2-22
SETTING THE OFFSET ANGLE ON THE OFFSETTABLE BOOM EXTENSION:
1. The boom extension must be installed on the main boom tip & the load line, downhaul
weight & 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 holding the Anti-Two-Block override switch under the control
panel.
WARNING
Be careful not to operate the TELESCOPE lever 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.
STOWING THE OFFSETTABLE 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. Reverse the procedure described in steps 7 through 14 in the Boom Extension installation
procedure on previous page.
FRONT AUXILIARY WINCH:
The front auxiliary winch is mounted behind the front bumper and is controlled from the
operator compartment. The winch, with the 5/16-inch (7.9 mm) wire rope (10,500-lb (47 kn)
breaking strength), and 2-ton (1810 kg) hook, has a single-part-line capacity of 3000 pounds
(1360 kg). A pulling eye is provided below the winch for 2-parting the line with a sheave block,
allowing 6000-lb (2720 kg) pulls. (An additional sheave block is not provided with this option.).
The front auxiliary winch is designed for the following uses:
1. As a tag line for restraining loads on the boom load line during Pick and Carry operation.
2. To drag loads on the ground to a position where they may be safely lifted with the boom.
3. To pull the crane out of mud or other obstacles.
4. To pull a smaller vehicle that is stuck.
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