Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-1
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
SECTION 4
SETUP AND INSTALLATION
LUFFING JIB ATTACHMENT
This section contains installation and removal instructions for
the luffing jib attachment.
For the remainder of this section, luffing jib attachment is
referred to as jib or attachment.
The attachment must be installed, operated, and removed by
experienced personnel trained in the operation and erection
of construction cranes. These personnel shall read,
understand, and comply with the instructions in this section,
in the Luffing Jib Rigging Drawing, and in the Liftcrane
Luffing Jib Capacity Charts provided with the attachment.
Contact your Manitowoc dealer for a detailed
explanation of any procedure not fully understood.
The installation/removal area must be firm, level, and free of
ground and overhead obstructions. The area selected must
be large enough to accommodate the crane, selected boom
and jib length, and movement of an assist crane.
ACCESSING PARTS
Some parts of the crane, boom, and jib cannot be reached
from the ground. Take necessary precautions to prevent
falling off the crane, boom, or jib during installation and
removal.
Owner/user shall provide approved ladders or
personnel hoists so workers can safely access those
areas of crane, boom, and jib that cannot be reached
from ground. Adhere to local, state, and federal
regulations for handling personnel.
Optional boom ladders (stored in boom butt) are available
from Manitowoc. If your crane has ladders, see Section 3 in
the Operator Manual provided with the crane.
ASSIST CRANE REQUIREMENTS
Either the Model 999 or an assist crane can be used to install
and remove the jib. If the Model 999 is used, it must be in the
setup configuration (same as when installing counterweights
and crawler or assembling boom) — see Crane Assembly in
Crane Operator Manual for detailed instructions and capacity
limitations.
The jib butt, jib strut, and main strut are shipped from
Manitowoc as an assembled unit. The assembly weighs
approximately 14,000 lb (6 350 kg) and is the heaviest load
to be lifted. Size the assist crane accordingly.
Instructions in this section assume an assist crane will
be used.
CRANE WEIGHTS
See Crane Weights in Section 1 for the weights of the
individual boom and jib components.
OPERATING CONTROLS
Become thoroughly familiar with the location and function of
all operating controls provided for the crane and attachment.
Read and understand the instructions in Section 3.
WARNING
Avoid Death or Serious injury!
Read and understand instructions in this section before
attempting to install or remove attachment.
Moving Parts/Pinch Points!
Avoid death or crushing injury during crane assembly and
disassembly:
• Assembly personnel — take every precaution to
prevent injury when working near moving parts.
• Maintain communication between operator and
assemblers to avoid accidents.
• Keep unauthorized personnel well clear of crane.
Falling Load Hazard!
To prevent lifting equipment from failing and load from
dropping, crane owner/user shall verify the following prior
to each lift:
• All lifting equipment (shackles, hooks, slings, blocks)
has been properly maintained and is safe for use.
• All lifting equipment has a capacity equal to or greater
than load to be lifted.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English