also,
always ensure the correct operation of the
over winding detector of the Fly-jib before
starting work. In the event that the over
winding detector mis-functions, it may
cause the hook or hoisted load to drop
resulting in a serious hazard.
• Fly-jib is stowed the side of main boom
fixed by three different length position pins.
Insert three position pin into correct
position and secure using the lynch-pin.
If the position pin comes out, it may cause
the fly-jib to drop resulting in a serious
hazard.
• When the Fly-jib is stowed, always re-
connect the over winding detector harness
from the Fly-jib detector to the Main boom
detector. Ensure the correct operation of
the over winding detector of the Main boom
before starting work. In the event that the
over winding detector mis-functions, it may
cause the hook or hoisted load to drop
resulting in a serious hazard.
CAUTION: A lever block is used align the bolt
holes of main boom and No.1 Fly-jib and the
installation and removal of the supporting
rod.
For Lever Block usage, please read the
attached operation manual thoroughly.
Fig. 4-426
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