Harrington Hoists and Cranes RH - Advantage Wire Rope Hoist - Manual (Page 20)

20
3.6 Reeving and Adjustments
3.6.1 Reeving the bottom hook
1) Working from a scaffold or lifting platform, remove the Retaining Ring (B) and Load Limiter Pin (D)
from the Terminal Head Crossbar (A). Let the Load Limiter (C) rotate downward and remove the
Terminal Head (F) from the Lever Support/Load Limiter Assembly (C) by pulling out the Terminal
Head Pin (E). (see
Figure 3-17 ). Note: the Load limiter is standard on the 7½T, optional on the 5T
and 10T trolley hoists.
2) From the ground, press the down button on the pendant until there is sufficient rope unwound to
reeve the hoist. Take care not to activate the down limit switch.
3) Place the Bottom Block on the ground so that it is positioned perpendicular to the hoist, and insert
the rope end into the bottom block as shown in Figure 3-18 for 4/1 reeved hoists (4 rope-falls). To
make rope insertion easier, temporarily attach a wire to the end of the rope with adhesive tape and
use the wire to pull the rope through the Bottom Block. Securely tie a string or cord to the end of
the rope and pull the wire rope up to the hoist from the scaffolding/platform. Thread the rope
through the return pulley installed in the hoist, then back through the Bottom Block (see
Figure 3-
18 ).
4) Insert the end of the rope into the Terminal Head (F) and making sure at least 4 inches of rope
extend beyond the Terminal Head (F). Install the Wedge (G) into the Terminal Head (F) and pull
the rope until the Wedge (G) and the rope are tightly seated in the Terminal Head (F) (
Figure 3-19 ).
5)
WARNING
Make certain the wire rope is tight against the Wedge (G) in the Terminal
Head (F).
6) Attach the Rope Clamp (H) 2 inches from the Terminal Head (F) and fully tighten the nuts. Do
NOT clamp the free end of the rope to the load bearing rope fall (the rope between the Terminal
Head (F) and the Bottom Block) (
Figure 3-20 ).
7) Reattach the Terminal Head (F) to the Load Limiter (C) with the Terminal Head Pin (E) and
reattach the Load Limiter (C) to the Terminal Head Crossbar (A) using the Load Limiter Pin (D) and
Retaining ring (B) (
Figure 3-21 ). Note: the Load limiter is standard on the 7½T, optional on the 5T
and 10T trolley hoists.
Figure 3-17 Remove Terminal
Head Figure 3-18 Reeve the Bottom Block