Manitowoc MLC650 Operator's Manual
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Manitowoc MLC650 Operator's Manual

Luffing jib attachment
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Manitowoc MLC650
Operator Manual
Luffing Jib Attachment

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  • Page 1 Manitowoc MLC650 Operator Manual Luffing Jib Attachment...
  • Page 3 The serial number of the crane and applicable attachments (for example, a luffing jib or VPC-MAX ) is the only method a Manitowoc dealer or the Manitowoc Crane Care Lattice Team has of providing the correct parts and service information.
  • Page 4 THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH...

  • Page 5: Table Of Contents

    Manitowoc Dealer ........
  • Page 6 Manitowoc Supplied Lifting Slings and Shackles........
  • Page 7 MLC650 LUFFING JIB OPERATOR MANUAL TABLE OF CONTENTS Removing the Lower Boom Point from the Boom Top ....... . . 4-13 Installing the Lower Boom/Jib Point in the Luffing Jib Top .
  • Page 8 TABLE OF CONTENTS MLC650 LUFFING JIB OPERATOR MANUAL Unreeving the Strut Tops ........... . . 4-115 Lowering the Strut Raising Arm .
  • Page 9 MLC650 LUFFING JIB OPERATOR MANUAL TABLE OF CONTENTS Replacing Jib Stop Max Down Actuator Rod ........6-21 Drum 6 Pawl Limit Switch .
  • Page 10 TABLE OF CONTENTS MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK TOC-6 Published 09-06-19, Control # 230-08...
  • Page 11 Manitowoc Dealer........
  • Page 12 MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 1-ii Published 09-06-19, Control # 230-08...

  • Page 13: Crane Data

    See the end of this section for outline dimensions. OPERATOR CAB CHANGE OF OWNERSHIP REGISTRATION FRONT If you are the new owner of a Manitowoc crane, please register it with Manitowoc Crane Care so we can contact you if the need arises. Go to www.manitowoccranes.com...

  • Page 14: Identification And Location Of Components

    IDENTIFICATION AND LOCATION OF COMPONENTS NOTE See MLC650 Crane Operator Manual for i d e n t i f i c a t i o n o f c r a n e a n d b o o m components.
  • Page 15 MLC650 LUFFING JIB OPERATOR MANUAL INTRODUCTION With Optional VPC-MAX Attachment FIGURE 1-3 continued Manitowoc Published 09-06-19, Control # 230-08...

  • Page 16: Vpc And Vpc-Max

    INTRODUCTION MLC650 LUFFING JIB OPERATOR MANUAL VPC AND VPC-MAX Inverse Conversion VPC™ and VPC-MAX™ are registered trademarks. DIVIDE (÷) known value by conversion factor to obtain equivalent value in desired units. For example, 3,6576 m is ENGLISH AND METRIC CONVERSIONS converted to feet as follows: 3,6576 m ÷...
  • Page 17 MLC650 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 18 INTRODUCTION MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK Published 09-06-19, Control # 230-08...

  • Page 19: Section 2

    Personnel Handling Policy ............2-24 Manitowoc...
  • Page 20 MLC650 LUFFING JIB OPERATOR MANUAL Pedestal/Barge Mounted Cranes ........... 2-25 Pedestal Mounted Crane .

  • Page 21: Continuous Innovation

    Due to continuing product innovation, the information in this moderate injury. manual is subject to change without notice. If you are in doubt about any procedure, contact your Manitowoc dealer or the Manitowoc Crane Care Lattice Team. CAUTION Without the safety alert symbol, identifies potential NAMEPLATES AND DECALS hazards that could result in property damage.
  • Page 22 SAFETY INFORMATION MLC650 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 23: Safety And Information Signs

    MLC650 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 24 SAFETY INFORMATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Operator’s Cab Platform with Handrails Carbody Platform (both ends and sides) Ladder (both crawlers) Left Front Ladders (2) Rotating Bed Platform with Handrails (both side) Engine Enclosure (non-skid) Rear Folding Ladder (both sides)
  • Page 25 MLC650 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION Figure 2-1 continued Manitowoc Published 09-06-19, Control # 230-08...

  • Page 26: Crane Access Points

    When personnel use ladders to get on or off the crane, their hands shall be free of any objects. Objects which cannot be Manitowoc has provided ladders and platforms at the carried in pockets or tool belts must be lifted into place with a...

  • Page 27: Personal Fall-Protection

    MLC650 LUFFING JIB OPERATOR MANUAL SAFETY INFORMATION PERSONAL FALL-PROTECTION Manitowoc has provided lifelines and anchors throughout the Item Description crane and attachment (see Figure 2-2.) to which workers can Lifeline attach their personal fall-protection equipment. Anchor WARNING Fall Hazard! To prevent falling from any height during crane assembly and disassembly, personnel shall wear fall-protection equipment.

  • Page 28: Operator Manual/Capacity Chart Storage

    If the serial numbers of your manuals and capacity charts do not match the serial numbers of the crane or attachment, STORAGE contact your Manitowoc dealer for the proper manual or capacity charts. General Do not operate crane or attachment if proper Capacity Manitowoc provides the following manuals and other Chart is not in cab.

  • Page 29: Safe Operating Practices

    (United States Federal Law), in ASME B30.5 American operation. Manitowoc cannot foresee all hazards that will National Standard, or in any other applicable federal, state, arise in the field; therefore, safety remains responsibility or local laws.
  • Page 30 SAFETY INFORMATION MLC650 LUFFING JIB OPERATOR MANUAL 4. The operator shall be thoroughly familiar with operation 10. The operator shall verify that the Capacity Chart being of the crane and its proper care. If adjustments or repairs used is the correct one for the cranes configuration are necessary or if there are known defects that impair (boom length, load line reeving, counterweight, etc.).

  • Page 31: Handling Load

    Do not operate the crane with a snow or ice covered NOTE Capacity charts for Manitowoc cranes show the boom. The extra weight may cause overload, tipping, or total weight of freely suspended loads for various structural damage.

  • Page 32: Lifting/Moving Load

    SAFETY INFORMATION MLC650 LUFFING JIB OPERATOR MANUAL 2. Only use slings and other rigging that are in safe All personnel are clear of the swing radius of the operating condition and have a rating equal to or greater crane’s counterweight.

  • Page 33: 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 performed: 3.

  • Page 34: Signals

    If communication is disrupted, load indicator(s). operator shall stop all crane movements. 6. Manitowoc recommends that each load line be equipped 2. Signals to the operator shall be in accordance with the with an anti-two-block device. standard...

  • Page 35: Safety Devices

    • Alternative measures are not permitted to be used for a faulty safety device. Manitowoc provides the following operational aids on its • Always tag-out any faulty safety device and place a cranes, either as standard equipment or optional equipment.

  • Page 36: Category 2 Operational Aids

    SAFETY INFORMATION MLC650 LUFFING JIB OPERATOR MANUAL at a point that gives the signal person sufficient time Refer to the pendulum boom angle indicator on the to signal the operator and have the operator stop boom butt (visible from operator’s cab) the boom or jib within the minimum allowable radius b.

  • Page 37: 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, 1. During crane use, assume that every line is energized Table A clearances when the power lines are energized.

  • Page 38: Electrocution Hazard Devices

    SAFETY INFORMATION MLC650 LUFFING JIB OPERATOR MANUAL source. This person should have no other duties while etc.). The insulating characteristics of these devices can the crane is working. be compromised if not kept clean, free of contamination, and undamaged. 6. Taglines should always be made of non-conductive materials.

  • Page 39: Refueling

    To ensure safe and proper operation of Manitowoc cranes, they must be maintained according to the instructions 2. The engine must be stopped before refueling the crane.
  • Page 40 SAFETY INFORMATION MLC650 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 the crane is being serviced and battery maintenance or short across battery terminals to the engine must not be started.

  • Page 41: 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 42 SAFETY INFORMATION MLC650 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 and Handling Slings WRONG –...

  • Page 43: Boom Disassembly Safety

    MLC650 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 44: 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 45: Pedestal/Barge Mounted Cranes

    Manitowoc recommends that cranes be properly maintained, regularly inspected, and repaired as necessary. All safety WARNING signs must be in place and legible. We also urge Manitowoc The crane owner/user shall verify that the method used to crane owners to upgrade their cranes with rated capacity fasten or restrain the crane to the foundation, the barge, indicator/limiter systems for all lifting operations.

  • Page 46: Pedestal Mounted Crane

    M a n i t o w o c d e a l e r f o r t h e NOTE Manitowoc does not permit traveling on a barge recommended bolt pattern and for the type and deck with load.

  • Page 47: Capacity Charts For Barge Mounted Crane

    If the crane’s 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 the crane must be inspected to mounted on a barge or other supporting structure under detect cracks and other damage.

  • Page 48: Barge Mount Definitions

    1. 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 49: Section 3

    Wind Conditions ..............3-17 Manitowoc...
  • Page 50 MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 3-ii Published 09-06-19, Control # 230-08...
  • Page 51 MLC650 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES SECTION 3 OPERATING CONTROLS AND PROCEDURES THIS SECTION STARTS ON THE NEXT PAGE Manitowoc Published 09-06-19, Control # 230-08...

  • Page 52: Standard Hand Signals For Crane Operation

    OPERATING CONTROLS AND PROCEDURES MLC650 LUFFING JIB OPERATOR MANUAL STANDARD HAND SIGNALS FOR CRANE OPERATION The following standard hand signals comply with ASME B30.5-2014. Table 3-1 Standard Hand Signals for Crane Operation M100118 M100119 M100120 M100121 M100122 M100123 M100124 M100125...
  • Page 53 MLC650 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 54: General Operation

    GENERAL OPERATION The instructions in this section supplement the operating WARNING control instructions in Section 3 of the MLC650 Crane Prevent death or serious injury to personnel! Operator Manual. This section has two purposes: The luffing jib attachment must be installed and operated •...

  • Page 55: Luffing Jib Operating Controls

    Read and become thoroughly familiar with the MLC650 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’s cab.

  • Page 56: Limit Bypass Switch

    OPERATING CONTROLS AND PROCEDURES MLC650 LUFFING JIB OPERATOR MANUAL 8 – Mechanical Crane Level The Main Display Working Screen also shows the operating limits and system faults that may occur during operation. The bubble level (Figure 3-4) indicates crane levelness from 3 –...

  • Page 57: Operating Limits Identification And Operation

    3-13. Cranes meeting European requirements (CE) are equipped with an RCI/RCL External Override Switch located outside the operator’s cab. See MLC650 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 58 OPERATING CONTROLS AND PROCEDURES MLC650 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 59 MLC650 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES Operating Limit Icon Function Parked This limit prevents the selected crane function from being operated until the park switch is turned off (un- parked). M102772 Gantry Down With the Setup Mode ON, this limit stops the mast if the gantry is down during the following operations: •...
  • Page 60 OPERATING CONTROLS AND PROCEDURES MLC650 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 171.5°. • 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 61 MLC650 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES Operating Limit Icon Mast (fixed) Stop This limit stops boom hoist operation if the mast stop cylinders retract for any reason. The cylinders must be extended at all times. M103770 Operator Out of Seat This limit prevents the crane functions from being operated when the operator is out of the seat.
  • Page 62 OPERATING CONTROLS AND PROCEDURES MLC650 LUFFING JIB OPERATOR MANUAL Operating Limit Icon VPC Setup Prohibited NOTE The VPC setup mode must be OFF anytime the boom is supported and operated within the capacity chart. When the boom angle is within the capacity chart, this limit stops the boom from being raised until the VPC M102796 setup mode is turned off.

  • Page 63: Luffing Jib Mode Selection

    T h e r e a r e t h r e e l u ff i n g j i b m o d e s c r e e n s ( Vi e w A , Figure 3-5). Refer to the MLC650 Main Display Operation Manual.

  • Page 64: Resetting Luffing Jib Limits

    OPERATING CONTROLS AND PROCEDURES MLC650 LUFFING JIB OPERATOR MANUAL 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 65: Drum And Control Handle Identification

    MLC650 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES DRUM AND CONTROL HANDLE IDENTIFICATION Drum Description Main Hoist Main Hoist (optional) Whip Hoist Boom Hoist (standard) Mast Hoist (VPC-MAX) Boom Hoist (VPC-MAX) Luffing Hoist Rigging Winch NOTE: Drum numbers will change to match selected configuration.

  • Page 66: Operating Precautions

    OPERATING CONTROLS AND PROCEDURES MLC650 LUFFING JIB OPERATOR MANUAL OPERATING PRECAUTIONS • The Travel on Grade Prohibited icon will appear in the Information Bar of the Read and comply with the instructions in the Liftcrane RCL/RCI display if the VPC is locked...

  • Page 67: Leaving Crane Unattended

    MLC650 LUFFING JIB OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES WIND CONDITIONS Wind adversely affects lifting capacity and stability. The result could be loss of control over the load and crane, even WARNING if the load is within the crane’s capacity.
  • Page 68 OPERATING CONTROLS AND PROCEDURES MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 3-18 Published 09-06-19, Control # 230-08...
  • Page 69 Manitowoc Supplied Lifting Slings and Shackles ........
  • Page 70 MLC650 LUFFING JIB OPERATOR MANUAL Routing the Load Lines to the End of the Luffing Jib ....... . . 4-65 Preparing the Intermediate Suspension Pendants .

  • Page 71: General Setup And Installation

    The instructions in this section assume that the crane, the cannot be reached from the ground or from Manitowoc VPC-MAX attachment (if equipped), and the required length provided, ladders, catwalks and platforms.

  • Page 72: Personal Fall-Protection

    See Crane Weights in Section 1 of this manual for the Item Description weights of the individual boom and jib components. Lifeline See the MLC650 Product Guide in Section 1 of the Crane Anchor 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 73: Luffing Jib Rigging Drawing

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Item Description Boom or Jib Chord Boom or Jib Number VIEW A Manitowoc Part Number VIEW B Manitowoc Manufacturing Code Chord Identification: H = Heavy XH = Extra Heavy M = Medium...
  • Page 74 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Boom Section (typical) Boom Links (stored) Lifting Lug (4) (for shackles of sling hooks) Lifting Lug (4) (synthetic sling posts) Boom Straps and Luffing Jib Backstays (stored) FIGURE 4-3 Published 09-06-19, Control # 230-08...

  • Page 75: Handling Components

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION HANDLING COMPONENTS • Lift against the chords only, never against the lacings. • Use synthetic slings. If wire rope or chain slings are Figure 4-3 for the following: used, install protective covering (such as sections of Handle the boom and jib sections with care to avoid rubber tire) between the slings and the chords.
  • Page 76 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Lower Connector Pin and Safety Pin (shipping) (2 places) Lower Connector Pin and Safety Pin (stored) (2 places) Roller (6) #680 Boom Section #682 Boom Section FIGURE 4-4 Published 09-06-19, Control # 230-08...

  • Page 77: Shipping Crane Components

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION SHIPPING JIB INSERTS • To avoid damage to components: Use nylon tie-downs to secure components as shown in The jib inserts can be shipped inside the boom sections as Figure 4-5, View A.
  • Page 78 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Sling # Part # m (ft) mm (in) kg (lb) kg (lb) kg (lb) kg (lb) kg (lb) kg (lb) SL 1 (2) 3,30 70,00 45 360 39 281 32 069 22 680...

  • Page 79: Manitowoc Supplied Lifting Slings And Shackles

    Thoroughly clean all pins and connecting holes. AND SHACKLES • Apply a light coat of grease to all pins, contacting surfaces, and connecting holes. Manitowoc has supplied the lifting slings and shackles shown in Figure 4-6. CONNECTING/DISCONNECTING ELECTRIC The lifting slings and shackles are stored in the parts boxes...
  • Page 80 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C View D View E Item Description Item Description Jib Butt Connecting Hole Pin and Hair Pin Cotter (qty 2) Blocking under the Boom Top Pin Storage Bracket (qty 4) Distance—1,7 m (5.6 ft)

  • Page 81: Preparing The Crane For Luffing Jib

    If installed, remove the fixed jib or the upper boom point the pin and hair pin cotter (14, View E). from the boom top. See Section 4 of the MLC650 Crane d. Rotate the links (12, View D) rearward from the Operator Manual for details.
  • Page 82 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A Item Description 2 675 kg (5,897 lb) Jib Top Lower Boom/Jib Point (8 sheave) Lifting Lug (qty 2) Pin with Safety Pin (qty 2) Pin with Safety Pin (qty 6)

  • Page 83: Removing The Lower Boom Point From The Boom Top

    SET-UP AND INSTALLATION Removing the Lower Boom Point from the Boom Top WARNING Refer to Section 4 of the MLC650 Crane Operator Manual for lower boom point removal and installation instructions. Crane Tipping Hazard! Installing the Lower Boom/Jib Point in the...
  • Page 84 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View C Item Description Ladder Hitch Pin (qty 2) Hair Pin Cotter (qty 2) Upper Banding Lacing Pin (qty 2) Hair Pin Cotter (qty 2) Platform Brace (qty 2)

  • Page 85: Installing The Luffing Jib

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION INSTALLING THE LUFFING JIB Using an assist crane, lift the struts off the trailer and remove the trailer from the area. Installing The Jib Strut Butt NOTE: The struts will hang at an approximate angle of 4°.
  • Page 86 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View C View B WORKING POSITION SHIPPING POSITION View D Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) Butt End Lifting Lug (qty 2) Middle Lifting Lug (qty 2)

  • Page 87: Installing The Main Strut Butt

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing The Main Strut Butt to the working position (View C). Repeat this step for the other side. Figure 4-11 for the following procedure. Lift the main strut slightly with the assist crane and Hoist down to allow slack in the SL 4 slings (1, View A).
  • Page 88 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Item Description Electrical Plug WJS1-P1 Boom Top Main Strut Butt Electrical Plug WJS2-P1 Electrical Plug WBT1-J8 Electrical Plug WBT1-J7 FIGURE 4-12 Installing The Main Strut Butt (continued) 16. Connect electrical plug WJS2-P1 (5) on the main strut butt to electrical plug WBT1-J7 (6) on the boom top.
  • Page 89 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION THIS PAGE INTENTIONALLY LEFT BLANK Manitowoc 4-19 Published 09-06-19, Control # 230-08...
  • Page 90 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View D View B View C View E Item Description Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) Connecting Pin (qty 2) SH 2 Shackle – 17 t (18.70 USt) (qty 4)

  • Page 91: Erecting The Strut Raising Arm

    Remove the locking pin (10, View B) and the pin (11, NOTE: Manitowoc reeves the jib strut top sheaves and the View B) that lock the kickstand (12, View B) in the main strut top sheaves with a two-piece sucker line shipping position.
  • Page 92 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Locking Pin (qty 2) Spreader Strap (qty 2) Spreader Strap Link (qty 2) Locking Pin (qty 2) Spreader Link (qty 2) Hair Pin Cotter (qty 4)

  • Page 93: Installing The Frontstay Spreader Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Frontstay Spreader Assembly Using an assist crane, remove the frontstay spreader assembly from the main strut butt assembly (22). Figure 4-14 for the following procedure. Remove the hair pin cotter (13) and the two-hole...
  • Page 94 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A Item Description Rigging Line Rigging Winch Wire Rope Guide (qty 4) Luffing Hoist Wire Rope Guide Sheave Upper Luffing Hoist Wire Rope Guide Sheave Lower Luffing Hoist Wire Rope Guide Sheave...

  • Page 95: Reeving The Strut Tops

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Reeving the Strut Tops • Over the upper luffing jib hoist wire rope guide sheave (5) • Through the 12M boom insert and under the lower luffing hoist wire rope guide sheave (6) CAUTION •...
  • Page 96 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View F (stored for operation) View E (stored for shipping) View G View D (stored for shipping) View C View H Item Description Rigging Line Rigging Winch Wire Rope Guide Luffing Jib Hoist Wire Rope Guide Sheave...
  • Page 97 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION 12. Remove the hitch pin (11, View J) to disconnect the NOTE: For boom lengths less than 56 m, remove the sucker line (12) from the storage lugs on the underside sucker line (12) when it reaches the wire rope of the jib strut top.
  • Page 98 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A SHIPPING POSITION View D SHIPPING POSITION View C View B View E STORED POSITION View G View F Item Description Item Description Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4)

  • Page 99: Installing The Main Strut Top

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Main Strut Top Remove the cotter pin, washer, and pin (22) from both sides of the main strut butt top hooked connectors (21). Figure 4-16 for the following procedure. Repeat this step for the other side.

  • Page 100: Preparing The Backstay Straps

    SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Safety Pin (qty 2) Hold-down Pin (qty 2) Adjustable Link (qty 2) Hair Pin Cotter (qty 4) Pin (qty 4) Pin Storage Hole (qty 4)
  • Page 101 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION THIS PAGE INTENTIONALLY LEFT BLANK Manitowoc 4-31 Published 09-06-19, Control # 230-08...
  • Page 102 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B Item Description Rigging Line Lower Boom Top Wire Rope Guide Upper Boom Top Wire Rope Guide View C Rope Keeper Boom Top Wire Rope Guide Raising Arm Sheave...

  • Page 103: Reeving The Strut Raising Arm

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Reeving the Strut Raising Arm Enable Rigging Winch mode. See "Selecting Rigging Winch Mode" on page 4-132. Figure 4-18 for the following procedure. NOTE: Make sure an assistant observes all wire rope...
  • Page 104 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View D View C View B View E Item Description Item Description Frontstay Spreader Assembly SH 2 Shackle – 17 t (18.70 USt) (qty 2) Hair Pin Cotter (qty 4)

  • Page 105: Attaching The 12M Straps To The Frontstay Spreader Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Attaching the 12M Straps to the Frontstay frontstay spreader assembly is clear of the ground surface. Spreader Assembly Remove the hair pin cotter (2, View B) and the pin (3, Figure 4-19 for the following procedure.

  • Page 106: Raising The Strut Assemblies

    SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 2) SH 3 Shackle – 40 t (44.00 USt) (qty 2) Bushing (qty 4) Short Strap of the 12M #680/681 Insert (qty 2) 65°...
  • Page 107 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION THIS PAGE INTENTIONALLY LEFT BLANK Manitowoc 4-37 Published 09-06-19, Control # 230-08...
  • Page 108 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C View D View E View E View F FIGURE 4-21 4-38 Published 09-06-19, Control # 230-08...

  • Page 109: Assembling The Jib Butt Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Legend for Figure 4-21 hitch pin and hair pin cotter. Repeat this step for the other side of the jib butt. Item Description Jib Butt Lower the butt support pedestals onto the blocking and SL 4 Sling –...
  • Page 110 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C View D View E View G View F View J View H Item Description Item Description Item Description Lifting Lug One (qty 2) Jib Butt Sling Choke on Lifting Lug Three...

  • Page 111: Lifting The Jib Butt Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Table 4-1 Luffing Jib Lifting Configurations Lifting Lifting Lifting Weight Sling Lifting Configuration kg (lb) Number View B — Jib Butt, 12M #680/681 Insert, and 6M 16 072 (35,433) SL 3 Transition Insert View C —...
  • Page 112 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL "Lifting the Jib Butt Assembly" on page 4-41 View A View B View C View D Item Description Item Description Minimum Distance 1,7 m (5.58 ft) Hydraulic Pin Puller Blocking Hinge Pin (qty 2)

  • Page 113: Installing The Jib Butt Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Jib Butt Assembly Install the retaining pin (10), collar (11), and locking pin (12) onto the hinge pin (9, View D). Repeat this step Figure 4-23 for the following procedure.
  • Page 114 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View E View C View D View F Item Description Item Description Jib Strut Pin Assembly (qty 2) 57º Angle Cotter Pin SH 3 Shackle – 40 t (44 USt) (qty 2) Clevis Pin SL 4 Sling –...

  • Page 115: Using The Luffing Jib As A Hold Back

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Using the Luffing Jib as a Hold Back load hoist wire rope (8, View A) to the luffing hoist wire rope (9, View A). Figure 4-25 for the following procedure. Haul in on the load hoist wire rope while paying out on Luff down the jib strut (1) to an approximately 57º...
  • Page 116 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Item Description Main Strut Locking Pin (qty 2) Strut Stop (qty 2) Two-hole Pin (qty 2) Attachment Anchor (qty 2) Jib Strut Cotter Pin (qty 2)

  • Page 117: Installing The Main Strut Stops And Frontstay Strap Hookup

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Main Strut Stops and Frontstay NOTE: The jib stop raising roller must be rotated away from the boom top. Strap Hookup Figure 4-25 for the following steps. Figure 4-26 for the following procedure.
  • Page 118 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A NOTE: The safety pins (6b) must be installed as shown in View C when the jib sections are assembled in the air. The safety pins do not need to be installed when the jib View B sections are assembled on the ground.

  • Page 119: Installing The Jib Inserts

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Install the safety pin (9) and remove the hand-held pin puller (11). Item Description Assist Crane d. Repeat this step for the other side of the jib butt. SL 4 Sling – 9 820 kg (21, 650 lb) (qty 4)
  • Page 120 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A SHIPPING View B WORKING Item Description Synthetic Lifting Sling from Assist Crane Wire Rope Guard Jib Wire Rope Guide Stop Block (2) Pin with Safety Pins (2) Strut (2) Jib Top...

  • Page 121: Raising The Jib Top Wire Rope Guide

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Raising the Jib Top Wire Rope Guide Figure 4-28 for the following procedure. Attach a synthetic lifting sling (1, View A) from the assist crane to the wire rope guard (2) in the jib top wire rope guide (3).
  • Page 122 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View C Item Description Item Description Jib Strap Cotter Pin Hair Pin Cotter Two-hole Pin (qty 2) Two-hole Pin Connecting Pin (qty 2) Storage Bracket Link (qty 2)

  • Page 123: Connecting The Jib Straps Between The Jib Sections

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Connecting the Jib Straps between the Jib Rotate the links (8) rearward from the shipping position to the working position (View B). Sections Install the connecting pin assembly in the reverse order Figure 4-29 for the following procedure.
  • Page 124 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL SHIPPING POSITION View B View A WORKING POSITION View C View D Item Description Item Description Pin (qty 4) Strap (qty 16) Sling and Shackle (qty 2) Link (qty 2) Lifting Lug (qty 8)

  • Page 125: Installing The Load Links

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Load Links Remove the connecting pin assemblies (5, View B) and set them aside for reassembly later. Figure 4-30 for the following procedure. Move the straps (6, View B) out of the way, if necessary, Remove the hair pin cotters and pin (1, View A) and to remove the link.

  • Page 126: Installing The Position Light And The Wind Speed Indicator

    SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Locking Pin (shipping position) (qty 2) Locking Pin (working position) (qty 2) Position Light and Wind Speed Indicator Assembly (shipping position) Position Light and Wind Speed Indicator Assembly (working position)
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  • Page 128 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Electrical Cable WBR3 Electrical Cable WJB3 Electrical Cable WJR3 Cable Reel Camera Cable WJT3 Cable Clip Camera Mounting Pad M12x30 Bolt (qty 4) Camera Eye Bolt View A View B...

  • Page 129: Installing The Jib Top Camera

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Jib Top Camera Pull out electrical cable WJR3 (3, View C) from the cable reel to the jib top electrical connector bracket. Figure 4-32 for the following procedure. Secure the cable in the cable clips on the bottom left Remove the camera (9) from storage in the job box or chord of the jib sections.
  • Page 130 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View D Item Description View C Electrical Cable WN100000 Cable Reel Electrical Cable WJR1 Cable Reel Cable Clip (qty varies) Jib Insert (qty varies) CAN NET IN Electrical Plug WJT1-J3...

  • Page 131: Connecting The Luffing Jib Electrical Cables

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Connecting the Luffing Jib Electrical Cables Connect electrical cable WJR1 to electrical plug WJT1- J1 (8). Figure 4-33 for the following procedure. Connect the strain reliefs (9) to the J-bolt (10). Pull out electrical cable WN100000 (1, View A) from the Disconnect and uncoil electrical cables WJB2-P1 (11) cable reel (2) in the jib butt.
  • Page 132 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View C Item Description Safety Pin (qty 4) Upper Boom Point Eight-sheave Lower Boom Point Sling (qty 2) Lifting Lug (qty 2) Electrical Cable Electrical Connector View D...

  • Page 133: Installing The Upper Boom Point

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Installing the Upper Boom Point Attach appropriate slings (4) from the assist crane to the lifting lugs (5) on the jib top. NOTE: An assist crane capable of lifting half the weight of Lift the jib top until the lower holes in the upper boom the luffing jib is required for this procedure.
  • Page 134 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Main Hoist (Drum 1) Auxiliary Hoist (Drum 2) Whip Hoist (Drum 3) Wire Rope Guide on 12M Insert Wire Rope Guide in 12M Insert (qty 2) Luffing Jib Hoist (Drum 6)

  • Page 135: Routing The Load Lines To The End Of The Luffing Jib

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Routing the Load Lines to the End of the NOTE: Wire rope and sheaves can be damaged if the rope is not properly retained on the sheaves. Luffing Jib The load block(s) and/or the hook and hook-and- Figure 4-35 for the following procedure.
  • Page 136 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View D Item Description Intermediate Suspension Pendant (qty 2) 12M Intermediate Suspension Insert Pendant Button (qty 14) Retaining Pin (qty 2) STORED Socket (qty 2) WORKING POSITION Pendant Chain and Hook (qty 2)

  • Page 137: Preparing The Intermediate Suspension Pendants

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Preparing the Intermediate Suspension 10. Connect the pendant chain and hook (6, View D) to the closest point on the chord to remove the slack from the Pendants pendant. Figure 4-36 for the following procedure.

  • Page 138: Pre-Raising Checks

    Figure 4-38 on page 4-70.  The luffing jib angle sensor is functioning properly and within range (see MLC650 Main Display Operation Manual).  The load lines are anchored properly to the drums, WARNING spooled tightly onto the drums, and engaged with the Falling Boom And Jib Hazard! proper sheaves.

  • Page 139: Raising The Boom And Luffing Jib

    RAISING THE BOOM AND LUFFING JIB NOTE: The following limits are indicated on the main display during the raising procedure: The following procedure applies to the MLC650 with or • Block Up—This fault goes off once the boom without VPC-MAX attachment.
  • Page 140 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A Item Description Jib Stop (qty 2) Jib Stop Support Cylinder (qty 2) Jib Stop Roller Bracket (2) Jib Strut Jib Straps Jib Point Rollers Boom Boom-to-Luffing Jib Angle Backstay Straps...
  • Page 141 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-38 for the following steps. • Luff down so the jib straps float up and down above the strap supports on the jib. Turn off swing park in the cab to release the swing brake •...
  • Page 142 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL ................................................. WARNING Falling Boom and Jib Hazard! Operator: be aware that side load conditions can cause Figure 4-38 on page 4-70 the luffing jib backstay straps to contact the boom rigging (straps, equalizer, wire rope) during boom raising and lowering operations.
  • Page 143 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-39 for the remaining steps. 12. Boom up to raise the boom (2) and the jib (3) until the boom reaches 85° (4) or the operating radius is within WARNING the capacity chart and the jib is above horizontal.
  • Page 144 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View D View C Item Description Chain Upper Boom Point Locking Pin Weight with 2-chain Attachments (storage position) Weight with 2-chain Attachments (single-part line configuration) Weight with 2-chain Attachments...

  • Page 145: Installing The Boom Block Up Limit Components

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION INSTALLING THE BOOM BLOCK UP LIMIT If using a single-part line configuration, attach the lift plate (6) to the load line. COMPONENTS Attach the hook-and-weight ball (7) to the load line. Figure 4-40 for the following procedure.
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  • Page 147: Lowering The Boom And Luffing Jib

    SET-UP AND INSTALLATION LOWERING THE BOOM AND LUFFING JIB NOTE: The following limits are indicated on the main display during the lowering procedure: The following procedure applies to the MLC650 with or • Block Up without VPC-MAX attachment. • Luffing Jib Max Up 1 and Max Up 2...
  • Page 148 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL WARNING Falling Boom and Jib Hazard! Operator: be aware that side load conditions can cause the luffing jib backstay straps to contact the boom rigging (straps, equalizer, wire rope) during boom raising and lowering operations.
  • Page 149 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-41 for the following procedure. Lower the jib until the boom-to-luffing jib angle (7) reaches the value specified in the Luffing Jib Raising If necessary, travel the ends of the crawlers under the Procedure chart.
  • Page 150 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Jib Point Rollers Boom Luffing Jib 135° Angle Jib Straps Backstay Straps Boom Butt Jib Top FIGURE 4-42 Figure 4-42 for the following steps. 10. Continue to lower the boom so the jib rolls forward along the ground.
  • Page 151 The jib stop could engage the boom top valves (6) can be mechanically actuated to lower during the lowering procedure and cause the jib to the jib stops. Contact the Manitowoc Crane Care collapse. Lattice Team for the manual override procedure.
  • Page 152 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Jib Stop (qty 2) FIGURE 4-44 Jib Stop Lug (qty 2) Jib Straps Blocking (qty varies) 1,7 m (5.6 ft) Height Figure 4-44 for the remaining steps: NOTE: If equipped with intermediate suspension, watch the pendants closely.
  • Page 153 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION THIS PAGE INTENTIONALLY LEFT BLANK Manitowoc 4-83 Published 09-06-19, Control # 230-08...
  • Page 154 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View D Item Description View C Chain Upper Boom Point Locking Pin Weight with 2-chain Attachments (storage position) Weight with 2-chain Attachments (single-part line configuration) Weight with 2-chain Attachments...

  • Page 155: Removing The Block Up Limit Components

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION REMOVING THE BLOCK UP LIMIT If using a single-part line configuration, remove the lift plate (6) from the load line. COMPONENTS 10. Remove the shackles (5) and chain (1, View F) from the Figure 4-45 for the following procedure.

  • Page 156: Luffing Jib Disassembly

    SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL LUFFING JIB DISASSEMBLY Item Description Locking Pin Assembly (qty 2) Jib Stop Raising Roller (working position) (qty 2) Jib Stop Raising Roller (stored position) (qty 2) Raising Roller Bracket (qty 2) Jib Stop (qty 2)
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  • Page 158 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View C STORED POSITION WORKING View B POSITION View A SHIPPING POSITION Item Description Retaining Pin (qty 2) Socket (qty 2) Pendant Button (qty 2) Retaining Pin (qty 2) Pin (qty 2)

  • Page 159: Removing The Intermediate Suspension Pendants

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Intermediate Suspension Connect the pendant chain (9, View E) to the lacing on the insert. Pendants Repeat this procedure for the other side of the insert. Figure 4-47 for the following procedure.
  • Page 160 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View D Item Description View C Electrical Cable WN100000 Cable Reel Electrical Cable WJR1 Cable Reel Cable Clip (qty varies) Jib Insert (qty varies) CAN NET IN Electrical Plug WJT1-J3...

  • Page 161: Disconnecting The Jib Electrical Cables

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Disconnecting the Jib Electrical Cables Disconnect electrical cable WJR1 (3, View D) from electrical plug WJT1- J1 (8, View D) on the jib top. Figure 4-48 for the following procedure. Disconnect electrical cable WN100000 (1, View D) from...

  • Page 162: Removing The Jib Top Camera

    SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Electrical Cable WBR3 Electrical Cable WJB3 Electrical Cable WJR3 Cable Reel Camera Cable WJT3 Cable Clip (qty varies) Camera Mounting Pad M12x30 Bolt (qty 4) Camera Eye Bolt View A...

  • Page 163: Removing The Position Light And Wind Speed Indicator

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Item Description Locking Pin (shipping position) (qty 2) Locking Pin (working position) (qty 2) Position Light and Wind Speed Indicator Assembly (shipping position) Position Light and Wind Speed Indicator Assembly (working position)
  • Page 164 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View C View A Item Description Safety Pin (qty 4) View B Upper Boom Point Eight-sheave Lower Boom Point Sling (qty 2) Lifting Lug (qty 2) Electrical Cable Electrical Connector View D...

  • Page 165: Removing The Upper Boom Point

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Upper Boom Point Slightly raise the jib top and remove the lower two-hole pins and safety pins (1, View D). NOTE: An assist crane capable of lifting half the weight of Lower the jib top, placing a block under the jib top.
  • Page 166 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A Item Description Jib Strut Short 12M Strap (qty 2) 12M Strap Link (qty 4) 12M #680/681 Insert Chord (qty 2) SL 4 Sling – 22 680 kg (50,000 lb) (qty 2) SH 3 Shackle –...

  • Page 167: Disconnecting The Jib Straps Between The Jib Sections

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION View B View A View C Item Description Item Description Jib Strap (qty 2) Storage Bracket (qty 2) Link (qty 2) Connecting Pin Assembly (qty 2) Two-hole Pin (qty 2) Two-hole Pin (qty 2)
  • Page 168 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B WORKING POSITION Item Description Item Description Hair Pin Cotter and Pin (qty 4) Strap (qty 16) Sling and Shackle (qty 2) Link (qty 2) Lifting Lug (qty 8)

  • Page 169: Removing The Load Links

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Load Links Move the straps out of the way, if necessary, to remove the link. Figure 4-54 for the following procedure. Using an assist crane, remove the link from the 6M...
  • Page 170 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description Assist Crane SL 4 Sling – 9 820 kg (21,650 lb) (qty 4) Lifting Lug (qty 4) Jib Insert Fixed Horizontal Pin (qty 2) Safety Pin (stored position) (qty 2)

  • Page 171: Removing The Jib Top

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Jib Top b. Slightly raise the jib top until the slings are taut. Remove the connecting pins (12b). Figure 4-55 for the following procedure. d. Install the connecting pins (12a) and the safety pins...
  • Page 172 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View C View D View E Item Description Item Description Item Description Load Line Wire Rope Cylinder Rod Retaining Pin (qty 2) 12M Connector Link (qty 4) Sucker Line Two-hole Pin (qty 2) SL 4 Sling –...

  • Page 173: Reeving The Main Strut Raising Arm And Disconnecting The Main Strut Stops

    Attach the other end of the sucker line to the rigging line Activate Strut Stop mode on the main display (see the wire rope (3). MLC650 Main Display Operation Manual) and haul in Enable Rigging Winch mode. See "Selecting Rigging the load line wire rope while luffing down to retract the Winch Mode"...
  • Page 174 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A "Lifting the Jib Butt Assembly" on page 4-41 View B View C View D View E Item Description Item Description Jib Stop Raising Pendant (qty 2) Pin Puller Cage Jib Stop Raising Pendant Lug (qty 2)

  • Page 175: Removing The Jib Butt Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Jib Butt Assembly Remove the collar assembly (3) from the hinge pin (4, View D) on both sides of the jib butt. Figure 4-57 for the following procedure. Install the hydraulic pin puller (5) to the pin puller cage Slowly haul in the load line to raise the jib strut to 65°...
  • Page 176 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B Item Description Item Description Blocking (qty 4) Connecting Pin (qty 2) Butt Support Pedestal (qty 2) Pin (qty 2) Jib Butt SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) SL 4 Sling –...

  • Page 177: Disassembling The Jib Butt Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Disassembling the Jib Butt Assembly Attach four SL 4 slings (11) and four SH 2 shackles (12) to the lifting lugs (13) on the jib butt (3, View B). Using an Figure 4-58 for the following procedure.

  • Page 178: Lowering The Strut Assemblies

    SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Main Strut Jib Strut 12M Strap (qty 3) SL 4 Sling – 8 017 kg (17,675 lb) (qty 2) SH 3 Shackle – 40 t (44 USt) (qty 2)

  • Page 179: Removing The 12M Straps

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION View A View C View B View E View D Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) SH 2 Shackle – 17 t (18.70 USt) (qty 2)
  • Page 180 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL Item Description SL 4 Sling – 22 680 kg (50,000 lb) (qty 2) Frontstay Spreader Assembly Connecting Pin Assembly (qty 2) Two-hole Pin Assembly (qty 2) View A Strut Shaft Link (qty 2)

  • Page 181: Removing The Frontstay Spreader Assembly

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Frontstay Spreader Assembly Remove the two-hole pin assemblies (9 and 10) from the storage position and place them in the working position, Figure 4-61 for the following procedure. securing the frontstay spreader assembly to the main strut butt assembly.
  • Page 182 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View C View B View D View E Item Description Item Description Safety Pin (qty 2) Boom Top Wire Rope Guide Hold-down Pin (qty 2) Raising Arm Sheave Adjustable Link (qty 4)

  • Page 183: Unreeving The Strut Raising Arm

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Unreeving the Strut Raising Arm to the shipping position. Repeat this step for the other side. Figure 4-62 for the following procedure. Remove the safety pin (1, View B) and the hold-down Pay out on the load hoist drum to slacken the load hoist pin (2, View B).
  • Page 184 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C View D View E Item Description Item Description Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) Shipping Link (qty 4) Button Socket SH 2 Shackle –...

  • Page 185: Unreeving The Strut Tops

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Unreeving the Strut Tops 11. Remove the luffing hoist wire rope from the button socket on the main strut. See "Anchoring Wire Rope to Figure 4-64 for the following procedure. Button Socket" on page 4-129.
  • Page 186 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C View D View E Item Description Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) Connecting Pin (qty 2) SH 2 Shackle – 17 t (18.7 USt) (qty 4)

  • Page 187: Lowering The Strut Raising Arm

    Prepare the jib strut top assembly for storage or shipping NOTE: Manitowoc Crane Care reeves the jib strut top as necessary. sheaves and the main strut top sheaves with a two- Remove the slings and shackles.
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  • Page 189: Removing The Main Strut Butt

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Item Description Item Description Electrical Plug WJS1-P1 Boom Top Main Strut Butt Electrical Plug WJS2-P1 Electrical Plug WBT1-J8 Electrical Plug WBT1-J7 FIGURE 4-66 Removing the Main Strut Butt Disconnect electrical plug WJS1-P1 (1) on the main strut butt from electrical plug WBT1-J8 (3) on the boom top.
  • Page 190 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View A SHIPPING POSITION WORKING POSITION View C View B View D View E Item Description SL 4 Sling – 8 017 kg (17,675 lb) (qty 4) SH 2 Shackle – 17 t (18.7 USt) (qty 4)
  • Page 191 MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Figure 4-67 for the remaining steps: 10. Lift the main strut butt away from the boom top and place the main strut butt on top of the jib strut butt. Using the ladder (5b) to gain access to the top of the struts, attach the SL 4 slings (1, View A) and SH 2 11.
  • Page 192 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL View B View A View C Item Description Ladder Hitch Pin (qty 2) Hair Pin Cotter (qty 2) Upper Banding Lacing Pin (qty 2) Safety Pin (qty 2) Platform Brace (qty 2)

  • Page 193: Removing The Jib Strut Butt

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Removing the Jib Strut Butt Install the hydraulic pin puller (21) to the pin puller cage and activate the pin puller to push the hinge pin out of Figure 4-68 for the following procedure.
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  • Page 195: Wire Rope Installation

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION WIRE ROPE INSTALLATION Before cutting the wire rope, apply seizings on both sides of the point where the cut will be made. Then cut the wire rope Wire Rope Specifications with a torch, rope cutter, or abrasive cut-off wheel.

  • Page 196: Anchoring Wire Rope To Drum

    SET-UP AND INSTALLATION MLC650 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 4-70 Anchoring Wire Rope to Drum Item Description...
  • Page 197 MLC650 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 198 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL T (Rope Clip Nut Torque) Item Description Wire Rope Clip Size Seizing 22,23 25,4 28,58 31,75 Dead End Live End in Straight Line with Socket (inch) (7/8) (1-1/8) (1-1/4) Socket Torque Wedge...

  • Page 199: Anchoring Wire Rope To Wedge Socket

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Anchoring Wire Rope to Wedge Socket After the socket is pinned in place, hoist the load slowly so the wedge seats tightly. Do not shock load the socket and wedge. WARNING Falling Load Hazard! WARNING •...
  • Page 200 SET-UP AND INSTALLATION MLC650 LUFFING JIB OPERATOR MANUAL No. 1.5 Pad Eye Item Inch Approximate Capacity 553 kg (1220 lb) 16,00 6,35 Item Description Rigging Line 25,40 Connector 11,18 7/16 Wire Rope with Button 28,70 1-1/8 Pad Eye 4,06 1/16...

  • Page 201: Pad Eye Usage For Wire Rope Reeving

    This slackening is caused by the normal stretch that occurs in a new wire rope under tension Some rotation-resistant wire rope supplied by Manitowoc is and periodically throughout the wire rope’s life from release equipped with a pad eye welded to the leading end of the of the load.

  • Page 202: Rigging Winch Operation

    FIGURE 4-76 RIGGING WINCH OPERATION Scroll to the rigging winch selection screen (5) in the main display. See MLC650 Main Display Operation If your crane is equipped with the optional rigging winch Manual for instructions. (Drum 0), see the Rigging Winch Assembly drawing at the Use either the jog dial on the right console or the scroll end of this section for wire rope routing and anchoring.

  • Page 203: Operating Rigging Winch

    Scroll to the rigging winch selection screen (5) in the crane’s programmable controller. main display. See MLC650 Main Display Operation Manual for instructions. CAUTION Use either the jog dial on the right console or the scroll...

  • Page 204: Load Line Reeving

    SET-UP AND INSTALLATION MLC650 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 4-77 achieve maximum hook capacity. The duplex hook has a...

  • Page 205: Dead End Locations

    MLC650 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION Dead End Locations Figure 4-78 for the upper boom point dead end locations and required hardware. See the Boom Rigging Drawing for the lower boom point dead end locations and required hardware.
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  • Page 207: Section 5

    Lube and Coolant Product Guide ........... . . 5-1 Manitowoc...
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  • Page 209: Lube And Coolant Product Guide

    MLC650 LUFFING JIB OPERATOR MANUAL LUBRICATION SECTION 5 LUBRICATION LUBRICATION See F2271 at the end of this section. LUBE AND COOLANT PRODUCT GUIDE See the publication at the end of this section. Manitowoc Published 09-06-19, Control # 230-08...
  • Page 210 LUBRICATION MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK Published 09-06-19, Control # 230-08...
  • Page 211 Maintenance ..............6-33 Manitowoc...
  • Page 212 MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 6-ii Published 09-06-19, Control # 230-08...

  • Page 213: General Maintenance

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE SECTION 6 MAINTENANCE GENERAL MAINTENANCE This section contains the maintenance and adjustment instructions for the limit devices used with the luffing jib attachment. 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 214 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK Published 09-06-19, Control # 230-08...

  • Page 215: Automatic Boom Stop

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE Item Description Automatic Boom Stop Limit Switch Assembly Maximum Boom Angle: ™ 83° Boom Only with VPC-MAX 85° Boom with Luffing Jib and without VPC-MAX 85° Boom with Luffing Jib and VPC-MAX 85° Boom Only with VPC™...
  • Page 216 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View A Switch Opened View B Switch Closed View C View D Limit Switch Wiring Right Side of Boom Butt Digital Level Switch Receptacle Function Maximum Switch Boom Angle Angle (16) Terminals 73.57° Black Ground 84.5°...

  • Page 217: Adjusting Automatic Boom Stop

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE Adjusting Automatic Boom Stop • If the boom reaches the specified angle before it stops, go to step If the boom stops before reaching the specified angle, perform the following: WARNING Loosen the jam nut (3).
  • Page 218 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL THIS PAGE INTENTIONALLY LEFT BLANK Published 09-06-19, Control # 230-08...
  • Page 219 MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE Item Description For Instructions Physical Jib Stop (qty 2) See “Physical Jib Stop Operation”, on page 6-9. Physical Jib Stop Position Limit Switch (qty 2) See “Luffing Jib Stop Position Switches — Version 1”, on...
  • Page 220 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Jib Stop (qty 2) Jib Stop Support Cylinder (qty 2) 135° Included Angle Jib Stop Pendant (qty 2) Jib Stop Bracket (qty 2) FIGURE 6-5 Roller (qty 2)

  • Page 221: Physical Jib Stop Operation

    The jib stops fully compress to provide a physical actuated to lower the jib stops. Contact the stop if the jib is raised to a boom-to-luffing jib angle Manitowoc Crane Care Lattice Team for the of 173°. manual override procedure.
  • Page 222 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View A Both Sides of Jib Butt Item Description Luffing Jib Stop Position Switch Physical Jib Stop Jib Stop Support Cylinder Needle Valve (inside solenoid valve) 100 mm (3.937 in) 17° Cover Switch Housing...

  • Page 223: Luffing Jib Stop Position Switches - Version 1

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE LUFFING JIB STOP POSITION SWITCHES — has extended to the distance (5). The angle (6) between the jib stop and the jib butt should be approximately 17°. VERSION 1 With the jib stop in its operating position, push up the...
  • Page 224 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View A Both Sides of Jib Butt View D Item Description Luffing Jib Stop Position Switch View B Physical Jib Stop Jib Stop Support Cylinder Needle Valve (inside solenoid valve) 100 mm (3.937 in) 17°...

  • Page 225: Jib Stop Position Switches Adjustment

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE LUFFING JIB STOP POSITION SWITCHES — stop support cylinder (3), allowing the cylinder to fully retract under the weight of the jib stop. VERSION 2 Release the needle valve. Figure 6-7 for Version 2 Luffing Jib Stop Position Switches.
  • Page 226 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL Check at Overhaul/Assembly The gap between each flange and nut will vary with the jib stop spring length tolerance (spring inside item 6). If the gap is more than 20 mm (0.79 in), verify that the spring length is within tolerance: Spring Free length = 1 702 mm (67 in) ±...

  • Page 227: Automatic Luffing Jib Stop - Max Up

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE AUTOMATIC LUFFING JIB STOP – MAX UP Perform the following steps with the boom and luffing jib on the ground. For past production attachments (View A): Check the dimension (D1) from the end of the...
  • Page 228 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View A Item Description Cover View B Switch Housing Limit Switch Wiring Mounting Screws with Washers Switch Adjusting Rod: 85 mm (3.35 in) long (PAST) Receptacle Function Terminals Adjusting Rod: 370 mm (14.57 in) long (CURRENT)

  • Page 229: Replacing Jib Max Up Actuator Rod

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE Replacing Jib Max Up Actuator Rod Drill a 6,35 mm (1/4 in) hole through the spring washer (8) and the actuator rod (6). This procedure applies to both past and current production. Install the slotted spring pin (7).
  • Page 230 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View C View B Limit Switch Wiring Switch Receptacle Function Terminals Black Ground Green Maximum Angle White 24 VDC Supply Blue Jumper Item Description View A Jib Max Down Limit Switch Boom Butt Plate...

  • Page 231: Automatic Luffing Jib Stop - Max Down

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE AUTOMATIC LUFFING JIB STOP – MAX Jib Stop Max Down Actuator Rod DOWN Adjustment Figure 6-10 for the following procedures. Perform the following steps with the boom and luffing jib on the ground: Check the dimension (D1) from the edge of the boom butt plate (2) to the end of the actuator rod (6).
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  • Page 233: Replacing Jib Stop Max Down Actuator Rod

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE Replacing Jib Stop Max Down Actuator Rod Install the slotted spring pin (7). Push the actuator rod (6) in until the limit switch clicks Figure 6-10 for the following procedure. open. Check that there is over-travel (12, View B) as Disassemble the limit switch assembly (View A) and shown.
  • Page 234 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL Item Description Pawl Limit Switch Screw Limit Switch Lever Limit Switch Shaft 40° Angle Eye Bolt Return Spring Ratchet Grease Fitting FIGURE 6-11 6-22 Published 09-06-19, Control # 230-08...

  • Page 235: Drum 6 Pawl Limit Switch

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE DRUM 6 PAWL LIMIT SWITCH Check the luffing hoist pawl for proper adjustment each time the VPC-MAX and fixed mast are installed. Figure 6-11 for the following procedure: Adjustment The Drum 6 pawl limit switch must be properly adjusted to ensure proper operation of the hoist.
  • Page 236 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL View A View B View C Item Description Luffing Jib Blocking (qty varies) Proximity Sensor (qty 4) Boom Top Sheave (qty 2) Proximity Sensor Wheel (qty 2) FIGURE 6-12 6-24 Published 09-06-19, Control # 230-08...

  • Page 237: Sheave Proximity Sensor

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE SHEAVE PROXIMITY SENSOR Maintenance At least every week or every 40 hours of operation, inspect Operation the boom top sheave proximity sensors for a loose or Proximity sensors generate magnetic fields to sense metal damaged sensor or cable.
  • Page 238 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL Item Description Drum 6 Gearbox Fill Plug Drain Plug Sight Glass 18° Shipping Angle FIGURE 6-13 6-26 Published 09-06-19, Control # 230-08...

  • Page 239: Drum 6 Oil Change

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE DRUM 6 OIL CHANGE Remove the fill plug. NOTE: With the fill plug removed, air enters the gearbox, General allowing the oil to drain faster. The Drum 6 gearbox (1) is filled with gear oil and is not open Place a suitable container under the drain plug (3).
  • Page 240 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL Item Description Chain Upper Boom Point Locking Pin Weight with 2-chain Attachments (storage position) Weight with 2-chain Attachments (single part line configuration) Weight with 2-chain Attachments (multi-part line configuration) Shackle (qty 2) Lift Plate...

  • Page 241: Installing And Adjusting The Block-Up Limit

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE INSTALLING AND ADJUSTING THE BLOCK- • Jib top controller UP LIMIT • Normally closed limit switch assembly fastened at the locations shown • Weight freely suspended by chain from each limit switch actuating lever (weight encircles load line as shown) WARNING •...
  • Page 242 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL Item Description Luffing Jib Blocking (qty varies) Cover Limit Switch Assembly Limit Switch Lever Actuating Lever (closed position) Actuating Lever (open position) Grease Fitting Spring (qty 2) Eye Bolt and Nut (qty 2) Setscrew...

  • Page 243: Block-Up Limit Switch Maintenance

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE Block-Up Limit Switch Maintenance CAUTION CAUTION Avoid Sheave Damage! Use extreme care when testing the block-up limit controls Prevent Damage! when the boom and jib are raised. To prevent two-blocking from occurring, do not operate...
  • Page 244 MAINTENANCE MLC650 LUFFING JIB OPERATOR MANUAL Item Description External Hydraulic Accumulator (qty 2) Internal Hydraulic Accumulator (inside each jib stop support cylinder) Jib Butt Pressure Gauge (qty 2) Jib Stop Support Cylinder (qty 2) Solenoid Valve (qty 2) FIGURE 6-16...

  • Page 245: Jib Stop Accumulator Maintenance

    MLC650 LUFFING JIB OPERATOR MANUAL MAINTENANCE JIB STOP ACCUMULATOR MAINTENANCE  Check the accumulator (1A or 1B) for any oil leaks.  Check the hydraulic pressure gauges (3) for any cracks Figure 6-16 for the following procedure: or leaks. Operation ...
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  • Page 247 Manitowoc Dealer ........
  • Page 248 Manitowoc Supplied Lifting Slings and Shackles........

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