Harrington-hoists-and-cranes RH Wire Rope Hoist User Manual download pdf (Page 36)

3.6 Reeving and Adjustments

3.6.1 Reeving the bottom hook

1) Working from a scaffolding 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 Load Limiter (C) by pulling out the Terminal Head Pin (E). (see

Figure 3-31).

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 3-32 for 2/1 and 4/1 reeved hoists (2 or 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. For

4/1 reeved hoists thread the rope through the return pulley installed in the hoist, then back through

the Bottom Block (see Figure 3-32).

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 3-33).



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 3-34).

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 3-35).

Figure 3-31 Remove Terminal

Head

Figure 3-32 Reeve the Bottom Block

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Harrington-hoists-and-cranes RH Wire Rope Hoist User Manual Page 36