Manitowoc 1800 Quick Start Manual

Manitowoc Cranes, Inc.
Manitowoc, Wisconsin 54220 U.S.A.
Luffing Jib Raising Procedure
Luffing Jib No. 79A on Boom No. 55 or No. 55A
with 140 Ft. (42.7m) Mast No. 56
Wheeled Counterweight
Machine must be equipped with 492,000 Lb. (223 170 kg) crane counterweight, 320,000 Lb.
(145 150 kg) carbody counterweight and 0 Lb. (0 kg), 464,000 Lb.
(390 090 kg)
and luffing jib make-up of inserts, straps, struts, strut raising procedure, jib stop positioner setup
and operation, jib stop raising and lowering procedure and miscellaneous parts, etc.
Boom and luffing jib combinations must be raised and lowered using jack-knife method.
Release swing brake (disengage swing lock) and slowly raise boom while jib point dolly is
allowed to roll on ground. Tension should be applied to luffing jib hoist to keep jib strut off
luffing jib during boom raising. Boom up until boom to luffing jib angle reaches 140 degrees.
Extend jib stop positioner cylinders (see procedure). Continue to boom up until boom to
luffing jib reaches value specified in table. Tighten luffing jib suspension with luffing jib
hoist. Boom and luffing jib are then raised together using boom hoist until boom reaches
desired boom operating angle. Luffing jib radius must be within capacity chart before
swinging over side of machine when raising over end of blocked crawlers.
Position boom at 85 degrees prior to lowering luffing jib. Lower luffing jib until boom to
luffing jib angle reaches value specified in table. Lower boom until luffing jib point is just
above ground. Position dolly under upper jib point, then lower upper jib point onto dolly.
Release swing brake (disengage swing lock) and continue to lower boom while luffing jib
rolls along ground until boom to luffing jib angle reaches 140 degrees. Keep enough tension
on luffing jib hoist to keep jib strut off luffing jib. Retract jib stop positioner cylinders (see
procedure). Continue to lower boom while luffing jib rolls along ground.
CAUTION: Do not under any condition allow boom to luffing jib angle to become less than
Maximum Boom and Luffing Jib Lengths Lifted Unassisted Using Jack-Knife Method
Boom
Length
Feet
160
180
200
Load blocks, hook and weight ball on ground until boom and luffing jib are erected.
Recommended boom and luffing jib raising and lowering procedure.
wheeled counterweight. Refer to luffing jib rigging assembly No. A08238 for boom
70 degrees.
WITH OR WITHOUT BOOM AND/OR JIB CATWALKS
Over End of Blocked Crawlers
Luffing Jib No. 79A
Meters Feet Meters
48.8 90 - 130 27.4 - 39.6
150 - 270 45.7 - 82.3
290 - 310 88.4 - 94.5
54.9 90 - 210 27.4 - 64.0
230 - 310 70.1 - 94.5
90 - 190 27.4 - 57.9
61.0
Over Side of Crawlers
0 Lb. (0 kg) Wheeled Counterweight
Boom to
Luffing Jib
Angle Luffing Jib No. 79A
Degrees Feet
140 90
90 110 - 210
70 230 - 310
90 90 - 110
70 130 - 270
70 —
18000 With
21000 MAX-ER
or 860,000 Lb.
(210 470 kg)
Boom to
Luffing Jib
Angle
Meters Degrees
27.4 140
33.5 - 64.0 90
70.1 - 94.5 70
27.4 - 33.5 90
39.6 - 82.3 70
— —
8596-A, 2011-10-07/GA
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