SET-UP AND INSTALLATION MLC650 OPERATOR MANUAL
4-144
Published 08-12-19, Control # 224-13_v2
Removing Boom Butt and 4M
See Figure 4-111 for the following procedure:
1. Lower the live mast to approximately 158°.
2. Extend the self-erect cylinder (1) as needed to connect
the appropriate slings (5 and 6) and shackles (7 and 8).
3. Retract the self-erect cylinder to remove slack from the
slings.
Make sure the self-erect cylinder is vertical before lifting
against the boom.
See Figure 4-112
for the following procedure:
4. Install the pin puller cage (2) and hand-held pin puller
(1). See "Connect Hand-Held Pin Puller" on page 4-37
for more information.
5. Connect hydraulic hoses to the rotating bed and pin
puller connection.
6. Retract the self-erect cylinder to lift the boom butt and
4M to a horizontal position as shown.
7. Remove the safety pin from the keeper plate and rotate the keeper plate (4, both sides) up.
FIGURE 4-111
Item Description
1 Self-Erect Cylinder
2Live Mast Strap
3 Rod End
4 SH 1 Shackle – 55 t (60.60 USt) (qty 2)
5 SL 1 Sling – 3, 30 m (10.83 ft), 45 360 kg (100,000 lb) (qty 2)
6 SL 2 Sling – 3, 10 m (10.30 ft), 18 144 kg (40,000 lb) (qty 2)
7 SH 3 Shackle – 40 t (44 USt) (qty 2)
8 SH 2 Shackle – 17 t (18.70 USt) (qty 2)
CAUTION
Avoid Structural Damage to Mast or Cylinder!
• Do not attempt to raise the boom butt with the mast.
• Use only the self-erect cylinder to raise the boom butt
during the following steps.
WARNING
Crushing Injury Hazard!
Stand outside of the boom to prevent serious crushing
injury, do not stand inside the boom sections when
removing the connector pins.
To Next Page
Loading...
Need help?
General
