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General Notes

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RT780

GENERAL

  • 1.

    Rated loads as shown on Lift Charts pertain to this machine as originally manufac- tured and equipped. Modifications to the machine or use of optional equipment or other than that specified can result in a reduction of capacity.

  • 2.

    Construction equipment can be hazardous if improperly operated or maintained. Operation and maintenance of this machine shall be in compliance with the infor- mation in the Operator’s, Parts and Safety Manuals supplied with this machine. If These manuals are missing, order replacements from the manufacturer through your distributor.

  • 3.

    These warnings to not constitute all of the operating conditions for the crane. The operator and job site supervision must read the OPERATORS MANUAL, CIMA SAFE- TY MANUAL, APPLICABLE OSHA REGULATIONS, AND SOCIETY OF MECHANICAL ENGINEERS (ASME) SAFETY STANDINGS FOR CRANES.

  • 4.

    This crane and its load ratings are in accordance with POWER CRANE & SHOVEL ASSOCIATION, STANDARD NO.4 SAE CRANE LOAD STABILITY TEST CODE J765A, SAE METHOD OF TEST FOR CRANE STRUCTURE J1063 AND APPLICABLE SAFETY CODE FOR CRANES, DERRICKS AND HOISTS, ASME/ANSI B30.5

DEFINITIONS

  • 1.

    LOAD RADIUS - The horizontal distance from the axis of rotation before loading to the center of the vertical hoist line or tackle with a load applied.

  • 2.

    LOADED BOOM ANGLE - It is the angle between the boom base section and the hor- izontal, after lifting the rated load at the rated radius. the boom angle before loading should be greater to account for deflections. The loaded boom angle combined with boom length give only an approximation of the operating radius.

  • 3.

    WORKING AREA - Areas measured in a circular arc about the centerline of rotation as shown in the diagram.

  • 4.

    FREELY SUSPENDED LOAD - Load hanging free with no direct external force applied except by the hoist rope.

  • 5.

    SIDE LOAD - Horizontal force applied to he lifted load either on the ground or in the air.

  • 6.

    NO LOAD STABILITY LIMIT - The stability limit radius shown on the range diagrams is the radius beyond which it is not permitted to position the boom, when the boom angle is less than the minimum shown on the applicable load chart, because the machine can overturn without any load.

  • 7.

    BOOM SIDE OF CRANE - The side of the crane over which the boom is positions when in OVER SIDE working position.

SET-UP

  • 1.

    Crane load ratings are based on the crane being leveled and standing on a firm, uniform supporting surface.

  • 2.

    Crane load ratings on outriggers are based on all outrigger beams being fully extended or in the case of partial extension ratings mechanically pinned in the appropriate position, and the tires free of the supporting surface.

  • 3.

    Crane load ratings on tires depend on appropriate inflation pressure and the tire conditions. Caution must be exercised when increasing air pressures in tires. Consult Operator’s Manual for precautions.

  • 4.

    Use of jibs, lattice-type boom extensions, or fourth section pullouts extended is not permitted for pick and carry operations.

  • 5.

    Consult appropriate section of the Operator’s and Service Manual for more exact description of hoist line reeving.

  • 6.

    The use of more parts of line than required by the load may result in having insuffi- cient rope to allow the hook block to reach the ground.

  • 7.

    Properly maintained wire rope is essential for save crane operation. Consult Operator’s Manual for proper maintenance and inspection requirements.

  • 8.

    When spin-resistant wire rope is used, the allowable rope loading shall be the breaking strength divided by five (5), unless otherwise specified by the wire rope manufacturer.

  • 9.

    Do not elevate the boom above 60° unless the boom is positioned in-line with the crane’s chassis or the outrigger are extended. Failure to observe this warning may result in loss of stability.

OPERATION

  • 1.

    CRANE LOAD RATINGS MUST NOT BE EXCEEDED. DO NOT ATTEMPT TO TIP THE CRANE TO DETERMINE ALLOWABLE LOADS.

  • 2.

    When either radius or boom length, or both, are between listed values, the smaller of the two listed load ratings shall be used.

  • 3.

    Do not operate at longer radii than those listed on the applicable load rating chart (cross hatched areas shown on range diagrams.)

  • 4.

    The boom angles shown on the Capacity Chart give an approximation of the operat- ing radius for a specified boom length.The boom angle, before loading, should be greater to account for boom deflection. It may be necessary to retract the boom if maximum boom angle is insufficient to maintain rated radius.

  • 5.

    Power telescoping boom sections must be extended equally.

  • 6.

    Rated loads include the weight of hook block, slings, and auxiliary lifting devices. Their weights shall be subtracted from the listed rated load to obtain the net load that can be lifted. When lifting over the jib the weight of any hook block, slings, and auxiliary lifting devices at the boom head must be added to the load. When jibs are erected but unused add two (2) times the weight of any hook block, slings, and auxiliary lifting devices at the jib head to the load.

  • 7.

    Rated loads do not exceed 85% on outriggers or 75% on tires, of the tipping load as determined by SAE Crane Stability Test Code J765a. Structural strength ratings in chart are indicated with an asterisk (*).

  • 8.

    Rated loads are based on freely suspended loads. No attempt shall be made to drag a load horizontally on the ground in any direction.

  • 9.

    The user shall operate at reduced ratings to allow for adverse job conditions, such as: soft or uneven ground, out of level conditions, high winds, side loads, pendulum action, jerking or sudden stopping of loads, hazardous conditions, experience of personnel, two machine lifts, traveling with loads, electric wires, etc. (side pull on boom or jib is hazardous). Derating of the cranes lifting capacity is required when wind speed exceeds 20 MPH. The center of the lifted load must never be allowed to move more then 3* off the center line of the base boom section due to the effects of wind, inertia, or any combination of the two. *"Use 2' off the center line of the base boom for a two section boom, 3' for a there section boom, or 4’ for a four section boom.”

  • 10.

    The maximum load which can be telescoped is not definable, because of variations in loadings and crane maintenance, but it is permissible to attempt retraction and extension if load ratings are not exceeded.

  • 11.

    Load ratings are dependent upon the crane being maintained according to manu- facturer's specifications.

  • 12.

    It is recommended that load handling devices, including hooks, and hook blocks, be kept away from boom head at all times.

  • 13.

    FOR TRUCK CRANES ONLY: 360° capacities apply only to machines equipped with a front outrigger jack and all five(5) outrigger jacks properly set. If the front (5th) out- rigger jack is not properly set, the work area is restricted to the over side and over rear ares as shown on the Crane Working Positions diagram. Use the 360° load rat- ings in the overside work areas.

  • 14.

    Do not lift with outrigger beams positioned between the fully extended and interme- diate (pinned) positions.

  • 15.

    Truck Cranes not equipped with equalizing (bogie) beams between the rear axles may not be used for lifting “on tires”. Truck Cranes equipped with equalizing beams and rear air suspension should “dump” the air before lifting “on tires”.

CLAMSHELL, MAGNET, AND CONCRETE BUCKET SERVICE

  • 1.

    Maximum boom length for clamshell and magnet service is 50'.

  • 2.

    Weight of clamshell or magnet, plus contents are not to exceed 6,000 lb or 90% of rated lifting capacities, whichever is less. For concrete bucket operation, weight of bucket and load must not exceed 90% of rated lifting capacity.

TEREX Cranes 106-12th Street S.E. Waverly, Iowa 50677-9466 USA

TEL (319) 352-3920

FAX (319) 352-5727

EMAIL inquire@terexwaverly.com WEB terex-cranes.com

Disclaimer: Effective Date: March, 2008. Product specifications and prices are subject to change without notice or obligation. The photographs and/or drawings in this document are for illus- trative purposes only. Refer to the appropriate Operator’s Manual for instructions on the proper use of this equipment. Failure to follow the appropriate Operator’s Manual when using our equip- ment or to otherwise act irresponsibly may result in serious injury or death. The only warranty applicable to our equipment is the standard written warranty applicable to the particular product and sale and Terex makes no other warranty, express or implied. Products and services listed may be trademarks, service marks or trade-names of Terex Corporation and/or its subsidiaries in the USA and other countries.

All rights are reserved. Terex® is a registered trademark of Terex Corporation in the USA and many other countries. Copyright 2008 Terex Corporation.

PRINTED IN U.S

May 21, 2008 P/N: RT780RDCC52008

Range Diagram and Lifting Capacity

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RT780

80 TON LIFTING CAPACITY

RANGE DIAGRAM 40' - 126'

BOOM

Dimensions are for largest factory furnished hook block and hook & ball, with anti-two block activated

COUNTER WEIGHT

W/AUX. WINCH 13,660 LB W/O AUX. WINCH 15,200 LB

BOOM LENGTH

40'-126'

OUTRIGGER SPREAD

24'

STABILITY PERCENTAGE

ON OUTRIGGERS 85% ON TIRES 75%

PCSA CLASS

10-316

CRANE WORKING CONDITIONS

REDUCTION IN MAIN BOOM CAPACITY

All jib in stowed position Aux. boom in head sheave

  • 0

    lb

100lb

HOOK BLOCK WEIGHTS

Hook and ball

419 lb

Hook block (5 sheave)

1608 lb

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