Manitowoc 14000 2 Series

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14000 SERIES 2

Luffing Jib Raising Procedure

Fixed Jib No. 138 on Luffing Jib No. 135 on Boom No. 76

Manitowoc Cranes, Inc.

8799-B, 2011-09-23

Manitowoc, Wisconsin 54220 U.S.A.

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Recommended boom, luffing jib and fixed jib raising and lowering procedure:

14000 SERIES 2 must be equipped with 168,000 lb (76 200 kg) crane counterweight and 53,000 lb (24 040 kg)

carbody counterweight. Refer to fixed jib rigging assembly No. 179361 for makeup of inserts, pendants, strut, jib

stop setup and operation, and miscellaneous parts, etc. Refer to luffing jib rigging assembly No. A18387 for boom

and luffing jib make-up of inserts, pendants, struts, strut raising and lowering procedure, jib stop setup and

operation and miscellaneous parts, etc. Refer to Operator’s Manual for setup and installation.

Three methods may be used to raise and lower boom, luffing jib and fixed jib combinations, depending on

length:

A. Layout Jack-Knife Method With Fixed Jib Attached:

Caution: Anytime luffing jib or fixed jib point rollers are in contact with ground during raising or lowering

procedure, disengage swing lock and release swing brake.

Raising:

Boom, luffing jib and fixed jib are assembled in layout, end-to-end, position. Raise fixed jib strut and attach

pendants and backstays. Attach fixed jib stop to fixed jib butt and temporarily tie off to fixed jib strut. Slowly

raise boom until luffing jib stop strut is just clear of ground. Attach luffing jib stop pendants and unpin luffing jib

stop inner strut from retracted position. Slowly raise boom until luffing jib stop strut is fully extended and pins

engaged (approximately 168 degree boom-to-luffing jib angle). Boom is then raised while luffing jib point and

fixed jib point wheels are allowed to roll on ground. Tension should be applied to luffing jib hoist to keep luffing

jib strut off luffing jib during boom raising. Boom up until boom-to-luffing jib angle reaches value specified in the

tables. Tighten luffing jib suspension with luffing jib hoist. Boom and luffing jib are then raised together using

boom hoist while fixed jib point wheel rolls on ground. Continue raising until fixed jib suspension tightens.

Attach fixed jib stop to luffing jib top. Boom, luffing jib and fixed jib are then raised together using boom hoist

until boom reaches desired boom operating angle. Fixed jib radius must be within capacity chart before

swinging over side of machine when raising over end of blocked crawlers.

Lowering:

Position boom at 85 degrees prior to lowering luffing jib. Lower luffing jib until boom-to-luffing jib angle reaches

value specified in the tables. Lower boom until fixed jib point wheels contact ground. Remove fixed jib stop from

luffing jib top and temporarily tie off to fixed jib strut. Lower boom as fixed jib point wheels roll on ground. Lower

boom until luffing jib point wheels contact ground. Continue to lower boom while luffing jib and fixed jib point

wheels roll along ground. Keep enough tension on luffing jib hoist to keep luffing jib strut off luffing jib. Stop

lowering boom when luffing jib stop pendants start to go into tension (approximately 168 degree boom-to-luffing

jib angle). Disengage luffing jib stop strut pins and lower boom to retract luffing jib stop inner strut. Pin strut in

retracted position.

REFERENCE

ONLY!

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Summary

Layout Jack-Knife Method With Fixed Jib Attached

Raising

Procedure for raising the boom, luffing jib, and fixed jib in a jack-knife configuration.

Lowering

Procedure for lowering the boom, luffing jib, and fixed jib in a jack-knife configuration.

Layout Jack-Knife Method With Fixed Jib Attached Before Luffing Jib Lift-Off

Raising

Steps for raising the boom and jib assembly with fixed jib attached before lift-off.

Lowering

Steps for lowering the boom and jib assembly with fixed jib attached before lift-off.

Fold Under Jack-Knife Method

Raising

Procedure for raising the boom and jib using the fold under jack-knife method.

Lowering

Procedure for lowering the boom and jib using the fold under jack-knife method.

This document outlines the procedure for raising and lowering the luffing jib on a Manitowoc 14000 SERIES 2 crane, specifically with Fixed Jib No. 138 on Luffing Jib No. 135 on Boom No. 76. The procedures detail three methods: Layout Jack-Knife Method with Fixed Jib Attached, Layout Jack-Knife Method with Fixed Jib Attached Before Luffing Jib Lift-Off, and Fold Under Jack-Knife Method.

Function Description

The document describes the operational procedures for configuring the luffing jib and fixed jib on a Manitowoc 14000 SERIES 2 crane. These procedures are critical for safely assembling and disassembling the crane's boom, luffing jib, and fixed jib combinations. The primary function is to guide operators through the steps required to raise these components from a laid-out or folded position to an operational angle, and conversely, to lower them back to a stowed position. The procedures emphasize safety precautions, such as disengaging the swing lock and releasing the swing brake when jib point rollers are in contact with the ground. The goal is to ensure the crane is correctly set up for lifting operations or properly stowed for transport or maintenance.

Important Technical Specifications

The Manitowoc 14000 SERIES 2 crane requires specific counterweight configurations for these operations: 168,000 lb (76 200 kg) crane counterweight and 53,000 lb (24 040 kg) carbody counterweight. The document references several rigging assembly numbers: fixed jib rigging assembly No. 179361 for inserts, pendants, strut, jib stop setup, and miscellaneous parts, and luffing jib rigging assembly No. A18387 for boom and luffing jib make-up of inserts, pendants, struts, strut raising and lowering procedure, jib stop setup, and miscellaneous parts.

Key angles and positions are specified throughout the procedures:

Boom-to-Luffing Jib Angle: Approximately 168 degrees when the luffing jib stop strut is fully extended and pins engaged during raising. Specific tables provide required boom-to-luffing jib angles for various boom and jib lengths, often 90 degrees or 60 degrees.
Boom Position for Lowering: 85 degrees prior to lowering the luffing jib in the Layout Jack-Knife methods.
Luffing Jib Angle for Lowering (Fold Under Method): 10 degrees ahead of vertical.
Luffing Jib Hinge Pin Height (Fold Under Method): 30 Ft. (9.1m) off ground for connecting/disconnecting pendants and backstays.

The tables provide maximum boom and luffing jib lengths that can be lifted unassisted using the Jack-Knife method, both over the end of blocked crawlers and over the side of crawlers. These tables list various boom lengths (e.g., 65.6 ft to 193.6 ft), luffing jib lengths (140.0 ft to 170.0 ft), and fixed jib lengths (30.0 ft to 60.0 ft), along with the corresponding boom-to-luffing jib angle (90 or 60 degrees). A critical note for certain configurations (e.g., 193.6 ft boom length) indicates that the lower boom point may need to be removed and that lowerworks jacking cylinders must be attached when equipped with boom catwalks. Load blocks, hook, and weight ball must remain on the ground until the boom, luffing jib, and fixed jib are erected.

Usage Features

The document provides detailed, step-by-step instructions for crane operators, enabling them to safely configure the crane.

Versatility: Three different methods are provided to accommodate various boom and jib length combinations and operational requirements.
Safety Emphasis: Clear "Caution" notes highlight critical safety steps, such as disengaging the swing lock and releasing the swing brake to prevent uncontrolled movement.
Sequential Operations: The procedures break down complex operations into manageable steps, such as attaching pendants, tightening suspensions, and raising/lowering components in a specific order.
Component Interaction: Instructions detail how different components (e.g., luffing jib stop strut, fixed jib point wheels, luffing jib hoist) interact during the raising and lowering processes. For instance, maintaining tension on the luffing jib hoist to keep the luffing jib strut off the luffing jib during boom raising.
Radius Management: Operators are reminded that the fixed jib radius must be within the capacity chart before swinging over the side of the machine when raising over the end of blocked crawlers.

Maintenance Features

While primarily an operational guide, the document implicitly supports maintenance by ensuring correct assembly and disassembly, which prevents damage to components.

Proper Rigging: References to specific rigging assembly numbers (No. 179361 and No. A18387) ensure that the correct parts and procedures are used for make-up of inserts, pendants, struts, and jib stops, which is fundamental to maintaining the integrity of the jib system.
Component Inspection: Although not explicitly stated as a maintenance step, the detailed instructions for attaching and detaching components (e.g., fixed jib stop, pendants) imply points where operators would naturally inspect these parts for wear or damage.
Strut Management: Procedures for extending and retracting the luffing jib stop inner strut and pinning it in position ensure proper mechanical function and reduce wear.
Operator's Manual Reference: The instruction to "Refer to Operator's Manual for setup and installation" indicates that this document is part of a broader set of instructions that would include more explicit maintenance schedules and checks.