16000 SERIES 2, 3
Luffing Jib Raising Procedure
Luffing Jib No. 59 on Boom No. 58 HL
Manitowoc Cranes, Inc. 8731-A, 2006-01-06
Manitowoc, Wisconsin 54220 U.S.A. 1/2
EN 13000
Recommended boom and luffing jib raising and lowering procedure.
16000 SERIES 2 must be equipped with 296,000 lb (134 260 kg) crane counterweight
and 60,000 lb (27 220 kg) carbody counterweight; 16000 SERIES 3 must be equipped
with 332,000 lb (150 590 kg) crane counterweight and 120,000 lb (54 430 kg) carbody
counterweight. Refer to luffing jib rigging assembly No. A13555 for boom and luffing jib
make-up of inserts, straps, struts, strut raising and lowering procedure, jib stop setup
and operation and miscellaneous parts, etc. Refer to Operator’s Manual for set-up and
installation.
Boom and luffing jib combinations must be raised and lowered using jack-knife
method.
Caution: Anytime luffing jib point rollers are in contact with ground during raising or
lowering procedure, disengage swing lock and release swing brake.
Raising:
Position jib stop to clear jib butt. Luff up jib strut until straps on inserts are clear of
strap supports. Slowly raise boom while jib point rollers are allowed to roll on ground.
Tension should be applied to luffing jib hoist to keep jib straps above strap supports.
Boom up until boom to luffing jib angle reaches 145 degrees. Lower jib stops to
operating position. 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.
Lowering:
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
rollers contact ground. Continue to lower boom while luffing jib rollers roll along
ground until boom to luffing jib angle reaches 145 degrees. Position jib stop to clear
jib butt. Keep enough tension on luffing jib hoist to keep jib straps above strap
supports. Continue to lower boom while luffing jib rollers roll along ground.
CAUTION: Do not under any condition allow boom to luffing jib angle to become less
than 70 degrees.
