MACHINE RIGGING
GENERAL
4. Do not use chains, hooks or wire when lifting any boom
or jib insert. When lifting any inserts, or assembled sec-
Since both safe and efficient operation are required of the
tions, wrap slings around the chord members, not the lac-
operator, this section and the section on controls and oper-
ing members. Do not wrap the slings at a point where two
ation and Catalog 240 should be studied before attempting
lacing members come together or lacing damage may re-
to operate this machine.
sult. When lifting any assembled sections, lift at a pin con-
nection point.
This section is divided into three basic parts. The first part
covers the basic rigging procedures and assumes that the
BASIC RIGGING
machine has had all counterweight and all boom removed.
The procedures in the first part are written, whenever pos-
CRANE BOOM
sible, for installation without the use of an assisting crane.
GENERAL. Before any of the rigging, in this first part, can
Because of the size of the machine and the attachments,
begin it will be necessary to attach the boom base to the ma-
certain items may require the use of an assisting crane. If
chine. Because of the close operating radius required to at-
an assisting crane is available the procedures given are
tach counterweight to the machine it is recommended that
simplified, in that the assisting crane can install counter-
only the basic boom be used.
weight and boom. Even if an assisting crane is available, it
is advisable that this entire section be read The second part
BASIC BOOM INSTALLATION. Install the basic boom on the
covers liftcrane attachment. The third part covers the
machine as follows:
procedure for dismantling the crane for movement to
another job site.
1. Crib the boom base up to the level of the boom foot lug on
the revolving frame. Carefully move the machine up to the
Before actually rigging the machine, certain preparations
cribbed boom base and align the boom foot with the boom
should be made They include the following:
foot lugs. Install the boom base pins. When installing the
boom base pins, insert washers to fill the space between
the boom foot lugs and boom base. Secure the boom base
pins with the cotter pins.
If the machine is equipped with a fairlead,
swing it out of the way to fully lower the boom.
2. Install the upper spreader on the tugs at the top of the
See FAIRLEAD and LAGGING Manual.
boom base section.
3. Reeve the boom hoist line. Refer to the topic Reeving.
1. Perform the "A" maintenance checks as specified in the
4. Raise the gantry to the extend position. See the topic
preventive maintenance section of this manual.
Gantry.
2. Be sure that all rating chart requirements are met. Con-
5. Carefully raise the boom base section, by taking up on
sult the rating chart for Instructions concerning: additional
the boom hoist line, and move the machine up to the crib-
counterweight for longer boom lengths, gantry positions,
bed tip section. Lower the boom base and position the boom
the use of lntermediate suspension, insert arrangements,
base to the end of the tip section so that the top pin connec-
etc.
tors are aligned. Install the connector pins and lock them in
position with the cotter pins (see Figure 4-1. View A).
3. Clear the area selected for rigging of all unnecessary
6. Carefully lift the boom base section by taking up on the
material. Unauthorized personnel not required to assist in
boom hoist line until the lower pin connectors are aligned
the rigging of the machine should not be allowed in the
Install the lower connector pins and lock them in position
area. It is strongly recommended that the entire area be
with the cotter pins (see Figure 4-1, View B).
roped off or barricaded. There must be adequate room to al-
7. Lower the boom to the ground and attach suitable guy
low free passage of vehicles delivering parts and for un-
lines to the tip section and to the upper spreader.
loading and storing the parts until they are required.
