Broderson IC-400-3B, Operation And Maintenance Manual

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18. Replace all of the pins in their lugs for storage and insert their hairpin cotters.
19. Install the sheave block on the load line, if desired.
20. Check the Anti-Two-Block system for proper operation, and set Rated Capacity Limiter
configuration.
SETTING THE OFFSET ANGLE ON THE OFFSETTABLE BOOM EXTENSION:
1. The boom extension must be installed on the main boom tip and the load line, downhaul
weight and wedge socket installed on the boom extension, and secured with all of the
retainer pins.
2. Draw the load line taut with the hoist by pulling the downhaul weight against the bottom
of the tip sheave plates, while operating the Anti-Two-Block over-ride button on the RCL
Display.
W A R N I N G
Be careful not to operate the TELESCOPE EXTEND while overriding the Anti-Two-
Block system. This may break the load line and allow the boom extension and
downhaul weight to fall, causing death or serious injury to personnel.
3. Remove the offset index pin from the boom extension knuckle. To loosen the pin, it
may be necessary to rock the boom extension tip up and down manually while
maintaining the proper tension in the load line.
4. Lower or raise the load line with the hoist until the 0, 15, or 30 degree offset holes align
in the knuckle.
5. Insert the index pin in the knuckle and retain it with the hairpin cotter.
6. Set Rated Capacity Limiter configuration.
STOWING THE BOOM EXTENSION
:
1. If the boom extension is offset to 15 or 30 degrees, return it to the zero offset position,
as described above.
2. Perform steps 16-20 of the boom extension installation and stowing procedure.
3. Set Rated Capacity Limiter configuration.