TMS800E OPERATOR’S MANUAL
OPERATING CONTROLS AND PROCEDURES
fully extended position are used to mark the boundaries of the lifting areas.
using the outriggers; refer to Setting the Outriggers, page 326.
A boom extension capacity chart and notes are included to list the capacities for the extension length, load radius, and boom angle.
A working crane may settle during lifting operations. Frequently check the crane for level. When rechecking the crane for level, the boom must be positioned over the front of the crane, fully lowered to horizontal and fully retracted (for cranes fitted with a boom rest, the boom shall be stowed onto the rest). If necessary, relevel the crane using the procedures under Setting the Outriggers, page 3-26.
Another section contains the notes for lifting capacities. Be sure to read and understand all the notes concerning lifting capacities. The load chart also gives weight reductions for load handling devices such as hook blocks, headache balls, boom extensions, etc., which must be taken into consideration as part of the load. Remember, the weight of any other load handling devices such as chains, slings, or spreader bars must be added to the weight of the load.
Proper Leveling of the Crane ASME B30.5 specifies that if a crane is not level within 1% of grade, the allowable capacities must be reduced. Therefore, whether lifting on rubber or outriggers, it is essential that the crane is level to within 1% of grade. The bubble level that is provided on the crane is calibrated to be accurate within 1% of grade. To properly level the crane, the boom must be positioned over the front of the crane, fully lowered to horizontal and fully retracted (for cranes fitted with a boom rest, the boom shall be stowed onto the rest). Raise and level the crane
GROVE
Bubble Level Adjustment The bubble level adjustment should be checked periodically; if it is suspected that the bubble level indicator is out of adjustment, verify and adjust the bubble level as follows: 1.
Position the crane on a firm, level surface.
2.
Extend and set the outriggers. Level the crane, as indicated by the bubble level indicator, using the outriggers.
3.
Place a miracle pointer level, carpenter level, or similar type device on a machined surface such as the turntable bearing or bearing mounting surfaces.
4.
Using the outriggers, level the crane as indicated on the leveling device used in step 3.
5.
Using the bubble level indicator mounting screws, adjust the bubble level indicator to show level.
Published 09-14-2012, Control # 132-07
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