Manitowoc MLC300 Operator's Manual
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Manitowoc MLC300 Operator's Manual

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Manitowoc MLC300
Operator Manual
Luffing Jib Attachment

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Summary of Contents for Manitowoc MLC300

  • Page 1 Manitowoc MLC300 Operator Manual Luffing Jib Attachment...
  • Page 3 ™ The serial number of the crane and applicable attachments (i.e. luffing jib, VPC-MAX is the only method your Manitowoc dealer or the Manitowoc Crane Care Lattice Team has of providing you with correct parts and service information. The serial number is located on a crane identification plate attached to the operator cab and each attachment.
  • Page 4 THE ORIGINAL LANGUAGE OF THIS MANUAL IS ENGLISH...

  • Page 5: Table Of Contents

    Manitowoc Dealer........
  • Page 6 Manitowoc Supplied Lifting Slings and Shackles ........
  • Page 7 MLC300 LUFFING JIB OPERATOR MANUAL TABLE OF CONTENTS Removing Lower Boom Point ............4-15 Removing Sheave Clusters from Lower Boom Point .
  • Page 8 TABLE OF CONTENTS MLC300 LUFFING JIB OPERATOR MANUAL Anchoring Wire Rope to Button Socket ......... . . 4-93 Pad Eye Usage for Wire Rope Reeving .
  • Page 9 Manitowoc Dealer........
  • Page 10 MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 1-ii Published 06-10-19, Control # 239-12...

  • Page 11: Section 1

    • A yellow arrow (2) and dot (3) on the right top and right If you are the new owner of a Manitowoc crane, please front sides of the carbody indicate the FRONT of the register it with Manitowoc Crane Care so we can contact you...

  • Page 12: Identification And Location Of Components

    INTRODUCTION MLC300 LUFFING JIB OPERATOR MANUAL IDENTIFICATION AND LOCATION OF COMPONENTS Item Description #500 Boom Main Hoist (Drum 1) Luffing Hoist (Drum 6) Model MLC300 Auxiliary Hoists (Drum 2 and 3) Boom Hoist (Drum 4)(without VPC-MAX) OR Live Mast Hoist (Drum 4)(with VPC-MAX)
  • Page 13 MLC300 LUFFING JIB OPERATOR MANUAL INTRODUCTION With Optional VPC-MAX Attachment FIGURE 1-3 continued Manitowoc Published 06-10-19, Control # 239-12...

  • Page 14: English And Metric Conversions

    INTRODUCTION MLC300 LUFFING JIB OPERATOR MANUAL ENGLISH AND METRIC CONVERSIONS Inverse Conversion DIVIDE (÷) known value by conversion factor to obtain Direct Conversion equivalent value in desired units. For example, 3,6576 m is MULTIPLY (x) known value by conversion factor to obtain converted to feet, as follows: equivalent value in desired units.
  • Page 15 MLC300 LUFFING JIB OPERATOR MANUAL INTRODUCTION To Convert Symbol Application Symbol Multiply By VOLUME (LIQUID) Ounce Milliliter 29.5735 Pint Liter 0.4732 Fluid Capacities Quart Liter 0.9464 Gallon Liter 3.7854 Gallon Per Minute Pump Flow Liters Per Minute L/min 3.7854 WEIGHT...
  • Page 16 INTRODUCTION MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK Published 06-10-19, Control # 239-12...

  • Page 17: Section 2

    Personnel Handling Policy ............2-24 Manitowoc...
  • Page 18 MLC300 LUFFING JIB OPERATOR MANUAL Pedestal/Barge Mounted Cranes ........... 2-25 Pedestal Mounted Crane .

  • Page 19: Continuous Innovation

    If you are in Used with the safety alert symbol, indicates a hazardous doubt about any procedure, contact your Manitowoc dealer situation which, if not avoided, could result in minor or or the Manitowoc Crane Care Lattice Team.
  • Page 20 SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL Table 2-1 Common Safety Symbols Cut or Crush Hazards Cut Hazard M100090 M100091 M100066 M100065 M100069 M100067 Fire Crush Hazards Extinguisher M100070 M100071 M100072 M100073 M100074 M100082 Explosion Fall Hazards Falling Boom (Crush) Hazards...

  • Page 21: Safety And Information Signs

    MLC300 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION Table 2-1 Common Safety Symbols Emergency Cab Exit Table 2-2 Miscellaneous Symbols Engine Coolant Diesel Fuel Engine Coolant Engine Oil Level Hydraulic Filter Hydraulic Oil Vent M100271 M100267 M100268 M100269 M100272 M100273 Pump Drive Oil...
  • Page 22 SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL Item Description Operator Cab Platform with Handrails Carbody Platform (both ends and sides) Mast Platform Engine Enclosure (non-skid) Rotating Bed Handrails (both side) Folding Ladder (left side only) Rotating Bed Platform (both sides)
  • Page 23 MLC300 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION Typical Boom Sections Typical Luffing Jib Sections FIGURE 2-1 continued Manitowoc Published 06-10-19, Control # 239-12...

  • Page 24: Crane Access Points

    Manitowoc has provided ladders and platforms at the When personnel use ladders to get on or off the crane, their locations shown in Figure 2-1 on page 2-5.

  • Page 25: Personal Fall-Protection

    MLC300 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION PERSONAL FALL-PROTECTION Item Description Manitowoc has provided lifelines and anchors throughout the Lifeline crane and attachment (see Figure 2-2) to which workers can Anchor attach their personal fall-protection equipment. WARNING Fall Hazard! To prevent falling from any height during crane assembly and disassembly, personnel shall wear fall-protection equipment.

  • Page 26: Operator Manual/Capacity Chart Storage

    SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL OPERATOR MANUAL/CAPACITY CHART contact your Manitowoc dealer for the proper manual or capacity charts. STORAGE Do not operate crane or attachment if proper Capacity General Chart is not in cab. Manitowoc provides the following manuals and other...

  • Page 27: Safe Operating Practices

    National Standard, or in any other applicable federal, state, planners, rigging personnel, and job site personnel in safe or local laws. operation. Manitowoc cannot foresee all hazards that will Operator training and qualification is crane owner’s arise in the field; therefore, safety remains responsibility responsibility.
  • Page 28 SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL operation, the crane must not be operated until unsafe All attachments are properly assembled and conditions have been corrected. attached to the crane according to the rigging drawings called for in the Capacity Chart.

  • Page 29: Handling Load

    NOTE: Capacity charts for Manitowoc cranes show the and the like. total weight of freely suspended loads for various Do not operate the crane with a snow or ice covered boom and jib lengths and operating radii.

  • Page 30: Lifting/Moving Load

    SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL Secure unused legs of a multi-leg sling before handling from swinging out beyond the radius at which the a load with one leg of sling. load can be handled and to minimize the pendulum action of the load.

  • Page 31: Multiple Load Line Operation

    Engage the luffing hoist pawl when operating with Manitowoc authorizes multiple load line operation for those the luffing jib at a fixed radius. applications requiring it, provided the following steps are...

  • Page 32: Signals

    SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL SIGNALS Manitowoc’s Capacity Charts are based on freely suspended loads. To prevent side load damage to the Continuous communication must maintained boom, the jib, and the sheaves: between the operator and the signal person during all •...

  • Page 33: Safety Devices

    • Always tag-out any faulty safety device and place a Manitowoc provides the following operational aids on its warning tag in the cab stating that the crane is out of cranes, either as standard equipment or optional equipment.

  • Page 34: Category 2 Operational Aids

    SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL d. Clearly mark the boom or luffing hoist cable (so it Refer to the pendulum boom angle indicator on the can easily be seen by a designated signal person) boom butt (viewable from operator cab).

  • Page 35: Assembling, Disassembling, Or Operating Crane Near Electric Power And Transmission Lines

    WARNING dangerous. Electrocution Hazard! Set-Up and Operation Manitowoc cranes are not equipped with all features required to operate within OSHA 29CFR1926.1408, Table During crane use, assume that every line is energized A clearances when the power lines are energized. (“hot” or “live”) and take necessary precautions.

  • Page 36: Electrocution Hazard Devices

    SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL source. This person should have no other duties while The insulating characteristics of these devices can be the crane is working. compromised if not kept clean, free of contamination, and undamaged. Taglines should always be made of non-conductive materials.

  • Page 37: Refueling

    Safety information in this publication is intended only as a for any evidence of damage and all damaged parts are guide to assist qualified maintenance personnel in safe repaired or replaced as authorized by Manitowoc or your maintenance. Manitowoc cannot foresee all hazards that Manitowoc dealer.
  • Page 38 SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL Place a warning sign at the start controls alerting 12. Avoid battery explosion: do not smoke while performing other personnel that crane is being serviced and the battery maintenance or short across battery terminals to engine must not be started.

  • Page 39: Environmental Protection

    33. Perform a function check to ensure proper operation at connecting bolts or pins are being removed. the completion of maintenance or repair. 28. Unless authorized in writing by Manitowoc, do not alter ENVIRONMENTAL PROTECTION the crane in any way that affects the crane’s...
  • Page 40 SAFETY INFORMATION MLC300 LUFFING JIB OPERATOR MANUAL View A WRONG – DANGEROUS! and there is No Blocking If Boom is Off Ground Under Boom Sections... and Supported by Straps... Boom will COLLAPSE when Lower Pins are Removed! View B WRONG – DANGEROUS! Handling Pendants are Slack...

  • Page 41: Boom Disassembly Safety

    MLC300 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION BOOM DISASSEMBLY SAFETY blocking, individual pin connections may still be under load. Pins can be ejected forcefully if the boom has any pressure NOTE: The term “boom” used in the following instructions on it or if the boom is not supported properly.

  • Page 42: Personnel Handling Policy

    50 percent of the rated capacity conditions. for the radius and configuration of the crane. Use of a Manitowoc crane to handle personnel is acceptable • The crane is uniformly level within one percent of level provided: grade and located on a firm footing.

  • Page 43: Pedestal/Barge Mounted Cranes

    Manitowoc recommends that cranes be properly maintained, regularly inspected, and repaired as necessary. All safety signs must be in place and legible. We also urge Manitowoc crane owners to upgrade their cranes with rated capacity WARNING indicator/limiter systems for all lifting operations.

  • Page 44: Pedestal Mounted Crane

    NOTE: Manitowoc does not permit traveling on a barge c o n t a c t y o u r M a n i t o w o c d e a l e r f o r t h e deck with load.

  • Page 45: Capacity Charts For Barge Mounted Crane

    If crane boom or structure is shock loaded during operation, or there is any indication of shock loading, all Manitowoc provides two types of Capacity Charts for a crane structural components of crane must be inspected to mounted on a barge or other supporting structure under detect cracks and other damage.

  • Page 46: Barge Mount Definitions

    Machine List, as defined by Manitowoc, is the crane’s required. Correct each defect found before placing the crane out-of-level condition — from side-to-side — as into service.

  • Page 47: Section 3

    Wind Conditions ..............3-16 Manitowoc...
  • Page 48 MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 3-ii Published 06-10-19, Control # 239-12...
  • Page 49 MLC300 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES SECTION 3 OPERATING CONTROLS AND PROCEDURES This Section Starts on the Next Page Manitowoc Published 06-10-19, Control # 239-12...

  • Page 50: Standard Hand Signals For Controlling Crane Operations

    OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL STANDARD HAND SIGNALS FOR CONTROLLING CRANE OPERATIONS The following standard hand signals comply with ASME B30.5. Table 3-1 Standard Hand Signals for Crane Operation M100118 M100119 M100120 M100121 M100122 M100123 M100124...
  • Page 51 MLC300 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES Table 3-1 Standard Hand Signals for Crane Operation Item Description HOIST—With forearm vertical, forefinger pointing up, move hand in small horizontal circles. LOWER—With arm extended downward, forefinger pointing down, move hand in small horizontal circles.

  • Page 52: General Operation

    OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL Item Identification RCL/RCI Display Main Display Limit Bypass Switch Boom Hoist Park Switch Luffing Hoist Park Switch Boom Hoist and Swing Control Luffing Hoist Control Wind Speed Transmitter Mechanical Boom Angle Indicator...

  • Page 53: Luffing Jib Operating Controls

    Read and become thoroughly familiar with the MLC300 Main D is pl ay O pe r at io n M an ua l lo ca ted i n th e Op era tor Boom Angle Information Manual in the operator cab.

  • Page 54: Limit Bypass Switch

    OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL Boom-to-Luffing Jib Angle The boom’s angle is also shown in the RCL/RCI working screen. Shows the angle between the centerline of the boom and the centerline of the jib 11 – Crane Level (Figure 3-3 on page 3-5).

  • Page 55: Operating Limits Identification And Operation

    3-12. Cranes meeting European requirements (CE) are equipped with an RCI/RCL External Override Switch located outside the operator cab. See MLC300 Rated Capacity Indicator/Limiter Operation Manual. CE = Cranes that comply with 2010 European requirements. Only if boom or luffing jib is below allowable angle given in capacity chart (while raising or lowering boom and luffing jib from or to ground level).
  • Page 56 OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL The following table describes the operating limits this crane is equipped with. When a limit is reached, the operating limit fault is activated and the corresponding fault icon appears in the fault bar of the information screen in the main display.
  • Page 57 MLC300 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES Operating Limit Icon Function Diverted This limit prevents Drums 1 and 3 from being operated at the same time. Drum 3 must be parked to operate Drum 1. Drum 1 must be parked to operate Drum 3.
  • Page 58 OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL Operating Limit Icon Luffing Jib Maximum Up 2 (maximum angle) A limit switch stops the luffing jib when the boom-to-luffing jib angle is 170.5°. • This limit cannot be bypassed. • If this limit is contacted on cranes meeting CE requirements, the luffing jib cannot be raised until the M102783 limit is reset.
  • Page 59 MLC300 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES Operating Limit Icon Mast too Far Forward The fault alarm for this limit is activated when the live mast is lowered forward to 158° during crane assembly and disassembly. WARNING Falling Mast Hazard! M102785 Do not lower the mast below the specified angle.

  • Page 60: Bypassing Limits In Luffing Jib Setup Mode

    Go to the Luffing Jib Setup Screen (1) in the Main Display (Figure 3-5). See the MLC300 Main Display Operation Manual for detailed instructions. Turn the luffing jib setup mode ON (2). The luffing jib setup icon (3) in the Status Bar of the main display will turn orange.

  • Page 61: Resetting Luffing Jib Limits

    MLC300 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES RESETTING LUFFING JIB LIMITS When either prompt appears: Release the control handle to off. This procedure applies only to cranes meeting CE requirements. See Figure 3-6. Press either select button (3) to reset the limit.

  • Page 62: Drum And Control Handle Identification

    OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL DRUM AND CONTROL HANDLE IDENTIFICATION Drum Description Main Hoist Auxiliary Front Hoist (optional) Auxiliary Rear Hoist (optional) Boom Hoist (standard) OR Mast Hoist (VPC-MAX) Boom Hoist (VPC-MAX) Luffing or Auxiliary Hoist...

  • Page 63: Operating Precautions

    MLC300 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES OPERATING PRECAUTIONS is not permitted. See Maximum Allowable Travel Specification chart for details. Read and comply with the instructions in the Liftcrane • The Travel on Grade with VPC Luffing Jib Capacity charts provided with the luffing jib Unlocked fault will come on in the main attachment.

  • Page 64: Wind Conditions

    OPERATING CONTROLS AND PROCEDURES MLC300 LUFFING JIB OPERATOR MANUAL WIND CONDITIONS Wind speed (to include wind gusts) must be monitored by job planners and supervisors. Wind adversely affects lifting capacity and stability. The The wind speed at the boom or jib point can be greater than result could be loss of control over the load and crane, even the wind speed at ground level.
  • Page 65 Manitowoc Supplied Lifting Slings and Shackles ........
  • Page 66 MLC300 LUFFING JIB OPERATOR MANUAL Remove Position Light and Wind Speed Indicator ........4-63 Lower Jib Strut .

  • Page 67: General Setup And Installation

    This section contains installation and removal instructions for the #501 Luffing Jib Attachment used on the Model MLC300 cannot be reached from the ground or from Manitowoc without or with a VPC-MAX attachment.

  • Page 68: Personal Fall-Protection

    Item Description weights of the individual boom and jib components. Lifeline Anchor See the MLC300 Product Guide in Section 1 of the Crane Operator Manual for outline and shipping dimensions. OPERATING CONTROLS Become thoroughly familiar with the location and function of all operating controls provided for the crane and attachment.

  • Page 69: Luffing Jib Rigging Drawing

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Item Description View A View B Boom or Jib Chord Boom or Jib Number Manitowoc Part Number Manitowoc Manufacturing Code Chord Identification (if applicable): H = Heavy L = Light M = Medium...
  • Page 70 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Item Description Boom Section (typical) Boom and Luffing Jib STRAPS STORED Lifting Lug (4)(for shackles of lifting sling hooks) Lifting Lug (4)(for synthetic lifting slings) FIGURE 4-3 Published 06-10-19, Control # 239-12_v1...

  • Page 71: Handling Components

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION HANDLING COMPONENTS Figure 4-3 CAUTION Lacing Damage! Handle the boom and jib sections with care to avoid damaging the lacings and chords. Ensure the boom and jib straps and links are secured in the shipping position on the boom or jib sections during All boom and jib sections have lifting lugs as shown.
  • Page 72 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Item Description #500 Boom Section #501 Jib Section Roller (6) Pin with Safety Pin – SHIPPING (2 places) Pin with Safety Pin – STORED (2 places) FIGURE 4-4 View A View B...

  • Page 73: Shipping Jib Inserts

    AND SHACKLES When securing boom and jib sections, wrap tie-downs over chords — never over lacings. Keep tie-downs as Manitowoc has supplied the lifting slings and shackles close to blocking as possible (View A) to prevent shown in Figure 4-6 on page 4-8 page 4-9.
  • Page 74 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Item Numbers in this Illustration Correspond to Item Numbers in Figure 4-7 PAST AND CURRENT PRODUCTION Item Description Endless Synthetic Rope Sling Working Load Limit: 18 144 kg (40,000 lb) Straight 14 515 kg (32,000 lb) Chocker...
  • Page 75 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION CURRENT PRODUCTION Item Description Endless Synthetic Rope Sling Working Load Limit: 18 144 kg (40,000 lb) Straight 14 515 kg (32,000 lb) Chocker 36 287 kg (80,000 lb) Basket Four Supplied by Manitowoc Item 13.0...
  • Page 76 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL JIB SECTION LIFTING ARRANGEMENTS (legend on next page) Lifting Jib Butt and Transition Insert Assembled FIGURE 4-7 4-10 Published 06-10-19, Control # 239-12_v1...
  • Page 77 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Sling and Shackle Item Numbers Correspond STRUT LIFTING ARRANGEMENTS to Item Numbers in Figure 4-6 Item Description Jib Butt Transition Insert Jib Insert (typical) Jib Top Main Strut Lifting Both Struts in...
  • Page 78 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View C View B View A 1,5 m (5 ft) View D View E Item Description Item Description Jib Connecting Hole Pin with Cotter Pins Blocking Bracket Boom Top Stand Pin with Collar, Retaining Pin, and Cotter Pins...

  • Page 79: Preparing Crane And Boom

    If installed, remove the fixed jib or the upper boom point b. Remove the pin (10, View D). from the boom top. See Section 4 of the MLC300 Crane Operator Manual for details. Rotate the strap bracket (13, View D) down and pin it in the working position (View E) with the pin (14).
  • Page 80 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View B View A View C View D Item Description Boom Top Lower Boom Point Sheave Cluster (1 or 3) Lifting Ring (2) Pin with Cotter Pins (2) Pin with Lug (4)

  • Page 81: Removing Lower Boom Point

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION REMOVING SHEAVE CLUSTERS FROM LOWER BOOM POINT WARNING Figure 4-9 View E, for the following procedure. Crane Tipping Hazard! Remove the rope guard (8). To raise some boom and jib lengths, the complete lower Remove the shaft (9).
  • Page 82 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL WORKING page 4-10 for Larger View of Lifting Arrangement SHIPPING View B View A View C View D View E Item Description Item Description Jib Butt Lifting Lug (4) First Insert Hair-Pin Cotter (2)

  • Page 83: Installing Luffing Jib

    Attach the lifting slings and shackles supplied by Install the jib hinge pins (12, View D) so the Manitowoc to the assist crane hook, and to the jib butt RECTANGULAR END of each pin faces OUT. (1) and the first insert (2) as show in View A.
  • Page 84 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL page 4-11 for Larger View of Lifting Arrangement View A 14° or Greater View B View C View D View F View E Item Description Item Description Lifting Sling (2 or 4): 2,8 m (9 ft) long...

  • Page 85: Install Struts

    (14, View E) from the left side of the jib assembled unit. strut. The ladder weighs 15 kg (33 lb). Attach the Manitowoc supplied slings and shackles to Place the ladder alongside the jib butt for use later. the lifting lugs (4, View B) on the main strut (5).
  • Page 86 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B View C View D Item Description Item Description Main Strut Collar with Retaining Pin and Cotter Pins (4) Jib Strut Keeper Plate (2) Jib Butt Jib Hinge Pin (2)
  • Page 87 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-12 for the following steps. Lift the struts into position over the jib butt (3, View B). Lower the struts so the connecting holes are aligned between the jib strut (2, View C) and the boom top (4).
  • Page 88 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL – SHIPPING – STORED View E View A – STORED – SHIPPING View B View C Item Description Transition Insert – WORKING Shipping/Hold-Down Link (4) Pin (2) Collar with Retaining Pin and Cotter Pins (2)
  • Page 89 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-13 for the following steps. 14. At the transition insert (1, View B), disconnect the shipping/hold-down links (2) by removing the strap pins (3) and the collars (4) from the ends of the spreader (5).
  • Page 90 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A Item Description Wire Rope Guide (2) Rigging Line View B Rigging Winch Luffing Hoist Wire Rope Luffing Hoist (Drum 6) Pad Eye Swivel FIGURE 4-14 4-24 Published 06-10-19, Control # 239-12_v1...

  • Page 91: Prepare For Strut Reeving

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Prepare for Strut Reeving Figure 4-14 for the following steps. The rigging winch can be used to pull the luffing hoist wire rope from the luffing hoist (Drum 6) to the end of the end of the boom top.
  • Page 92 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View C View D View A View B View E See View H See View G page 4-27 page 4-27 Item Description Luffing Hoist Wire Rope Luffing Hoist (Drum 6) Lower Guide Sheave...

  • Page 93: Reeve Luffing Hoist Wire Rope

    Store the shackle and the pin in the parts box. NOTE: Manitowoc reeves the jib strut sheaves and the Pay out the rigging line (15, View H) from the rigging main strut sheaves with a sucker line (12) as winch.

  • Page 94: Connect Main Strut

    Remove the pins (8, View A) and rotate the shipping Attach the Manitowoc supplied lifting slings and links (9) forward to disconnect them from the lugs on the shackles to the lifting lugs (4 and 5, View C) on the main main strut (7).
  • Page 95 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION To use the ladder (18, View G), attach a ladder rung to 12. Remove the retaining pin from both collars (16, View D) the hooks (19) on either side of the jib strut.
  • Page 96 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View B View A STORE STORE View C View F View D STORE View E Item Description Item Description Main Strut Basic Backstay Strap Pin with Hair-Pin Cotters (3) Pin with Hair-Pin Cotters (2)

  • Page 97: Prepare Main Strut

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Prepare Main Strut Figure 4-17 for the following steps. Prepare the main strut (1, View D), as follows: Remove the pin (2, View B) holding the strut raising arm (4) in the shipping position and store the pin (2).
  • Page 98 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B View E View C View D Item Description Strut Raising Arm Tieback Pendant Rigging Winch Guide Sheaves View F Rigging Line Rigging Winch Load Line (Drum 1, 2, or 3)

  • Page 99: Raise Strut Raising Arm

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Raise Strut Raising Arm Figure 4-18 for the following steps. CAUTION Do not attempt to raise the strut raising arm with the load line attached to the strut raising pendant. T h e r a i s i n g a r m w i l l f l i p u p e x t r e m e l y f a s t w i t h considerable force.
  • Page 100 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B Item Description Load Line (Drum 1, 2, or 3) Luffing Hoist Wire Rope Main Strut Hold Down Link/Straps (2) Jib Strut Transition Insert View C Backstay Spreader Basic Backstay Strap (2)

  • Page 101: Raise Main Strut

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Raise Main Strut Figure 4-19 for the following steps. Use extreme care to ensure that the load line spools properly onto the drum during the following steps. Slowly haul in the load line (1, View A) while paying out the luffing hoist wire rope (2) to raise the main strut (3).
  • Page 102 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL SHIPPING – STORED View G View B View A View C View D View E View F Item Description Item Description Luffing Hoist Wire Rope Pin with Safety Pins (2) Main Strut...
  • Page 103 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-20 for the following steps. Haul in the luffing hoist wire rope (1, View A) and pay out the load line to raise the main strut (2) back to vertical. Remove and store pins (12, View G) to disconnect the main strut stops (3) from the main strut.
  • Page 104 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL page 4-10 for Larger View of Lifting Arrangement View B View A View C View D Item Description Assist Crane Lifting Sling (4): 2,8 m (9 ft) long Lifting Lug (4) Jib Insert...

  • Page 105: Install Jib Sections

    Remove the tie-downs and blocking that are securing the jib insert to the trailer. Attach the Manitowoc supplied lifting slings (2) to the hook of the assist crane (1) and to the lifting lugs (3, View A) on the jib insert (4).
  • Page 106 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A2 SHIPPING View B2 WORKING View A1 SHIPPING View B1 WORKING Item Description View C Jib Strap Link Pin with Cotter Pins Bracket Pin with Collar, Retaining Pin, and Cotter Pins...

  • Page 107: Connect Jib Straps Between Jib Sections

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Connect Jib Straps between Jib Sections Figure 4-22 for the following procedure. The jib straps (1) are shipped on the jib sections as shown in View A. Starting at the jib top, proceed as follows: 1.
  • Page 108 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B View C View D Item Description Luffing Hoist Wire Rope Jib Strut Basic Jib Strap (2) Pin with Collar, Retaining Pin, and Cotter Pins Holdback Link (4) Transition Insert...

  • Page 109: Connect Jib Strut To Jib Straps

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Connect Jib Strut to Jib Straps aligned with the holes in the spreader (7) on the transition insert (6). Figure 4-23 for the following procedure. Install the pins (4, View B) to connect the basic jib straps Haul in the luffing hoist wire rope (1, View D) to raise the (3) to the spreader (7).
  • Page 110 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A STORED View B WORKING Item Description Position Light and Wind Speed Indicator Assembly Safety Pin (2) Bracket Tube Electric Cable (WJT1-P8 Position Light) Electric Cable (WJT1-P4 Wind speed) View C...

  • Page 111: Install Position Light And Wind Speed Indicator

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Install Position Light and Wind Speed Indicator Figure 4-25 for the following procedure. If stored in the boom top, unpin the position light and wind speed indicator assembly (1, View A) from the storage lugs in the boom top.
  • Page 112 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Camera Camera Shaft Bracket Hair-Pin Cotter Electric Cable (WJT3) Eyebolt Bracket View D Jib Top Electric Cable (WJR3) Cable Reel Electric Cable (WJB3) Bracket...

  • Page 113: Install Jib Top Camera And Connect Electric Cables

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Install Jib Top Camera and Connect Electric Cables Figure 4-26 for the following procedure. Remove the camera (1, View C) from storage in the job box or from the boom top. Slide the camera shaft (2, View C) into the bracket (3) and install the hair-pin cotter (4).
  • Page 114 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View B View A View C View C Boom Top Jib Top Item Description Item Description Electric Cable WN100000 -P2 Receptacle WJT1-J1 Cable Reel Strain Relief (2) Electric Cable WJR1-P2 J-Bolt Cable Reel...

  • Page 115: Connect Jib Top Electric Cables

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Connect Jib Top Electric Cables Disconnect and uncoil the electric cables (11 and 12, View A) from the storage brackets on the jib butt. Figure 4-27 for the following procedure. Connect the top end of the electric cable (11, View A) to Payout the electric cables (1 and 3, View A) from the the electric cable from cable reel (2).
  • Page 116 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View B View A VIEW FROM For 6, 8, and 10 For 2, 4, 6, and 8 FRONT Parts of Line Parts of Line View D View C FIGURE 4-28 4-50 Published 06-10-19, Control # 239-12_v1...

  • Page 117: Install Lower Jib Point Sheave Clusters

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Legend for Figure 4-28 Disconnect the lifting slings. Item Description Figure 4-28, View B for the remaining steps. Upper Jib Point Disconnect the shorting plug (7) from the receptacle (8) Jib Top on the jib top.
  • Page 118 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A LEFT SIDE VIEW View F All Views Typical Two Places Item Description Intermediate Suspension Pendant (2) 12 m (39.4 ft) Intermediate Suspension Insert Pendant Button (7 each pendant) Socket Locking with Hair-Pin Cotter (2) Socket (2).

  • Page 119: Prepare Intermediate Suspension Pendants

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Prepare Intermediate Suspension Pendants Remove the socket locking pins (4, View B) and raise the sockets (5) from the shipping position to the rigging Figure 4-29 for the following steps. position (View C).

  • Page 120: Pre-Raising Checks

    SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Make sure the latches and the lock are locked Do not lubricate parts. Make sure all parts are clean. before raising the boom and luffing jib. With power on, the sensor LED’s (6) should be ON when the lock is locked.

  • Page 121: Raising Boom And Luffing Jib

    Monitor the angle in the main display as the boom and jib Luffing Jib Capacity chart in the RCL/RCI display. are raised (see MLC300 Main Display Operation Manual). Operating the luffing jib with any other type of chart The crane must remain in line with the crawlers when selected is prohibited.
  • Page 122 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL LJ4-15a View A LJ4-15b View B LJ4-15c View D LJ4-15f LJ4-15e View E View F FIGURE 4-32 The circled numbers in Figure 4-32 correspond to the Pay out the load lines so they do not become taut as the numbered steps in the following procedure.
  • Page 123 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION NOTE: The dead-end link, pins, swivel, and button socket are stored in the parts box supplied with the MLC300. WARNING Tipping Hazard! Do not allow the jib straps to become too tight during the WARNING raising steps.
  • Page 124 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL STORED STORED Behind Far Side Far Side 1-Part Line 2-Part Line Item Description Position Indicator Light Wind Speed Indicator Limit Switch (lower and upper jib point) Chain Weight with 2-Chain Attachments See Load Block Reeving Diagrams for Suggested...

  • Page 125: Lowering Boom And Luffing Jib

    The crane will tip or structural damage will result if the specified angle is not adhered to. Monitor the angle in the main display as the boom and jib are lowered (see MLC300 Main Display Operation Manual). Do not allow the BOOM-TO-LUFFING JIB ANGLE to become less than 70°.
  • Page 126 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL LJ4-15c LJ4-15e View B LJ4-15f View A View C LJ4-15a View F View D FIGURE 4-34 View E The circled numbers in Figure 4-34 correspond to the and/or jib points is permitted.
  • Page 127 Store the dead-end link, pins, swivel, and button jib sections and hang up in the strap supports. socket in the parts box supplied with the MLC300. It will be necessary to use the limit bypass switch to luff Securely fasten the load lines to the jib point so the down if the BLOCK UP limit is on.
  • Page 128 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B Item Description Synthetic Tie-Down Wrapped Over Boom Chord Chain Tie-Down Wrapped Over Boom Chord Protective Covering (section of rubber tire) FIGURE 4-35 Item Description Upper Jib Point Jib Top...

  • Page 129: Shipping Crane Components

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION SHIPPING CRANE COMPONENTS Connect the shorting plug (7) to the receptacle (8) on the jib top. It is the owner/user’s responsibility to ensure the following: Attach the lifting slings (4) from the assist crane to the •...

  • Page 130: Lower Jib Strut

    SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Item Description Luffing Hoist Wire Rope Jib Strut Spreader Jib Strap Transition Insert FIGURE 4-37 Lower Jib Strut Disconnect Jib Strut from Jib Straps Figure 4-37 for the following procedure. Figure 4-38 for the following procedure.
  • Page 131 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION View A View B View C View D Item Description Main Strut Jib Strut Basic Jib Strap (2) Pin with Collar, Retaining Pin, and Cotter Pins Holdback Link (4) Transition Insert Spreader...
  • Page 132 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A2 SHIPPING View B2 WORKING View A1 SHIPPING View B1 WORKING Item Description View C Jib Strap Link Pin with Cotter Pins Bracket Pin with Collar, Retaining Pin, and Cotter Pins...

  • Page 133: Disconnect Jib Straps Between Jib Sections

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Disconnect Jib Straps between Jib Sections Figure 4-39 for the following procedure. The jib straps (1) are shipped on the jib sections as shown in View A1 or A2. Starting at the transition insert, proceed as follows: Remove pin (5, View B1 or B2).
  • Page 134 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL SHIPPING – STORED View G View B View A View C View D View E View F Item Description Item Description Luffing Hoist Wire Rope Pin with Safety Pins (2) Main Strut...

  • Page 135: Store Main Strut Stops

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Store Main Strut Stops Figure 4-40 for the following steps. Remove pin (12), View B) to disconnect the strut raising pendant (10) from the bracket (11) on the left side of the main strut (2).
  • Page 136 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A View B Item Description Load Line (Drum 1, 2, or 3) Luffing Hoist Wire Rope Main Strut Hold Down Link/Straps (2) Jib Strut Transition Insert Backstay Spreader View C Basic Backstay Strap (2)

  • Page 137: Store Backstay Straps And Lower Main Strut

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Store Backstay Straps and Lower Main Strut Figure 4-41 for the following steps. Slowly haul in the load line while paying out the luffing hoist wire rope (View B) to lower the main strut until the backstay straps and links (10, View C) are resting in the brackets on the boom top.
  • Page 138 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View A Item Description Strut Raising Arm Tieback Pendant Rigging Winch Guide Sheaves Rigging Line Rigging Winch Load Line (Drum 1, 2, or 3) Strut Raising Pendant Wire Rope Guide (2) View B...

  • Page 139: Lower Strut Raising Arm

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Lower Strut Raising Arm Figure 4-42 for the following steps. CAUTION Do not attempt to lower the strut raising arm with the load line attached to the strut raising pendant. The raising arm will flip down extremely fast with considerable force.
  • Page 140 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View B View A STORE STORE View C View D STORE Item Description View E Main Strut Pin with Hair-Pin Cotters (3) Spreader Strut Raising Arm Pin with Hair-Pin Cotters (2) Basic Backstay Strap...

  • Page 141: Prepare Main Strut For Removal

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Prepare Main Strut for Removal Figure 4-43 for the following steps. Prepare the main strut (1, View D), as follows: Pin the strut raising arm (4, View B) in the shipping position.

  • Page 142: Disconnect Main Strut From Boom Top

    Figure 4-44 for the following steps. Attach the Manitowoc supplied lifting slings and The ladder (18, View G) can be used to gain access to shackles to the lifting lugs (4 and 5, View C) on the main the strut supports. See...
  • Page 143 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Hoist with the assist crane just enough to loosen pins 10. Lower the main strut rearward into the shipping brackets (15, View D). (View A). Remove the retaining pin from both collars (16, View D) 11.
  • Page 144 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL View C View A View B View D See View G See View F page 4-27 page 4-27 Item Description Luffing Hoist Wire Rope Luffing Hoist (Drum 6) Lower Guide Sheave View E...

  • Page 145: Reeve Sucker Line In Place Of Luffing Hoist Wire Rope

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Reeve Sucker Line in Place of Luffing Hoist SLOWLY haul in the luffing hoist wire rope (1) until the button on the end of the luffing hoist wire rope is at the Wire Rope shipping lug in the main strut (View F).
  • Page 146 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL – SHIPPING – STORED View E View A – STORED – SHIPPING View B View C Figure 4-7 on page 4-11 Larger View of Lifting Arrangement Item Description Transition Insert – WORKING...

  • Page 147: Remove Struts

    4-11. Referring to Figure 4-7 on page 4-11, attach the Manitowoc supplied slings and shackles to the lifting lugs (L1 and L2) on the main strut (5). • PAST production: use items 7, 8, and 9 for rear legs. •...
  • Page 148 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Figure 4-7 on page 4-11 Larger View of Lifting Arrangement View A View B View C Item Description Item Description Main Strut Jib Strut Hinge Pin (2) Jib Strut Collar with Retaining Pin and Cotter Pins (4)
  • Page 149 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-47 for the following steps. 10. Hoist with the assist crane so that all four lifting slings are equally tight. 11. Remove the inboard collar (6, View C) from both jib strut hinge pins (5).
  • Page 150 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Figure 4-7 on page 4-11 Larger View of Lifting Arrangement View A 14° or Greater View B View C View D View F View E Item Description Item Description Lifting Sling (2 or 4): 2,8 m (9 ft) long...

  • Page 151: Prepare Struts For Shipping

    (13). Place the struts on blocking at ground level along either If removed, attach the Manitowoc supplied slings and side of the jib butt and proceed as follows: shackles to the lifting lugs (4, View B) on the main strut (5).
  • Page 152 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Figure 4-7 on page 4-10 WORKING for Larger View of Lifting Arrangement SHIPPING View B View A View C View D View E Item Description Item Description Jib Butt Hair-Pin Cotter (2)

  • Page 153: Remove Jib Butt And First Insert

    The jib butt (1), the first insert (2), and the jib stops (3) are shipped as an assembled unit. Attach the Manitowoc supplied lifting slings and shackles to the assist crane hook and to the jib butt (1) and the first insert (2) as show in View A.
  • Page 154 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4-88 Published 06-10-19, Control # 239-12_v1...

  • Page 155: Wire Rope Installation

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION WIRE ROPE INSTALLATION Seizings NOTE: The wire rope manufacturer’s recommendations Wire Rope Type Required takes precedence over the following information. Preformed Non-preformed Wire Rope Specifications See the Wire Rope Specifications Chart in the Capacity...

  • Page 156: Anchoring Wire Rope To Drum

    SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Don’t Allow End of Wire Rope to Extend Out of Socket Opening Item Description Wire Rope Pocket in Drum Barrel Straight Wedge Seizing FIGURE 4-51 Anchoring Wire Rope to Drum Item Description...
  • Page 157 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION d. Avoid dragging the wire rope in the dirt or around objects that can scrape, nick, cut, or crush the wire rope. Carefully inspect the drums and all rope guides, rollers, and sheaves for defects that can cause the wire rope to wear or be cut.
  • Page 158 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL T (Rope Clip Nut Torque) Wire Rope/Clip Size Item Description inch 1-1/8 1-1/4 Seizing (mm) (22,23) (25,4) (28,58) (31,75) Dead End Torque Live End in Straight Line with Socket * ft/lb Socket...

  • Page 159: Anchoring Wire Rope To Wedge Socket

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Anchoring Wire Rope to Wedge Socket WARNING WARNING Falling Load Hazard! Falling Load Hazard! The wire rope can break if the following precaution is not observed: • Inspect all parts prior to use. Do not use parts that are cracked or otherwise defective.
  • Page 160 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Item Description Rigging Line Connector Wire Rope with Button Pad Eye No. 1.5 Pad Eye Item Inch Wire Rope without Button Approximate Capacity 1,220 lb (553 kg) 16,00 Shackle 6,35 Rigging Line...

  • Page 161: Pad Eye Usage For Wire Rope Reeving

    Figure 4-56 for the following procedure. Some rotation-resistant wire rope supplied by Manitowoc is equipped with a pad eye welded to the leading end of the wire rope or to the button on the end of the wire rope.

  • Page 162: Rigging Winch Operation

    TO TURN RIGGING WINCH OFF — Scroll to the rigging winch selection screen (4) in the TO TURN RIGGING WINCH ON — main display. See MLC300 Main Display Operation Scroll to the rigging winch selection screen (4) in the Manual for instructions.

  • Page 163: Operating Rigging Winch

    MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Use either the jog dial on the right console or the scroll keys on the main display to highlight the OFF (O) icon CAUTION! (6) in the selection box. Avoid Rigging Winch or Wire Rope Damage! Press the select button on the jog dial or on the main display to select the highlighted mode.
  • Page 164 SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL Align sheaves in jib strut with sheaves in the boom top wire rope guide. Item Description Drum 1 Drum 2 Drum 3 Wire Rope Guide on 12 m (39.4 ft) Insert Wire Rope Guide in 12 m (39.4 ft) Insert...
  • Page 165 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Align sheaves in jib strut with sheaves in the boom top wire rope guide. With VPC-MAX Attachment FIGURE 4-58 continued Manitowoc 4-99 Published 06-10-19, Control # 239-12_v1...

  • Page 166: Load Line Reeving

    SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL LOAD LINE REEVING Duplex Hook Attach the load so it is balanced equally on the hook. The lifting slings must be within the angles given in Figure 4-59 WARNING achieve maximum hook capacity. The duplex hook has a...
  • Page 167 MLC300 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Upper Jib Point Multiple Parts of Line Upper Jib Point Single Part of Line Lower Jib Point Item Description Upper Jib Point Dead-End Link Link Swivel Button Socket – 28 mm or 32 mm...

  • Page 168: Load Block Tieback

    SET-UP AND INSTALLATION MLC300 LUFFING JIB OPERATOR MANUAL LOAD BLOCK TIEBACK General Tieback hole (1, Figure 4-61) is provided on the front of the rotating bed for tying back the load block when not in use. Specifications Sling Length The sling must be long enough to connect it to the shackles in the tieback hole and to the hook of the freely suspended load block.

  • Page 169: Section 5

    Lube and Coolant Product Guide ........... . . 5-1 Manitowoc...
  • Page 170 MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 5-ii Published 06-10-19, Control # 239-12...

  • Page 171: Lube And Coolant Product Guide

    MLC300 LUFFING JIB OPERATOR MANUAL LUBRICATION SECTION 5 LUBRICATION LUBRICATION LUBE AND COOLANT PRODUCT GUIDE See F2280 at the end of this section. See the publication at the end of this section. Manitowoc Published 06-10-19, Control # 239-12...
  • Page 172 LUBRICATION MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK Published 06-10-19, Control # 239-12...
  • Page 173 Adjustment..............6-15 Manitowoc...
  • Page 174 MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 6-ii Published 06-10-19, Control # 239-12...

  • Page 175: General Maintenance

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE SECTION 6 MAINTENANCE GENERAL MAINTENANCE This section contains maintenance and adjustment instructions for the limit devices used with the luffing jib WARNING attachment. Falling Attachment Hazard F o r m a i n t e n a n c e a n d i n s p e c t i o n o f t h e f o l l o w i n g...
  • Page 176 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL View A SWITCH OPENED View B SWITCH CLOSED View D Limit Switch Wiring View C Right Side of Boom Butt Switch Receptacle Function Digital Level Terminals Maximum Boom Angle Angle (16) Black Ground 85° Boom only with or...

  • Page 177: Adjusting Automatic Boom Stop

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE Adjusting Automatic Boom Stop b. Turn the adjusting rod (2a or 2b) all the way into the coupling (4). Figure 6-3 for the following procedure. Boom up slowly until the boom reaches the The limit switch for the automatic boom stop was set at the specified angle.
  • Page 178 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL Item Description Jib Max Angle Limit Switch Adjusting Rod: 85 mm (3-11/32 in) long Actuator Plate Jam Nut Jib Stop 338 mm (13-5/16 in) Jib Min Angle Limit Switch Boom Butt Plate Actuator Rod...

  • Page 179: Automatic Luffing Jib Stop Adjustment

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE AUTOMATIC LUFFING JIB STOP • This limit cannot be bypassed. ADJUSTMENT Luffing Jib Stop Maintenance At least once weekly and each time the attachment is erected, check that the luffing jib stops stop the luffing jib at the specified angles.

  • Page 180: Luffing Jib Stop Operational Checks

    MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL Luffing Jib Stop Operational Checks 14. The fault alarm must come on indicating that the Luffing Jib Maximum Down 1 limit has been reached. Make the following operational checks after the boom and jib 15.
  • Page 181 MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE Item Description Limit Switch Wiring Actuator Rod Switch Adjusting Rod Receptacle Function Terminals Jam Nut Black Ground Spring Pin Green Maximum Angle Spring Washer White 24 VDC Supply Spring Blue Jumper Spring Washer Limit Switch...
  • Page 182 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL View B View D Jib Stop Latches LOCKED Closed Jib Stop Latches UNLOCKED and Free to Rotate Jib Butt 20° Above Horizontal View A View C Jib Stops Resting on Top Jib Stops Above Jib...

  • Page 183: Physical Jib Stop Operation

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE PHYSICAL JIB STOP OPERATION The jib stops will now operate as follows: When the boom-to-luffing jib angle is 149° (View E), Both physical jib stops have a latch and lock mechanism the ends of the jib stops engage the jib stop lugs on...
  • Page 184 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL Item Description Physical Luffing Jib Stop Proximity Sensor Jam Nut Wear Pad Jib Stop Latch, Spring Loaded (2) Cover Jib Stop Lock Sensor LED’s (yellow lights) 7,5 mm (19/64 in) TYPICAL 2 PLACES View A...

  • Page 185: Physical Jib Stop Sensor Adjustment

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE PHYSICAL JIB STOP SENSOR • You try to boom down or you try to luff up when either latch is UNLOCKED (proximity sensor ADJUSTMENT electrically closed) and the boom angle is less than 30°. This limit can bypassed.
  • Page 186 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL STORED STORED Behind Far Side Far Side 1-Part Line 2-Part Line Item Description Position Indicator Light Wind Speed Indicator Limit Switch (lower and upper jib point) Chain Weight with 2-Chain Attachments Lift Plate Hook-and-Weight Ball...

  • Page 187: Block-Up Limit Installation And Adjustment

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE BLOCK-UP LIMIT INSTALLATION AND The luffing jib block-up limit system consists of the following components (Figure 6-8): ADJUSTMENT A normally closed limit switch assembly (3) fastened at either or both of the following locations:...
  • Page 188 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL 24.6 mm (31/32 in) Dimension A 22.6 mm 26 mm (1-1/32in) (7/8 in) Typical for Upper and Lower Jib Points Limit Switch Wiring Item Description Switch Receptacle Function Bracket Terminals Cover Black Ground Limit Switch...

  • Page 189: Maintenance

    MLC300 LUFFING JIB OPERATOR MANUAL MAINTENANCE Maintenance against the weight. When the chain goes slack, the corresponding load drum should stop hoisting and the boom/luffing hoist should not operate in the down direction. CAUTION Prevent Damage CAUTION To prevent two-blocking from occurring, do not operate...
  • Page 190 MAINTENANCE MLC300 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 6-16 Published 06-10-19, Control # 239-12...
  • Page 191 Manitowoc Supplied Lifting Slings and Shackles ........
  • Page 192 MLC300 LUFFING JIB OPERATOR MANUAL Operational Aids ..............2-15 Operator Manual/Capacity Chart Storage .

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