Boom Removal - Manitowoc Grove RT540E Service Maintenance Manual

BOOM
3
5. Attach a length of rope to the boom extension tip to aid in
swinging the boom extension into place ahead of the
boom nose.
6. Raise the boom to horizontal and extend the boom
approximately 51 to 64 cm (20 to 25"). Make certain that
the boom extension stowage lugs clear the guide pins
(Figure 4-4, 1) and ramp (Figure 4-3, 4) on the front and
rear stowage brackets.
6821-3
When removing the boom extension, ensure that all
personnel and equipment are kept clear of the swing path.
7. Slightly raise and/or lower the boom to help control the
boom extension. Using the rope attached to the top of
the boom extension, manually swing the extension into
place ahead of the boom nose.
8. Attach a lifting device to the lifting lugs on the swingaway
extension taking pressure off the attaching pins
(Figure 4-2, 1). Remove the pins.
4-6
4
6821-1
FIGURE 4-3
FIGURE 4-4
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Published 4-20-2015, Control # 502-01
9. Place the now free swingaway extension in a safe
secure location.

BOOM REMOVAL

Do not attempt to work on the boom without experienced
supervision.
To prevent serious injury or death, always wear personal
protective equipment; i.e., a hard hat, eye protection,
gloves and metatarsal boots.
NOTE: The boom may be disassembled with the base
section left on the crane if repair of the base section
is not necessary.
NOTE: The
approximately 5800 kg (12,740 lb) without the
swingaway boom extension attached. Removal of
the swingaway boom extension will simplify boom
removal.
1. Extend and set the outriggers to level the crane and
ensure the boom is fully retracted and in a horizontal
position over the front of the crane.
2. Fully retract the Boom.
Wear gloves when handling wire rope.
3. Remove the hook block or headache ball and wind all
1
the wire rope onto the hoist drum.
4. Elevate the boom slightly so that the lift cylinder is
extended approximately 30.48 cm (12 in) to allow for
withdrawal of the lift cylinder rod end from the lift cylinder
lift box on the bottom of the boom.
Ensure the boom lift cylinder is properly supported before
disconnecting it from the boom.
Ensure all blocking and lifting devices are capable of
supporting the boom assembly.
5. Shut down hydraulic power to crane.
6. With hydraulic power removed, move the Boom Extend
control from "EXTEND" to "RETRACT" several times.
This will relieve most residual pressure in Tele Circuit
and make Tele Cylinder removal easier.
RT540E SERVICE MANUAL
DANGER
complete boom assembly
DANGER
DANGER
weighs