SECTION 4 – BOOM
4-4 USTC January 15, 2001
Figure 4-5. Cable Reeving
ONE-PART LINE FOUR-PART LINETWO-PART LINE THREE-PART LINE
The following sections define how to reeve the wire
rope for the different parts of line assuming the ap-
propriately sized hookblock is installed with the
correct number and size of sheaves.
Single-Part Line Reeving
Note: The following procedure must be followed and
used before lifting any load with single-part line.
1. Lower boom to allow access to boom nose
upper and lower sheave wheels, and hoist cable
retaining pins.
2. Pay out enough hoist cable so end of cable
extends beyond boom nose.
3. If not already done, reeve hoist cable through
base and mid-boom cable guides on top of
boom.
4. Remove upper and lower hoist cable retaining
pins on boom nose.
5. Reeve hoist cable through the boom nose over
the upper sheave wheel and lower right sheave
wheel.
6. If not already done, install cable socket onto the
end of the hoist cable.
7. Attach cable socket to the headache ball assem-
bly using the 1-1/4 in. diameter straight pin and
secure with clip pins provided. Use center
(lower) pin hole of headache ball/hookblock
combination in headache ball configuration.
8. Reinstall anti-two-block counterweight around
the hoist cable and adjust counterweight chain
length to activate cut-off switch before two-
blocking occurs.
Courtesy of Crane.Market
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