Grove Crane RT 770E Load Charts Manual SN 234537 – PDF DOWNLOAD

Description

Grove Crane RT 770E Load Charts Manual SN 234537 – PDF DOWNLOAD

FILE DETAILS:

Grove Crane RT 770E Load Charts Manual SN 234537 – PDF DOWNLOAD

Language : English
Pages : 22
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Grove Crane RT 770E Load Charts Manual SN 234537 – PDF DOWNLOAD

GENERAL:
1. Rated loads as shown on lift chart pertain to this machine as originally manufactured and
equipped. Modifications to the machine or use of optional equipment 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 information in the Operator’s
and Safety Handbook, Service Manual, and Parts Manual supplied with this machine. If
these manuals are missing, order replacements from the manufacturer through the distributor.
3. The operator and other personnel associated with machine shall fully acquaint themselves with
the latest American National Safety Standards (ASME/ANSI) for cranes.
SETUP:
1. The machine shall be level and on a firm supporting surface. Depending on the nature of the
supporting surface, it may be necessary to have structural supports under the outrigger floats or
tires to spread the load to a larger bearing surface.
2. For outrigger operation, all outriggers shall be properly extended with tires raised free of
crane weight before operating the boom or lifting loads.
3. When machine is equipped with center front stabilizer, the front stabilizer shall be set in
accordance with instructions in Operator’s & Safety Handbook.
4. When equipped with removable and/or extendible counterweight, the proper counterweight shall be
installed and fully extended before and during operation.
5. Tires shall be inflated to the recommended pressure before lifting on rubber.
6. With certain boom and hoist tackle combinations, maximum capacities may not be obtainable with
standard cable lengths.
7. Unless approved by the crane manufacturer, do not travel with boom extension or
jib erected. Refer to Operator’s and Safety Handbook for job-site travel information.
OPERATION:
1. Rated loads at rated radius shall not be exceeded. Do not attempt to tip the machine
to determine allowable loads. For clamshell, grapple, magnet or concrete bucket operation, weight
of component and load must not exceed 80% of rated lifting capacities.
2. All rated loads have been tested to and meet the requirements of SAE J1063 – Cantilevered Boom
Crane Structures – Method of Test, and do not exceed 85% of the tipping load on outriggers fully
extended. Capacities on outriggers 50% extended and 0% extended (fully retracted) correspond
to SAE J1289 (Test Load = 1.25P + 0.1A). 0.1A represents one-tenth (0.10) of the
total boom weight reduced to the boom point. Loads are also determined by SAE J765 Crane
Stability Test Code.
3. Rated loads include the weight of hookblock, slings and auxiliary lifting devices and their
weights shall be subtracted from the listed rating to obtain the net load to be lifted. When more
than the minimum required parts of line needed to pick the load are used, the additional rope
weight as measured from the lower sheaves of the the main boom nose shall be considered part of the
load to be lifted. When both the hook block and headache ball are reeved, the lifting device that
is NOT in use, including the line as measured from the lower sheave(s) of the nose supporting the
unused device shall be considered part of the load.
4. Load ratings are based on freely suspended loads. No attempt shall be made to
move a load horizontally on the ground in any direction.
5. The maximum in-service wind speed is 20 m.p.h. It is recommended when wind
velocity is above 20 m.p.h., rated loads and boom lengths shall be appropriately reduced.
For machines not in-service, the main boom should be retracted and lowered with swing brake set in
wind velocities over 30 m.p.h.
6. Rated loads are for lift crane service only.
7. Do not operate at a radius or boom length where capacities are not listed. At these positions,
the machine may overturn without any load on the hook.
8. The maximum load which can be telescoped is not definable because of variations in loadings and
crane maintenance, but it is safe to attempt retraction and extension of the boom within the limits
of the capacity chart.
9. When the boom length or lift radius or both are between values listed, the smallest load shown
at either the next larger radius or next longer or shorter boom length shall be used.
10. For safe operation, the user shall make due allowances for his particular job conditions, such
as: soft or uneven ground, out of level conditions, high winds, side loads, pendulum action,
jerking or sudden stopping of loads, experience of personnel, two machine (tandem)
lifts, traveling with loads, electric wires, obstacles, hazardous conditions, etc. Side
pull on boom or jib is extremely
dangerous.

TABLE OF CONTENTS:

Grove Crane RT 770E Load Charts Manual SN 234537 – PDF DOWNLOAD

GENERAL NOTES 4
WEIGHT REDUCTIONS / LINE PULLS & REEVING INFO 5
LIFTING AREA DIAGRAMS 6
RANGE DIAGRAM WITH 33-56′ FOLDING EXTENSION 7
RANGE DIAGRAM WITH 33-56′ EXTENSION + 20′ INSERT 8
ON OUTRIGGERS FULLY EXTENDED
MAIN BOOM 9
FOLDING EXTENSION WITH 125 1′ MAIN BOOM – MODE B 10
FOLDING EXTENSION WITH 125 3′ MAIN BOOM – MODE A 11
FOLDING EXTENSION WITH 137 8′ MAIN BOOM – MODE A & B 12
FOLDING EXTENSION + 20′ INSERT 13
ON OUTRIGGERS 50% EXTENDED
MAIN BOOM 15
FOLDING EXTENSION WITH 125 1′ MAIN BOOM – MODE B 16
FOLDING EXTENSION WITH 125 3′ MAIN BOOM – MODE A 17
FOLDING EXTENSION WITH 137 8′ MAIN BOOM – MODE A & B 18
FOLDING EXTENSION + 20′ INSERT N/A
ON OUTRIGGERS 0% EXTENDED
MAIN BOOM 19
ON RUBBER 20-21
TIRE INFLATION 22

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