Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-49
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
Raising Boom and Jib
NOTE: Circled numbers in Figure 4-25 and Figure 4-26
correspond to numbered steps in the following
procedure.
1. Raise boom and luffing jib to jack-knife angle called for
in Luffing Jib Raising Procedure.
2. If fixed jib point is already installed, fixed jib rollers will
roll along ground as boom and luffing jib are raised.
3. If fixed jib point is not installed, install after boom and
luffing jib have been positioned at specified angle.
4. Once boom and luffing jib have been raised to specified
angle, slowly haul in luffing hoist wire rope until luffing jib
pendants start to go into tension and stop. Do not
attempt to lift luffing jib at this time or crane will tip.
5. Connect fixed jib backstay pendants (View B):
a. Using an assist crane, raise fixed jib strut and pin
backstay pendants (P4) to links.
b. Lower strut until it is supported by backstay
pendants and disconnect assist crane.
6. Connect jib stop assembly as follows:
a. Remove connecting pins (1, View C) from outer
tube (2).
b. Support outer tube (2) with slings from assist crane
and remove pins (3, View C) connecting outer tube
to jib strut.
c. Remove pins (4, View C).
d. Lower outer tube (2) with assist crane and rotate
links (5, View E) by hand until connecting holes line
up.
e. Install pins (1, View E).
f. Store pins (3) in lugs on outer tube (Figure 4-25
,
View D).
NOTE: Depending on your boom and jib length, step 6g
may not be possible. If this is the case, perform
step 6g
after the fixed jib roller is raised just clear of
the ground.
g. If possible, lower outer tube (2) until hole in link (5,
View F) lines up with hole in luffing jib top and install
pins (4).
h. Remove pins (6, View F) from inner links (7).
i. Slide inner links into outer link (2) until holes in inner
links line up with third hole in links (8). Install pins (6,
View F).
j. Using hand winch on jib top, haul in jib stop control
cable enough to tension jib stop pins so that safety
pins (Figure 4-24
, View B) can be removed.
k. Remove safety pins from jib stop pins (Figure 4-24
,
View B) and store pins in lugs on outer tube
(Figure 4-25
, View D).
l. Pay out control cable until cable is loose. Cable
should be resting on bottom lacings in jib sections.
Pins will not engage if cable is not slack.
NOTE: The jib stop pins will engage automatically when
the jib is raised.
WARNING
Tipping Hazard!
Crane can tip if boom and luffing jib are not at specified
angle when boom is raised with fixed jib attached.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English

Summary

SECTION 2 SAFETY INFORMATION

Safety Messages

Explains the importance of safety messages and the use of alert symbols and signal words.

Crane Access Points

Details safe access points and precautions to prevent slips, falls, and crush hazards.

Safe Operating Practices

Emphasizes safe operation, operator responsibility, and adherence to regulations.

Signals

Safety Devices

Lists and describes standard safety devices like horn, level indicator, boom stops, etc.

Operational Aids

Operating Crane Near Electric Power Lines

Provides critical safety guidelines for working near energized electric power lines.

Electrocution Hazard

Highlights electrocution hazards and safe distances from electrical power lines.

Boom Disassembly Safety

Outlines critical safety precautions for boom disassembly to prevent collapse.

SECTION 3 OPERATION

Standard Hand Signals for Crane Operations

Illustrates and describes standard hand signals used for crane operations compliance with ASME B30.5.

Luffing Jib Operating Controls

Familiarizes operators with the location and function of controls for luffing jib operation.

Digital Display

Automatic Jib Stops

Operating Precautions

Wind Conditions

SECTION 4 SET-UP AND INSTALLATION

Luffing Jib Attachment

Provides instructions for installing and removing the luffing jib attachment.

Assist Crane Requirements

Counterweight Requirement

Blocked Crawlers

Luffing Jib Raising Procedure

Install Jib Butt

Install Jib Inserts

Install Jib Top

Install Load Lines

Provides instructions for installing load lines, including sheave removal and drum selection.

Raise Boom and Luffing Jib

Outlines procedures for raising the boom and luffing jib, including methods and warnings.

Jack-Knife Raising Procedure

Lowering Procedure

Details the procedures for lowering the boom and luffing jib, including in-line and jack-knife methods.

Load Block Reeving

Wire Rope Installation

SECTION 5 LUBRICATION

Lubrication

Provides guidance and references for lubrication procedures and product information.

SECTION 6 MAINTENANCE CHECKLIST

Maintenance and Adjustment

Covers maintenance and adjustment procedures for limit devices on the luffing jib attachment.

Jib Stop Adjustment

Max Up 1 Limit Adjustment

Max Up 2 Limit Adjustment

Max Down Limit Adjustment

Operational Checks

Boom And Luffing Jib Angle Indicator Calibration

Automatic Boom Stop Adjustment

Block-Up Limit Installation and Adjustment

Explains the installation and adjustment of block-up limit controls (anti-two-block devices).