Manitowoc 888 Series Quick Start Manual

Manitowoc Cranes, Inc.
Manitowoc, Wisconsin 54220 U.S.A.
Luffing Jib Raising Procedure
Fixed Jib No. 138 On Luffing Jib No. 135 On Boom No. 22EL
Recommended boom, luffing jib and fixed jib raising and lowering procedure
888 SERIES 2 must be equipped with 179,100 Lb. (81 240 kg) crane counterweight and 44,000 Lb. (19 960 kg) carbody
counterweight for raising and lowering various boom, luffing jib and fixed jib combinations. Refer to fixed jib assembly No. 179361
and luffing jib rigging assembly No. 177063 or No. 177354 (without intermediate fall) or No. A07691 (with intermediate fall) for
boom, luffing jib and fixed jib make-up of inserts, pendants, backstays and miscellaneous parts, etc.
Three methods may be used to raise and lower boom, luffing jib and fixed jib combinations, depending on length.
A. Fold Under Jack-Knife Method
Raising:
Boom and luffing jib are assembled in fold under position. Boom and luffing jib must be inline over front of blocked
crawlers prior to raising boom and luffing jib. Slowly raise boom, luffing jib point wheels will roll along ground. When
luffing jib hinge pin is 30 Ft. (9.1m) off ground, attach luffing jib pendants and fixed jib backstays. Place fixed jib backstays
on ground clear of luffing jib point wheels. 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 still on ground.
Slowly raise luffing jib to 10 degrees ahead of vertical with luffing jib hoist leaving wheels on ground. Attach assembled
fixed jib to luffing jib top. Attach fixed jib backstay pendants to fixed jib strut. Attach fixed jib stop to fixed jib butt and
temporarily tie off to fixed jib strut. Boom and luffing jib are raised together using boom hoist while fixed jib point wheel
rolls on ground. Continue raising until fixed jib suspension tightens. Attach fixed jib stop to luffing jib top. Boom, luffing jib
and fixed jib are then raised together using boom hoist until boom reaches desired boom operating angle. Fixed jib radius
must be within capacity chart before swinging over side of machine.
Lowering:
Position boom at 75 degrees with boom, luffing jib and fixed jib inline over front of blocked crawlers prior to lowering luffing
jib. Lower luffing jib until luffing jib angle reaches 10 degrees ahead of vertical. Maintain 10 degrees ahead of vertical angle
with luffing jib while lowering boom until fixed jib point wheel contacts ground. Remove fixed jib stop from luffing jib top
and temporarily tie off to fixed jib strut. Lower boom as fixed jib point wheel rolls on ground. Maintain 10 degrees ahead of
vertical luffing jib angle and lower boom until luffing jib point wheels contact ground. Remove fixed jib from luffing jib.
Raise boom slightly, and slowly lower luffing jib to vertical. Slowly boom down and assist luffing jib point wheels in fold
under direction. Continue to lower boom while luffing jib point wheels roll along ground. Boom down until luffing jib hinge
pin is 30 Ft. (9.1m) off ground. Disconnect luffing jib pendants and fixed jib backstays (if still attached). 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, luffing jib and fixed jib combinations in Table 1 and Table 2 may be raised and lowered using fold under jack-knife method.
Boom lengths shown with asterisk (*) require lower boom point to be removed. Boom length shown with pound sign (#) requires
only the middle two sheaves in lower boom point. All other sheaves must be removed from lower boom point.
TABLE 1 - 888 SERIES 2 Without Intermediate Fall
Maximum Boom, Luffing Jib And Fixed Jib Lengths
Lifted Unassisted Over Front Of Blocked Crawlers
Using Fold Under Jack-Knife Method
Luffing Jib No. 135
Boom Length
Feet Meters Feet
160 48.8 140
180 54.9 140 - 160 42.7 - 48.8
#190 57.9 140 - 170 42.7 - 51.8
*200 61.0 140 - 170 42.7 - 51.8
Load blocks, hook and weight ball on ground until boom,
luffing jib and fixed jib are erected.
Fixed Jib No. 138
Meters Feet Meters
42.7 30 - 60 9.1 - 18.3
30 - 60 9.1 - 18.3
30 - 60 9.1 - 18.3
30 - 60 9.1 - 18.3
888 SERIES 2
TABLE 2 - 888 SERIES 2 With Intermediate Fall
Maximum Boom, Luffing Jib And Fixed Jib Lengths
Lifted Unassisted Over Front Of Blocked Crawlers
Using Fold Under Jack-Knife Method
Luffing Jib No. 135
Boom Length
Feet Meters Feet Meters
160 48.8 140 42.7
180 54.9 140 - 160 42.7 - 48.8
*190 57.9 140 - 170 42.7 - 51.8
*200 61.0 140 - 150 42.7 - 45.7
Load blocks, hook and weight ball on ground until boom,
luffing jib and fixed jib are erected.
Fixed Jib No. 138
Feet Meters
30 - 60 9.1 - 18.3
30 - 60 9.1 - 18.3
30 - 60 9.1 - 18.3
30 - 60 9.1 - 18.3
7826-B, 9-26-03/GA
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