Manitowoc Published 05-15-17, Control # 043-09 4-21
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
In-Line Raising Procedure
See Figure 4-11 for the following procedure. Circled
numbers in Figure 4-11
correspond to numbered steps in the
following procedure.
NOTE: It is normal for the BLOCK UP fault to come on
during the raising procedure. The fault will go off
once the boom and luffing jib are raised and the
load lines/block-up limit chains are hanging freely.
1. Perform Preliminary Raising Procedure.
2. Install load block and/or weight ball at desired points if
not already done (see Load Block Reeving in this
section).
3. Slowly luff up until backstay pendants and jib straps start
to go into tension and stop. It will be necessary to use
limit bypass switch if MAX UP 1 limit is on.
4. Slowly raise boom and jib (boom up) to desired boom
angle. See Capacity Chart for allowable boom angles.
5. Pay out load lines as boom and jib are raised.
6. Luff down to position jib at required operating radius for
load to be handled. It will be necessary to use limit
bypass switch if BLOCK UP limit is on.
7. Travel forward as required to position load blocks or
weight balls below boom or jib points and raise load
blocks or weight balls to desired position.
WARNING
Tipping Crane Hazard!
For in-line procedure, do not raise boom and jib
combinations longer than specified on Raising Procedure
Chart. Crane will tip.
WARNING
Falling Load Hazard!
Do not lift load blocks or weight balls off ground until boom
has been raised to desired operating angle and jib has
been positioned at required operating radius for load to be
handled. Structural damage can occur and attachment
can collapse if this precaution is not observed.
CAUTION
Jib Stop Damage!
Do not raise jib off ground with luffing hoist during step 3.
Jib stop straps will be over tensioned, possibly resulting in
damage.
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