9253-A, 2013-03-19
2/3
18000 With
21000 MAX-ER
Luffing Jib Raising Procedure
Luffing Jib No. 79A on Boom No. 55 or No. 55A
with 140 ft (42,7 m) Mast No. 56
Hanging Counterweight
Manitowoc Cranes
Manitowoc, Wisconsin 54220 U.S.A.
EN 13000
WITH OR WITHOUT BOOM AND/OR JIB CATWALKS
Maximum Boom and Luffing Jib Lengths Lifted Unassisted Using Jack-Knife Method
Boom
Length
Over End of Blocked Crawlers Over Side of Crawlers
0 lb (0 kg) Hanging Counterweight
Luffing Jib No. 79A
Boom to
Luffing Jib
Angle Luffing Jib No. 79A
Boom to
Luffing Jib
Angle
Feet Meters Feet Meters Degrees Feet Meters Degrees
160 48,8 90 - 130 27,4 - 39,6 140 90 - 110 27,4 - 33,5 140
150 - 270 45,7 - 82,3 90 130 - 210 39,6 - 64,0 90
290 - 310 88,4 - 94,5 70 230 - 310 70,1 - 94,5 70
180 54,9 90 - 210 27,4 - 64,0 90 90 - 110 27,4 - 33,5 90
230 - 310 70,1 - 94,5 70 130 - 270(a) 39,6 - 82,3 70
200 61,0
90 - 190 27,4 - 57,9 70 —
——
Load blocks, hook and weight ball on ground until boom and luffing jib are erected.
(a) Machine must equipped with optional upperworks jacking cylinders.