14000
Luffing Jib Raising Procedure
Luffing Jib No. 135 on Boom No. 76
Manitowoc Cranes, Inc.
8799-A, 2016-06-03
Manitowoc, Wisconsin 54220 U.S.A.
5/6
C. Fold Under Jack-Knife Method:
Raising:
Boom and luffing jib are assembled in fold under position. Slowly raise boom; luffing jib point wheels will roll along
ground. When luffing jib hinge pin is 30 Ft. (9.1m) off ground, connect luffing jib pendants. Move luffing jib top wire rope
guide to working position. Tighten luffing jib suspension with luffing jib hoist. Slowly raise boom until luffing jib is vertical
and luffing jib point wheels are clear of ground. 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 range. Luffing jib radius must be
within capacity chart before swinging over side of machine, when raising over end of blocked crawlers.
Lowering:
Position boom at 75 degrees prior to lowering luffing jib. Slowly lower luffing jib to vertical. Lower boom until luffing jib
point wheels are just clear of ground. Slowly boom down and assist luffing jib point wheels in fold under direction. Boom
down until luffing jib hinge pin is 30 Ft. (9.1m) off ground. Disconnect luffing jib pendants. Move luffing jib top wire rope
guide to stowed position. Raise luffing jib strut with luffing jib hoist until luffing jib strut is in line with luffing jib. Lower
boom and luffing jib to ground.
Boom and luffing jib combinations in following tables may be raised and lowered using fold under jack-knife method.
WITH OR WITHOUT BOOM CATWALKS
14000 SERIES 1
Maximum Boom and Luffing Jib Lengths Lifted Unassisted
Using Fold Under Jack-Knife Method
Boom
Length
Over End of Blocked Crawlers Over Side of Crawlers
Luffing Jib No. 135 Luffing Jib No. 135
Feet Meters Feet Meters Feet Meters
95.1 29,0
70.0
21,3 70.0 21,3
105.0 32,0 70.0 - 80.0 21,3 - 24,4 70.0 - 80.0 21,3 - 24,4
114.8 35,0 70.0 - 90.0 21,3 - 27,4 70.0 - 90.0 21,3 - 27,4
124.7 38,0 70.0 - 100.0 21,3 - 30,5 70.0 - 100.0 21,3 - 30,5
134.5 41,0 70.0 - 110.0 21,3 - 33,5 70.0 - 110.0 21,3 - 33,5
144.4
(a) 154.2
44,0 70.0 - 120.0 21,3 - 36,6 — —
47,0 70.0 - 130.0 21,3 - 39,6 — —
Load blocks, hook and weight ball on ground until boom and luffing jib are erected.
(a) Requires lower boom point to be removed.
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