SAFETY INFORMATION TMS9000-2 OPERATOR MANUAL
2-22 Published 02-21-2019, Control # 611-05
• 1926.753(e)(3)(ii) The rigging capacity specified in the
rigging rating chart.
1926.753(e)(4) The multiple lift rigging assembly shall be
rigged with members:
• 1926.753(e)(4)(i) Attached at their center of gravity and
maintained reasonably level;
• 1926.753(e)(4)(ii) Rigged from top down; and
• 1926.753(e)(4)(iii) Rigged at least 7 feet (2.1 m) apart.
1926.753(e)(5) The members on the multiple lift rigging
assembly shall be set from the bottom up.
• 1926.753(e)(6) Controlled load lowering shall be used
whenever the load is over the connectors.
Tilt-Up Panel Lifting
Requirements and recommendations regarding operation
and use of Grove Cranes are stated on decals and in the
Operator Manual provided with each specific model
machine. Using the subject crane to perform tilt-up panel
lifting with two hoist lines poses new and different hazards
than does normal lifting use.
Therefore, the following additional precautions must be
taken if it is necessary for the crane to be used to perform tilt-
up panel lifting using a crane equipped with two hoists:
• The crane must be set up and operated in accordance
with Grove’s instructions in the Operator Manual, Load
Capacity Chart, and decals affixed to the crane.
• The hoist rope from the main hoist shall be reeved over
the main boom nose reeved for two parts of line.
• The hoist rope from the auxiliary hoist shall be reeved
over the auxiliary boom nose reeved for one part of line.
• The load shall be connected with the main hoist line
connected to the end closest to crane and the auxiliary
hoist line connected to the end farthest from the crane.
• The anti-two block system shall be installed and
inspected to confirm that it is active to monitor both hoist
lines.
• The RCL hoist selection shall be set to main hoist and
two parts of line.
• The wire rope and sheaves shall be inspected prior to
and following the lifting operations for chaffing or
scrubbing.
• The total gross load shall not exceed 80% of the
standard load chart. The operator shall be responsible to
control this as the RCL does not have a feature to set
reduced lifting limits.
• The auxiliary hoist line shall be considered part of the
deducts to determine net allowable load.
• The panel shall be lifted so that the hoist lines are in line
with the crane.
• The load shall be controlled to prevent rotation of the
load and to ensure the load stays in line with the boom.
• The load must be balanced with the auxiliary: load line
not taking more than half the load at any time during the
lift. The RCL will not be providing coverage for the line
pull of the auxiliary hoist line.
• The effect of wind loads on the crane and panel shall be
taken into consideration. Operations shall be halted if
the wind can cause a loss of control in handling the load.
• The main hoist line shall be used to raise the panel into
the vertical position.
Ensure that all personnel working on and around the crane
are properly trained and thoroughly familiar with operational
functions of the crane and safe operating and work practices.
Personnel should be thoroughly familiar with regulations and
standards governing cranes and their operation. Work
practices may vary slightly between government regulations,
industry standards, local and job-site rules and employer
policies so a thorough knowledge of and compliance with all
relevant work rules is necessary.
Counterweight
On cranes equipped with removable counterweights, ensure
the appropriate counterweight sections are properly installed
for the lift being considered.
Do not add material to the counterweight to increase
capacity. United States Federal law prohibits modification or
additions which affect the capacity or safe operation of the
equipment without the manufacturer’s written approval.
[29CFR 1926.1434]
Outrigger Lift Off
Regarding “lifting” of an outrigger pad during craning
activities, be advised that the rated loads for these cranes,
as indicated on the crane’s Load Chart, do not exceed 85%
of the tipping load on outriggers as determined by SAE J765
“Cranes Stability Test Code.” An outrigger pad may lift off the
ground during operation of the crane within the capacity
limits of the Load Chart, yet the crane will not have reached
instability. The “balance point” for stability testing according
to SAE and Grove criteria is a condition of loading wherein
the load moment acting to overturn the crane is equal to the
maximum moment of the crane available to resist
overturning. This balance point or point of instability for a
crane does not depend on “lifting” of an outrigger but rather
on comparison of the “opposing” load moments.
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