NOTE: SHEAVES IN BOOM HEAD AND HOOK BLOCK ARE NUMBERED FROM
LEFT TO RIGHT AS VIEWED FROM THE OPERATOR’S STATION. “D” INDICATES
PINNED END OF ROPE.
PARTS OF LINE BOOM HEAD (LOAD
SHEAVE)
HOOK BLOCK (BLOCK
SHEAVE)
1 1 D
2 1 D 3
3 1 5 3 D
4 1 4 D 14
5 1 2 3 2 4 D
6 1 2 4 D 2 3 4
7 1 2 3 4 2 3 4 D
8 1 2 3 4 D 1 2 3 4
9 1 2 3 4 5 1 2 3 4 D
10 1 2 3 4 5 D 1 2 3 4 5
These patterns represent some, though not all, of the options for reeving patterns for
hookblocks. Always use a reeving pattern that allows the block to hang level.
When reeving the crane in preparation for any job, it should be kept in mind that hoisting
and lowering speeds decrease as the number of parts of line increases. For the most
efficient use of the crane, it is therefore desirable to use the minimum required number of
parts for lifting the load as determined by referring to the load rating chart.
This crane incorporates a “Quick Reeving” boom head and block which do not require
removal of the wedge and socket from the rope in order to change the reeving. Removal of
two pins in the boom head and three in the hook block will allow the wedge and socket to
pass through.
Never use less than the number of parts called for by the load rating chart.
If it is not practical to alter the reeving during the course of the work, the required number
of rope parts must be determined on the basis of the heaviest load to be lifted during
operations.
When the required number of rope parts has been determined, reeve the rope as shown on
the previous page. Attach a wedge type rope socket (refer to Wire Rope User's Manual) to
the wire rope dead end and secure it to either the boom peak or hook block as required.
Dead end the rope on the hook block for an odd number of line parts, and on the boom
peak for an even number of parts.
Attach the anti two-block weight to the anti two-block switch and to the first part of line as
shown on the previous page. The anti two-block chain should be 48 inches long. Verify that
the chain is not twisted or knotted after installation.
T300-1_T500-1_T780
Assembly
74 P/N 12261-683
REVISED: January 2015
To Next Page
Loading...
