Manitowoc 999 User Manual

Reference Only
SETUP AND INSTALLATION 999 LUFFING JIB OPERATOR MANUAL
4-62
Published 05-15-17, Control # 043-09
Anchoring Wire Rope to Drum
See Figure 4-35 for the following procedure.
Use the correct wedge part number for the size of wire rope
being used. See the parts drawing for the boom hoist drums
or for the load drum shaft to obtain the correct part number.
1. Assemble wire rope and wedge to drum socket.
2. Tighten wedge, rapping back of wedge with a brass drift
pin and hammer.
Winding Wire Rope onto Drum
See Drum and Lagging Chart in Capacity Chart Manual for
correct size of drum laggings, if used.
See Wire Rope Specifications Chart in Capacity Chart
Manual for correct type, size, and amount of wire rope to be
installed on load drums.
See Boom Rigging Drawing at end of this section for correct
type, size, and amount of wire rope to be installed on boom
hoist drums.
1. Carefully inspect drums and all rope guides, rollers, and
sheaves for defects that can cause wire rope to wear or
be cut. If defects cannot be fixed, replace faulty parts.
2. Apply tension to wire rope as it is wound slowly onto
drum.
First wrap must be tight against drum flange for
approximately three-fourths of drum diameter (see
Figure 4-36
).
3. Tap adjacent wraps against each other with a soft metal
or wooden mallet.
Use extreme care not to put twists or turns in wire rope;
allow rope to assume its natural lay.
WARNING!
Falling Load Hazard!
Wire rope can be pulled out of drum if the following steps
are not taken.
• Install straight wedge so corrugated side is against
wire rope.
• Install wedge so end of wire rope extends past end of
wedge, but not out of drum socket.
• Make sure seizing is not under wedge. Remove
seizing if it interferes with assembly.
FIGURE 4-34
Place free end of seizing wire in valley between two stands.
Then wind seizing wire over free end as shown. Finally, twist
and pull two ends of seizing wire together until seizing is tight.
View A
A925
Rope Diameter 1 in (26 mm) and Larger
View B Rope Diameter Smaller than 1 in (26 mm)
Wind seizing wire around wire rope as shown. Then twist two
ends of seizing wire together at center of seizing. Alternately
twist and pull ends until seizing is tight.
Wire Rope Type
Seizings
Required
Preformed 1
Non-preformed 3
FIGURE 4-35
Hole in
Drum Flange
Straight Wedge
Inside Drum
Straight Wedge
Outside Drum
Don’t Allow End of
Wire Rope to Extend
Out of Socket Opening
Seizing
Seizing
Wire
Rope
Wire
Rope

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English