Manitowoc CD25, Руководство оператора, Страница: 103 / 160

5-3
CD25 ATTACHMENTS
5
Published 1-06-2017 Control # 579-01
Offset Boom Head +60° (Figure 5-6)
Run rope above pin #1 and between pin #2 and sheave
wheel.
Offset Boom Head +80° (Figure 5-7)
Run rope above pin #1 and between pin #2 and sheave
wheel.
Adjusting the Boom Extension Offset
The boom extension offset is adjusted by moving the boom
head to a minus 15° or 30°. With the extension attached it is
necessary to raise or lower both the extension and the boom
head simultaneously.
1. Lower the hook and ball to the ground.
2. Provide adequate support at the end of the extension.
Use another crane or hoist to support the extension.
3. Remove the retaining clip and rope retention pin from
the top of the boom head (Figure 5-4).
4. With the extension supported, remove the lynch pin and
pivot lock pin. It will be necessary to remove the weight
on the pin in order to remove it.
5. Raise or lower the main boom until the desired offset
angle is achieved. (Figure 5-3).
6. Install the pivot lock pin and lynch pin.
7. Install the rope retention pin and retaining clip into the
top of the boom head (Figure 5-4).
8. Raise the hook and ball. Check that the wire rope is
engaged in all the sheaves in the boom, hoist block and
hoist drum.
8537-1
FIGURE 5-6
Wire Rope
Pin #1
Pin #2
8537-2
FIGURE 5-7
Wire Rope
Pin #1 Pin #2
WARNING
Crushing Hazard!
The boom extension is very heavy. Use another crane or
hoist to support the extension from falling when the pivot
lock pin is removed and adjusting the extension angle.
A falling boom can cause serious injury or death.
Reference Only