STT293 CONCISE TOWER CRANE MANUAL
-45- EURC1.0ENG
- Hoist the single hook block (4) against the trolley (jib) (see Fig.).
- Remove the trolley connection pin (8) between both trolleys (1) and
(2).
- When the trolley (2) is being run out, both trolleys become separated.
- Reinstall the connecting pin (8) and cotter pins (9) on the rear trolley.
This concludes the transition from dual (4-rope) reeving to single (2-rope)
reeving.
Fig. 1.5.1-2
ATTENTION:
- If operating a significant amount of time with single reeving,
the following periodic maintenance must be performed.
- Convert to dual reeving; let the trolley run a few times over
the entire jib length while veering and hoisting the load hook
over the entire hoisting height.
- Revert to single (2-rope) reeving
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