Manitowoc MLC165 User manual

Manitowoc Cranes

9304-A, 2015-11-09

Manitowoc, Wisconsin 54220 U.S.A.

1/3

MLC165

Luffing Jib Raising Procedure

Luffing Jib No. 135 on Boom No. 74

Recommended boom and luffing jib raising and lowering procedure

MLC165 SERIES 1 must be equipped with 99,500 lb crane counterweight and 0 lb carbody counterweight; MLC165

SERIES 2 must be equipped with 121,500 lb crane counterweight and 35,300 lb carbody counterweight. Refer to luffing

jib rigging assembly No. 81022481 for boom and luffing jib make-up of inserts, pendants, struts, strut raising and

lowering procedure, jib stop setup and operation and miscellaneous parts, etc. Refer to Operator’s Manual for setup 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 if equipped, and release swing brake.

Raising:

Luff up jib strut to keep luffing jib strut off luffing jib during boom raising. Slowly raise boom while luffing jib point wheels

are allowed to roll on ground. When luffing jib stop strut is just clear of ground, attach luffing jib stop pendants and unpin

luffing jib stop inner strut from retracted position. Slowly raise boom until luffing jib stop strut is fully extended and pins

engaged (approximately 168 degree boom-to-luffing jib angle). Continue to boom up with luffing jib wheels rolling on

ground until boom-to-luffing jib angle reaches value specified in Tables 1 and 2 or vertical, whichever occurs first.

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 front 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 Tables 1 and 2. Lower boom until luffing jib point wheels contact ground. If luffing jib is hanging vertical, raise

luffing jib a few degrees forward of vertical. Continue to lower boom while luffing jib wheels roll along ground. Keep

enough tension on luffing jib hoist to keep luffing jib strut off luffing jib. Stop lowering boom when luffing jib stop pendants

start to go into tension (approximately 168 degree boom-to-luffing jib angle). Disengage luffing jib stop strut pins and

lower boom to retract luffing jib stop inner strut. Pin strut in retracted position.

Caution: Do not under any condition allow boom to luffing jib angle to become less than 60 degrees.

REFERENCE ONLY!

9304-A, 2015-11-09

Manitowoc Cranes

2/3

Manitowoc, Wisconsin 54220 U.S.A.

MLC165

Luffing Jib Raising Procedure

Luffing Jib No. 135 on Boom No. 74

Refer to Tables 1 and 2 for raising ability with the maximum weight of load blocks, hooks, weight balls,

slings and hoist lines beneath boom and jib point sheaves. Raising with blocks requires luffing jib wire

rope guard per delta note 36 on rigging drawing. For block weights shown with #, load blocks, hooks,

weight balls and slings must remain on ground until combined weights are within rated capacity of chart.

Table 1

MLC165 SERIES 1

Boom

Length

Boom to

Luffing

Jib Angle

Over Front of Blocked Crawlers Over End or Side of Crawlers

Boom to

Luffing Jib

Angle

Weight Under Load Point

Boom Jib Boom Jib Boom Jib Boom Jib

# # 6,100 lb 2,300 lb # # 6,100 lb 2,300 lb

Feet Degrees Luffing Jib Length - Feet Degrees

68.9 168 70.0 - 170.0 70.0 - 120.0 70.0 - 130.0 70.0 - 90.0 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

78.7 168 70.0 - 150.0 70.0 - 100.0 70.0 - 110.0 — 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

88.6 168 70.0 - 120.0 70.0 70.0 - 90.0 — 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

98.4 168 70.0 - 100.0 —70.0 — 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 130.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

108.3 168 70.0 - 80.0 — —— 168

90 70.0 - 170.0 70.0 - 160.0 70.0 - 170.0 —90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 110.0 60

118.1 90 70.0 - 170.0 — 70.0 —90

60 70.0 - 170.0 70.0 - 150.0 70.0 - 170.0 —60

128.0 90 70.0 - 150.0 ———

60 70.0 - 170.0 ———

(a)137.8 60 70.0 - 170.0 — ——

(a) Requires lower boom point to be removed.

REFERENCE ONLY!

Manitowoc Cranes

9304-A, 2015-11-09

Manitowoc, Wisconsin 54220 U.S.A.

3/3

MLC165

Luffing Jib Raising Procedure

Luffing Jib No. 135 on Boom No. 74

Table 2

MLC165 SERIES 2

Boom

Length

Boom to

Luffing Jib

Angle

Over Front of Blocked Crawlers Over End or Side of Crawlers

Boom to

Luffing Jib

Angle

Weight Under Load Point

Boom Jib Boom Jib Boom Jib Boom Jib

# # 6,100 lb 2,300 lb # # 6,100 lb 2,300 lb

Feet Degrees Luffing Jib Length - Feet Degrees

68.9 168 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 140.0 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

78.7 168 70.0 - 170.0 70.0 - 150.0 70.0 - 160.0 70.0 - 120.0 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

88.6 168 70.0 - 170.0 70.0 - 130.0 70.0 - 140.0 70.0 - 90.0 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

98.4 168 70.0 - 160.0 70.0 - 110.0 70.0 - 120.0 70.0 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

108.3 168 70.0 - 140.0 70.0 - 80.0 70.0 - 100.0 — 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

118.1 168 70.0 - 110.0 — 70.0 - 80.0 — 168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 130.0 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 60

128.0 168 70.0 - 90.0 ———

168

90 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 — 90

60 70.0 - 170.0 70.0 - 170.0 70.0 - 170.0 70.0 - 150.0 60

137.8 168 70.0 ———

168

90 70.0 - 170.0 — 70.0 - 130.0 — 90

60 70.0 - 170.0 70.0 - 130.0 70.0 - 170.0 — 60

147.6 90 70.0 - 170.0 — — — 90

60 70.0 - 170.0 — 70.0 - 150.0 —60

157.5 60 70.0 - 170.0 ———

(a)167.3 60 70.0 - 170.0 ———

(a) Requires lower boom point to be removed.

REFERENCE ONLY!

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