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Table of Contents 

Mini-Crawler Crane

 M A E D A

 

ii 

9/2020 MC285CB-3 

Rated Total Load Chart for Searcher Hook-SH2..................................................... 3-17

 

Rated Total Load Chart for Searcher Hook-SH3..................................................... 3-18

 

WORKING RADIUS/LIFTING HEIGHT ............................................................................. 3-19

 

Standard................................................................................................................... 3-19

 

Working Radius/Lifting Height for Searcher Hook ................................................... 3-21

 

Section 4 

OPERATION

 

MACHINE COMPONENTS ................................................................................................. 4-2

 

BATTERY COMPONENTS ................................................................................................. 4-4

 

TRAVEL CONTROLS .......................................................................................................... 4-6

 

Control Location ......................................................................................................... 4-6

 

Switches ..................................................................................................................... 4-7

 

Motor Speed Adjuster Dial .................................................................................... 4-7

 

L. H. Travel Lever/Locking lever ........................................................................... 4-7

 

R. H. Travel Lever/Locking lever .......................................................................... 4-7

 

Starter Switch ........................................................................................................ 4-7

 

Emergency Stop Switch (EMO) ............................................................................ 4-8

 

Horn Switch ........................................................................................................... 4-8

 

13B

Working Light Switch ............................................................................................ 4-8

 

CRANE AND BOOM CONTROLS ...................................................................................... 4-9

 

Control Location ......................................................................................................... 4-9

 

Controls .................................................................................................................... 4-10

 

Slewing Lever ..................................................................................................... 4-10

 

Boom Telescoping Lever .................................................................................... 4-10

 

Winch Lever ........................................................................................................ 4-10

 

Boom Lift Lever ................................................................................................... 4-10

 

Emergency Stop Switch (EMO) .......................................................................... 4-10

 

Horn Switch ......................................................................................................... 4-10

 

MONITOR .......................................................................................................................... 4-11

 

16B

Starting Screen ........................................................................................................ 4-11

 

17B

Home Screen ........................................................................................................... 4-12

 

31B41B

User Mode ............................................................................................................... 4-17

 

56B

Warning Display ....................................................................................................... 4-22

 

COLD WEATHER OPERATION ....................................................................................... 4-25

 

STARTING ......................................................................................................................... 4-26

 

Starting the Machine ................................................................................................ 4-26

 

WARM-UP ......................................................................................................................... 4-27

 

STOPPING ........................................................................................................................ 4-28

 

Normal Stopping ...................................................................................................... 4-28

 

Emergency Stopping ............................................................................................... 4-28

 

TRAVELLING POSITION .................................................................................................. 4-29

 

TRAVELLING CONTROLS AND OPERATION ................................................................ 4-29

 

Directional Controls ................................................................................................. 4-31

 

Summary of Contents for MC285CB-3

Page 1: ...Mini Crawler Crane Operation Manual 102BE OM2009 00 ...

Page 2: ...ead to serious injury The operators and maintenance personnel must carefully read this manual and sufficiently understand its contents before operation inspecting maintaining the machine Keep this manual at hand to read it over anytime ...

Page 3: ... PRINCIPLE SPECIFICATIONS LIST 3 4 Machine Specifications 3 4 Radio Remote Control System Specifications 3 6 Searcher Hook Specifications 3 7 DIMENSIONAL DRAWINGS 3 8 Machine Dimensional Drawing 3 8 Searcher Hook Dimensional Drawing 3 8 Outrigger Width Dimensional Drawing 3 9 RATED TOTAL LOAD CHARTS 3 10 Programmable Moment Limiter 3 10 Reading the Angle Indicator 3 10 Boom Length 3 11 Rated Total...

Page 4: ...R H Travel Lever Locking lever 4 7 Starter Switch 4 7 Emergency Stop Switch EMO 4 8 Horn Switch 4 8 13BWorking Light Switch 4 8 CRANE AND BOOM CONTROLS 4 9 Control Location 4 9 Controls 4 10 Slewing Lever 4 10 Boom Telescoping Lever 4 10 Winch Lever 4 10 Boom Lift Lever 4 10 Emergency Stop Switch EMO 4 10 Horn Switch 4 10 MONITOR 4 11 16BStarting Screen 4 11 17BHome Screen 4 12 31B41BUser Mode 4 1...

Page 5: ...hen Stopping the Machine 4 54 Operation in Emergencies 4 55 CRANE SAFETY DEVICES 4 56 Interlock Characteristics 4 57 Crane Operations 4 58 Crane Stowing Operations 4 58 CRANE OPERATION 4 59 Before Crane Operation 4 61 Crane Operation Position 4 62 Motor Speed Operation 4 62 Travelling operation unit only when travelling 4 62 Monitor Only During Crane Outrigger Operation 4 63 Radio Remote Control O...

Page 6: ...Battery Charging 4 87 Monitor Display When Charging 4 87 User Mode Switch 4 87 Rotary Lamp ON OFF Selection 4 87 Charging Method 4 88 RADIO REMOTE CONTROL SYSTEM INTRODUCTION 4 89 General 4 89 Operation Precautions 4 92 RADIO REMOTE CONTROL SYSTEM FEATURES 4 94 Transmitter 4 94 Receiver 4 94 Transmitter Accessories 4 94 Functions of Radio Remote Control System 4 94 RADIO REMOTE CONTROL SYSTEM COMP...

Page 7: ...trol System 4 116 Inspection after Ending Remote Control System Operation 4 117 HANDLING TRANSMITTER BATTERY 4 117 Replacement Timing of Battery 4 117 Replacement Method of Battery 4 117 Charging Method of Battery 4 118 SEARCHER HOOK SAFETY PRECAUTIONS 4 120 Moment Limiter Settings 4 120 Searcher hook position settings 4 120 SEARCHER HOOK COMPONENTS OPTION 4 121 SEARCHER HOOK MONITOR 4 122 Home Sc...

Page 8: ...RAL MACHINE MAINTENANCE 5 35 Rubber Tracks 5 35 Wire Rope 5 41 Wire Rope Boom Telescope Extension 5 46 Air Breather Inspection 5 49 Drain Water and Sediment Inside Hydraulic Oil Tank 5 51 STORAGE 5 52 Temporary Storage 5 52 Long Term Storage 5 52 Before Storage 5 52 During Storage 5 52 After Storage 5 52 COLD TEMPERATURE PREPARATION 5 53 Oil 5 53 Battery 5 53 After Daily Operation 5 53 SEARCHER HO...

Page 9: ... D A Table of Contents 9 2020 MC285CB 3 vii TROUBLESHOOTING 5 58 Machine Body 5 58 Electrical Components 5 59 Battery 5 59 Electric Motor 5 60 Radio Remote Control System 5 61 Error Codes 5 62 Slewing Position Calibration 5 63 ...

Page 10: ...Table of Contents Mini Crawler Crane M A E D A viii 9 2020 MC285CB 3 This Page Intentionally Left Blank ...

Page 11: ...9 2020 MC285CB 3 1 1 Section 1 INTRODUCTION ...

Page 12: ...or a Maeda sales service agency before performing maintenance on this machine Installation and operation of this machine must comply with all laws and regulations where operated Only personnel who have obtained a licence stipulated by the laws and regulations from the place of use are qualified to operate this machine establish the power connection of the power supply equipment and inspect and rep...

Page 13: ...9 2020 MC285CB 3 2 1 Section 2 SAFETY ...

Page 14: ...ituation which can cause damage to the mini crawler crane personal property and or the environment or cause the equipment to operate improperly SAFETY PRECAUTIONS There is no substitute for common sense and careful practices Improper practices or carelessness can cause burns cuts mutilation asphyxiation other bodily injury or death This information contains general safety precautions and guideline...

Page 15: ...e rated total load chart Rated total load use rated total load chart Never try to hoist a load that exceeds the rated total load Rated total load is the mass of the load plus weight of the winch lines and the weight of the hook block Always calculate the total load using the rated total load chart before you attempt to hoist the load Never rely on the moment limiter as the primary means to determi...

Page 16: ...than one load at a time When you hoist a long load such as pipes clamp the load vertically or secure it at both ends Slewing Hazard Never slew a load over anyone Always slew the load as smoothly and slowly as possible Any sudden movement could cause the load to sway and the machine to tip over Keep away from other cranes working in the area to avoid accidental contact Never slew the load over the ...

Page 17: ...chine Modification Hazard Never modify the machine without written consent of the manufacturer Any modification can affect the safe operation of the machine Exposure Hazard Always wear personal protective equipment including appropriate clothing gloves work shoes and eye and hearing protection as required by the task at hand Explosion Hazard While the battery is charging hydrogen gas is being prod...

Page 18: ...ers are not properly installed on the machine Always turn the Starter Switch to the OFF position after operation is complete and remove the key from the switch Keep the key in your possession when the machine is not operating Attach a Do Not Operate tag near the Key Switch while performing maintenance on the equipment Never operate the machine while wearing a headset to listen to music or radio be...

Page 19: ... the boom outrigger or other machine surface Where necessary wear protective equipment and a safety harness The safety messages that follow have CAUTION level hazards Poor Lighting Hazard Ensure that the work area is adequately illuminated Always install wire cages on portable safety lights Tool Hazard Always use tools appropriate for the task at hand and use the correct size tool for loosening or...

Page 20: ... or repairs Operating a machine with accumulated dirt and debris will cause premature wear of machine components Accumulated dirt and debris also hinders effective machine inspection Retrieve any tools or parts that may have dropped inside of the machine to avoid improper machine operation Never dispose of hazardous materials by dumping them into a sewer on the ground or into groundwater or waterw...

Page 21: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 9 SAFETY LABEL LOCATIONS Machine Body Fig 2 1 ...

Page 22: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 10 9 2020 MC285CB 3 Fig 2 2 ...

Page 23: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 11 5 102 4748700 2 places 6 102 4784300 7 553 4267400 2 places 8 102 3324500 9 350 4539700 4 places 10 103 4592500 ...

Page 24: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 12 9 2020 MC285CB 3 15 350 4432100 16 553 4268000 ...

Page 25: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 13 17 102 2223200 ...

Page 26: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 14 9 2020 MC285CB 3 18 349 4427100 19 102 4785100 20 353 4488700 3 places 21 893 4239100 22 CL000200010 2 places ...

Page 27: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 15 23 553 4267300 2 places 24 102 4791800 25 353 4488400 26 353 3235200 29 349 4422000 30 553 4267500 2 places ...

Page 28: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 16 9 2020 MC285CB 3 32 102 4792200 33 353 4488600 39 101 4593300 4 places 40 553 4267700 3 places ...

Page 29: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 17 42 102 2223300 ...

Page 30: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 18 9 2020 MC285CB 3 45 553 4267600 46 349 4427200 47 103 4604800 48 102 4619800 50 584 4581700 2 places ...

Page 31: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 19 51 102 3441100 53 102 4749400 55 102 4750600 ...

Page 32: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 20 9 2020 MC285CB 3 58 102 4788200 59 102 4788400 62 102 4792300 3 places ...

Page 33: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 21 Searcher Hook Option Fig 2 3 ...

Page 34: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 22 9 2020 MC285CB 3 1 102 4621200 2 places 2 102 3340000 4 102 4620300 2 places 5 102 4608500 2 places ...

Page 35: ...M A E D A Mini Crawler Crane Section 2 SAFETY LABEL LOCATIONS 9 2020 MC285CB 3 2 23 10 102 2224000 ...

Page 36: ...Section 2 SAFETY LABEL LOCATIONS Mini Crawler Crane M A E D A 2 24 9 2020 MC285CB 3 This Page Intentionally Left Blank ...

Page 37: ...9 2020 MC285CB 3 3 1 Section 3 SPECIFICATIONS TERMINOLOGY AND CAPACITY CHARTS ...

Page 38: ...all width between the crane and outrigger minimised while housed in travelling position This compact design is ideal for work in confined areas Two travel lever operation enables direction changes forward backward and right left and also pivot and spin turns A battery is provided to allow operation without exhaust gas emissions Crane The crane is composed of a telescoping system boom system hook b...

Page 39: ...ARTS on page 3 10 Fig 3 1 Rated Load A load derived by subtracting the mass weight of hoisting accessories hooks and slinging ropes from the rated total load Working Radius A horizontal distance between the axis of slewing and the hook centre Fig 3 2 Boom Length A distance between the boom primary pin and the sheave pin of the end boom Fig 3 3 Boom Angle An angle which the boom forms with the hori...

Page 40: ...oom Telescoping System Type Two sequential hydraulic cylinders with two wire rope telescoping systems Boom type Fully automatic 5 section pentagonal telescopic Boom length 2 535 m 8 575 m Boom telescoping stroke time 6 04 m 22 sec Boom System Type Two hydraulic double acting direct acting cylinders Boom angle time 0 to 80 degrees 14 0sec Slewing System Type Slew bearing supported with hydraulic mo...

Page 41: ...0 m Electric motor Output 7 5 kW AC 30 V 2500 min 1 Safety Device Over winding detector over unwinding stop device angle indicator hydraulic safety valve wire rope latch level machine body inclination alarm EMO Switch crane outrigger interlock device moment limiter outrigger setting light working status lamp Options Black rubber tracks Single fall hook Searcher hook Classification Mobile crane ISO...

Page 42: ...Misoperation avoidance function during interruption of radio remote control Automatic power OFF device Auto power off device Transmitter stop function when battery capacity decreases Alarm switch Transmitter voltage Battery BA405000 6 VDC at 1500 mAh Receiver voltage Power of crane main body 12 VDC Continuous operating hours of Transmitter Approximately 20 hours Changes depending on usage environm...

Page 43: ...archer Hook Specifications System Item MC285CB 3 Mass and dimensions Machine mass 2017 kg Stowed length width height 3000 750 1470 mm Performance Crane capacity 850 kg Maximum working radius 9 7 m Maximum lifting height above ground 8 9 m Only the searcher hook dedicated values are given here ...

Page 44: ...Section 3 DIMENSIONAL DRAWINGS Mini Crawler Crane M A E D A 3 8 9 2020 MC285CB 3 DIMENSIONAL DRAWINGS Machine Dimensional Drawing Fig 3 6 Searcher Hook Dimensional Drawing Fig 3 7 ...

Page 45: ...M A E D A Mini Crawler Crane Section 3 DIMENSIONAL DRAWINGS 9 2020 MC285CB 3 3 9 Outrigger Width Dimensional Drawing Fig 3 8 ...

Page 46: ...ed in the table even slightly crane operation should proceed with respect to the rated total load corresponding to the working radius The rated total load includes the mass of the hoisting accessory rigging and hook block When the crane is used with the outriggers extended other than at maximum extension crane operation should proceed with respect to the values specified in the Rated Total Load Ch...

Page 47: ...m 2 540 4 075 m Boom 4 080 5 575 m Boom 5 580 7 075 m Boom 7 080 8 575 m Boom 1 2 535 m Boom All the booms are retracted Fig 3 10 2 2 540 4 075 m Boom When boom begins to extend until boom is fully extended with booms fully retracted Fig 3 11 3 4 080 5 575 m Boom With boom fully extended and when boom begins to extend until boom is extended until the first mark on boom is visible at the end of boo...

Page 48: ...20 MC285CB 3 4 5 580 7 075 m Boom When boom begins to extend past the first mark until the boom extends until the second mark is visible at the end of boom Fig 3 13 5 7 080 8 575 m Boom When boom begins to extend past the second mark until booms are fully extended Fig 3 14 ...

Page 49: ...oad 41 2 kN Rated Total Load Chart 4 Falls Rated Total load Chart 4 falls The unit of loads kg 2 535 m Boom 2 536 4 075 m Boom 4 076 5 575 m Boom 5 576 7 075 m Boom 7 076 8 575 m Boom Load radius m Loaded Boom angle deg Outrigger position Loaded Boom angle deg Outrigger position Loaded Boom angle deg Outrigger position Loaded Boom angle deg Outrigger position Loaded Boom angle deg Outrigger positi...

Page 50: ...30 130 6 5 7 0 31 5 200 100 7 0 7 5 24 0 180 80 7 5 8 0 13 0 150 70 8 0 Hook block mass weight 30 kg standard supplied Maeda hook block or ball Rated Total Load Chart Single Fall Rated Total load Chart 1 Parts of Line The unit of loads kg 2 535 m Boom 2 536 4 075 m Boom 4 076 5 575 m Boom 5 576 7 075 m Boom 7 076 8 575 m Boom Load radius m Loaded Boom angle deg Outrigger position Loaded Boom angle...

Page 51: ...mpensate for boom deflection as the load is lifted 4 Deductions from Searcher Hook Rated Total Load must be made for the weight of the searcher hook 22 kg as well as block ball and all rigging 5 All capacities above the bold line are based on structural strength and other limitations All other rated total loads are based on stability not exceeding 75 of tipping loads 6 Crane users must consult the...

Page 52: ... than MAX MAX Other than MAX MAX Other than MAX MAX Other than MAX MAX Other than MAX 50 0 or more Prohibited 50 0 or more Prohibited 50 0 or more Prohibited 50 0 or more Prohibited 50 0 or more Prohibited 2 0 46 0 850 820 2 0 2 5 31 0 850 740 2 5 2 9 10 0 850 610 48 5 850 580 2 9 3 0 46 5 850 540 3 0 3 5 37 0 850 400 3 5 3 6 35 5 830 380 3 6 4 0 25 0 830 290 46 5 850 300 4 0 4 4 7 0 730 210 41 0 ...

Page 53: ...ore Prohibited 75 0 or more Prohibited 50 0 or more Prohibited 50 0 or more Prohibited 50 0 or more Prohibited 1 5 59 5 850 850 70 5 850 850 1 5 2 0 47 5 850 820 63 5 850 820 2 0 2 5 31 0 850 740 56 5 850 740 2 5 2 8 12 0 850 630 50 0 850 580 2 8 3 0 48 0 850 540 58 0 850 400 3 0 3 5 38 0 850 400 52 5 850 350 3 5 3 6 36 0 830 380 51 0 850 340 61 5 690 310 3 6 4 0 24 5 830 290 46 0 850 300 58 0 690...

Page 54: ...her than MAX MAX Other than MAX MAX Other than MAX 1 5 60 0 850 850 71 5 850 850 1 5 2 0 46 5 850 820 64 5 850 820 2 0 2 5 25 0 850 740 56 5 850 740 2 5 2 6 2 0 850 700 49 5 850 580 2 6 3 0 47 5 850 540 60 0 850 400 3 0 3 5 36 0 850 400 54 0 850 350 3 5 3 6 34 0 830 380 53 0 850 340 62 0 690 310 3 6 4 0 17 5 830 290 47 5 850 300 58 0 690 270 64 0 460 260 4 0 4 1 11 0 820 270 41 5 730 240 54 0 640 ...

Page 55: ...nd lifting height above the ground with no object hoisted The diagram indicates that there is no deflection in the boom The diagram is based on the assumptions that the operation is performed without load and that the outriggers are set correctly and on a firm and level surface The boom 4 represents a condition where half of the mark passes boom 3 For more information see RATED TOTAL LOAD CHARTS o...

Page 56: ... on page 3 19 shows the relationships between the working radius boom angle and lifting height at no load with no deflection in the boom A deflection occurs in the boom when an object is hoisted which causes the working radius to widen slightly This is load radius The rated total load decreases with increase in the working radius Actual crane operation requires planning of work allowing for suffic...

Page 57: ...s Lifting Height for Searcher Hook DANGER When using the searcher hook be sure to set searcher hook mode for moment limiter When using the searcher hook the searcher hook position must always be switched to suit the actual conditions Never use the searcher hook and the crane hook simultaneously Fig 3 21 1 ...

Page 58: ...Section 3 WORKING RADIUS LIFTING HEIGHT Mini Crawler Crane M A E D A 3 22 9 2020 MC285CB 3 Fig 3 21 2 ...

Page 59: ...M A E D A Mini Crawler Crane Section 3 WORKING RADIUS LIFTING HEIGHT 9 2020 MC285CB 3 3 23 Fig 3 21 3 ...

Page 60: ...Section 3 WORKING RADIUS LIFTING HEIGHT Mini Crawler Crane M A E D A 3 24 9 2020 MC285CB 3 This Page Intentionally Left Blank ...

Page 61: ...9 2020 MC285CB 3 4 1 Section 4 OPERATION ...

Page 62: ...linder inside the boom 4 Boom Derrick Cylinder 5 Angle Indicator 6 Winch 7 Post 8 Travel Control 9 Outrigger 10 Outrigger Cylinder 11 Machinery Cover 12 Rubber Track 13 Hook Hanger 14 Crane Control 15 Hook Block 16 Hydraulic Oil Tank 17 Front Idler 18 Track Roller 19 Tandem Track Roller 20 Carrier Roller 21 Travelling Motor and Sprocket 22 Monitor ...

Page 63: ...on method of travelling see TRAVELLING CONTROLS AND OPERATION on page 4 29 Outrigger A device for stabilizing the vehicle body horizontally composed of 4 units For outrigger setup see OUTRIGGER SETTING on page 4 43 for stowage see OUTRIGGER STOWING on page 4 53 Outrigger Cylinder A cylinder for extending the outrigger Machinery Cover A left right splitting machinery cover Rubber Tracks Rubber trac...

Page 64: ...TTERY COMPONENTS Mini Crawler Crane M A E D A 4 4 9 2020 MC285CB 3 BATTERY COMPONENTS Fig 4 2 1 Battery 2 Battery Charging Port 3 Power Supply Cable 4 Disconnect Switch 5 Charger 6 Electric Motor 7 Motor Controller ...

Page 65: ...rger A device that provides charging power from an input power source and controls the battery charging Fig 4 4 The battery includes a display and features the following functions Mode switch 1 Press to display information on the display Display 2 Displays various information Current Time display selector switch 3 Press to toggle the display between current and time Voltage Capacity display select...

Page 66: ...M A E D A 4 6 9 2020 MC285CB 3 TRAVEL CONTROLS Control Location Fig 4 5 1 Motor Speed Adjuster Dial 2 L H Travel Lever Locking lever 3 R H Travel Lever Locking lever 4 Starter Switch 5 Emergency Stop Switch EMO 6 Horn Switch 7 Working Light Switch ...

Page 67: ...ine travel operations and crane outrigger operations Travel Pull up the lever while releasing the lock to allow travel operations Crane Outrigger Push in and stow the lever while releasing the lock to allow crane outrigger operations Fig 4 8 NOTICE The following table shows how the lever position corresponds to the devices that can be operated Lever position Crane Operates Does not operate Travel ...

Page 68: ...starting after an emergency stop return all of the levers to their neutral positions then return the emergency stop switch to the OFF position Horn Switch The Horn Switch is used to sound the horn Fig 4 11 NOTICE The horn sounds only for as long as the switch is pressed down Release the switch to silence the horn The horn switch is provided on the crane operation side as well 13BWorking Light Swit...

Page 69: ...Crane Section 4 CRANE AND BOOM CONTROLS 9 2020 MC285CB 3 4 9 CRANE AND BOOM CONTROLS Control Location Fig 4 13 1 Slewing Lever 2 Boom Telescoping Lever 3 Winch Lever 4 Boom Lift Lever 5 Emergency Stop Switch EMO 6 Horn Switch ...

Page 70: ...in the event of an accident or emergency The Emergency Stop Switch EMO must be in the OFF position to start the machine Fig 4 14 ON Press switch down to stop machine OFF Turn switch clockwise right to allow the switch to return to the ON position The switch returns to its original position and the emergency stop state is reset When restarting after an emergency stop return all of the levers to the...

Page 71: ...eration lock password entry is activated then after the startup screen is displayed the operation lock password screen will display Next a standby screen appears before switching to the home screen When the travel lever is pulled up the home screen switches to the travel screen Only travel operations are possible on this screen The crane and outriggers cannot be operated Fig 4 16 ...

Page 72: ...k Stowage Boom Stowage Switch 4 Boom Lift Bypass Switch 5 Motor Speed Adjuster Switch 6 Level Gauge 7 Time Display 8 Hour Meter Display 9 Battery Level Indicator 10 Radio Remote Control System Connection Indication 11 Outrigger Status Display 12 Moment Limiter Status Display 13 Warning Display 14 Normal Multi Mode Display 15 Eco Mode Display ...

Page 73: ...ed when stowing the hook or the boom Press the switch to display the selection for hook stowage and boom stowage Fig 4 20 The hook or boom can be stowed by pressing each switch Boom stowage Switch 3 1 Hook stowage Switch 3 2 For more information on stowage procedures see Crane Stowing Operation on page 4 67 Fig 4 21 Boom Lift Bypass Switch Used to lift the boom in overload state Lifting is possibl...

Page 74: ...being used The motor speed adjusted applies only when in crane mode and outrigger mode If the motor speed is limited by an eco mode setting the eco mode setting takes precedence Fig 4 23 Motor speed Icon 900 rpm 1300 rpm 1700 rpm 2100 rpm 2500 rpm Level Gauge Displays the tilt status of the machine The position of the yellow bubble indicates the direction in which the machine is tilting Fig 4 24 T...

Page 75: ...interval of 30 seconds when the charge is 10 or less 26B27BRadio Remote Control System Connection Display Displays the current radio remote control system connection status On The radio remote control system is connected Off The radio remote control system is not connected Fig 4 26 28BOutrigger Status Display Displays the current outrigger status For more information on display content see OUTRIGG...

Page 76: ...ormal Outrigger State M lit Multi Outrigger State M blinking Multi Mode failed The crane cannot be used in this state See Setting Outriggers Multi Outrigger State on page 4 47 and redeploy the outriggers Fig 4 28 Eco Mode Display Displays the eco mode status currently set STD Standard mode ECO1 Eco mode 1 ECO2 Eco mode 2 For information on the eco mode settings see User Mode on page 4 17 Fig 4 29 ...

Page 77: ...r of Falls Change 2 2 Eco Mode Setting Selection 2 3 Travel Alarm ON OFF Selection 2 4 Error History Display 2 5 Consumables Display 2 6 Monitor Brightness Adjustment 2 7 Time Setting 2 8 Language Change 2 9 Switch Tone ON OFF Change 2 10 Software Version Check 2 11 Warming Up ON OFF Selection 2 12 Radio Remote Control System Accelerator Switch 2 13 Home Switch 2 14 Display Page Change ...

Page 78: ...or speed for individual operations It balances operability with battery consumption by limiting the motor speed without having to alter the operating speed for individual tasks Eco Mode 2 This limits the maximum motor speed for all operations The maximum motor speed is limited for all operations so operating speed may be reduced On the other hand battery consumption is minimized Fig 4 32 Travel Al...

Page 79: ...reen if the remaining time is 30 h or 3 days while red text and a red icon will appear on the Home screen when the remaining time is 0 h or 0 days Replace consumable promptly Continued use past the recommended replacement date may be dangerous and harm the machine NOTICE We recommend setting the consumable icon display selection 2 5C to Always Always Consumable icons are constantly displayed on th...

Page 80: ...ch in this condition When the check mark is finally pressed editing is completed Fig 4 39 24 12 Hour Display Change When the switch 2 7C is pressed time display can be changed to either 24 hour display or 12 hour display Fig 4 40 Summer Time ON OFF When the switch 2 7D is pressed ON or OFF of summer time can be selected Summer Time OFF Originally set time is displayed Summer Time ON Time display i...

Page 81: ...warming up be turned on in cold conditions as the machine and the hydraulic oil may take time to warm up Radio Remote Control System Accelerator Switch The acceleration value can be adjusted for use of the radio remote control system operation lever Set the desired value using or on the adjustment switch 2 12A Fig 4 46 NOTICE For example if set to 60 the acceleration value will be 60 and not 100 w...

Page 82: ... in red and an alarm buzzer sounds at the same time Fig 4 47 1 Consumables Display 2 Abnormality Display abnormality detected 3 Error Code Display 4 Slew Position Abnormality 5 Slew Detection Abnormality 6 Battery Terminal Check Display 7 Warming Up Display 8 Emergency Stop Display 9 Lever Neutral Warning Display 10 Emergency Stop Reset Guide Display 11 Emergency Stop Reset Switch If warning and o...

Page 83: ...related indications are displayed For more information on error codes see Error Codes on page 5 62 and take corrective action Slew Position Abnormality A warning is displayed if the slewing angle is offset If a warning appears see Slewing Position Calibration on page 5 63 and calibrate the slewing angle Fig 4 49 Slew Detection Abnormality A warning is displayed if an abnormality occurs when using ...

Page 84: ...mergency stop switch has been pressed on the radio remote control unit It disappears once communication is established with the radio remote control unit To operate the levers on the machine while the guide is displayed press the emergency stop reset switch at the bottom right of the monitor Fig 4 54 Lever Neutral Warning Display Displayed when a lever input was made after resetting the emergency ...

Page 85: ... operation Sufficient warm up operation is necessary when starting in cold temperatures Insufficient warm up operation will slow down the movement response of the travelling system or crane system to the operation levers resulting in machine damage or personal injury NOTICE Hydraulic oil operating temperature is 50 to 80 C When operating at low temperatures increase the temperature of the hydrauli...

Page 86: ...operly installed on the machine Do not operate or carelessly contact the travelling levers while starting or operating the machine Only operate the correct controls per the operation Always turn the Starter Switch to the OFF position after operation is complete and remove the key from the switch Keep the key in your possession when the machine is not operating CAUTION Only use the starting procedu...

Page 87: ... travel lever while unlocking the l ever to enable operation of the outriggers and the crane Fig 4 59 2 Set the outriggers See OUTRIGGER SETTING on page 4 43 3 Loosen the wire rope which has been locking the hook block before disengaging the hook block from its hanger See Before Crane Operation on page 4 61 4 Use the motor speed adjuster switch on the monitor to increment the display to the halfwa...

Page 88: ...OPPING Normal Stopping NOTICE Check that the radio remote control is turned off Check that the machine has not been stopped by the emergency stop switch Leaving the machine in this state will drain the battery 1 Turn the Starter Switch key to OFF to stop the machine Fig 4 65 2 Remove the Starter Switch key Emergency Stopping The Emergency Stop Switch EMO is used to stop the machine in the event of...

Page 89: ...ithin the travelling path of the machine or around the working site area before travelling Sound the horn as a warning before moving the machine Be sure people do not enter the travelling path or the working area while the machine is travelling Fig 4 68 When reversing the machine pay attention to your footing Decrease machine to a slow speed and operate the machine carefully so that you will not l...

Page 90: ...Fig 4 71 Do not start the machine if the travel levers are not in the NEUTRAL position when the machine is on a slope Always position the travel levers in NEUTRAL when starting the machine on a slope WARNING The following safety messages address a potential Tip Hazard while the machine is travelling over obstacles Avoid driving over obstacles and uneven unstable or rough terrain When these obstruc...

Page 91: ...NOTICE Always follow all local laws and regulations when travelling on public roads Directional Controls Before travelling the machine perform the following Retract and fully lower the boom Secure the hook block to the STOW position Stow and secure the outriggers making sure each position pin is locked To travel the machine Move the travel lever to the TRAVEL position The left and right travelling...

Page 92: ...n Spin Turns WARNING Collision Hazard Sudden steering or unnecessary spin turns at high speed can damage the rubber tracks and hydraulic devices resulting in a collision with other equipment or people Only make spin turns at a safe controlled speed NOTICE Stop the machine then adjust the motor speed to low before performing spin turns Operate the left and right levers in the opposite directions Le...

Page 93: ... Movement Hazard Avoid sudden stops Always provide adequate stopping distance when possible WARNING Collision Hazard Do not park on a street without providing adequate safety precautions Always provide safety precautions such as clearly placed flags protection barriers lighting and caution notices that do not interfere with traffic Avoid parking the machine on unstable ground Always park the machi...

Page 94: ...Section 4 PARKING Mini Crawler Crane M A E D A 4 34 9 2020 MC285CB 3 2 Always park on solid level ground If you must park on a slope place a chock in front of the tracks Fig 4 82 ...

Page 95: ...ion Check if the machine is in the BOOM STOWING position Fully retract the boom Boom horizontal stowing position Boom slewing stowing position Boom Stowing Light on the monitor green on Working Status Lamp red flashes Angle Setting Lights and Ground Set Up Lights on the monitor red flash Outrigger interlock device All the outrigger operations stop if the Boom Stowing Light does not turn on Outrigg...

Page 96: ... Standard Operation Sequence Machine Status Display and Warning Activation of Safety Devices Stow the outriggers 1 Set and stow the outriggers Ground Set Up Lights red on the monitor flash Working Status Lamp red flashes Crane interlock device If any of the Angle Setting Lights and Ground Set Up Lights total of eight flash red all the crane operations stop 2 Retract and stow the outriggers Retract...

Page 97: ...3 4 37 OUTRIGGER COMPONENTS Fig 4 83 1 Linkage Bracket 2 Outrigger Cylinder 3 Rotary 4 Rotary Positioning Pin 5 Outrigger Base Box 6 Stay of damper type 7 Outrigger Top Positioning Pin 8 Inner Box Positioning Pin 9 Outrigger Top Box 10 Inner Box 11 Pad 12 Snap Pin 13 Snap Pin ...

Page 98: ...S Fig 4 84 1 Outrigger Ground Set Up Light 1 2 Outrigger Ground Set Up Light 2 3 Outrigger Ground Set Up Light 3 4 Outrigger Ground Set Up Light 4 5 Outrigger Angle Setting Light 1 6 Outrigger Angle Setting Light 2 7 Outrigger Angle Setting Light 3 8 Outrigger Angle Setting Light 4 9 Boom Stowing Light ...

Page 99: ... ground The conditions of the outrigger pad are detected by the detection switch 1 at the bottom of the outrigger cylinder There is a detection switch at the bottom of all four outrigger cylinders Fig 4 86 Outrigger Angle Setting Lights 1 to 4 These turn on or off to indicate the outrigger status The lights turn off when the outriggers are stowed illuminate in green when the outriggers are fully e...

Page 100: ...wed once both detection positions are simultaneously detected and the Boom Stowing Light illuminates in green Fig 4 89 Boom Slewing Stowage Position Determined as stowed once the boom stops at the slewing stowage position Boom movement is detected by interactions between the depression 2 on the post slewing side and the detector switch 1 on the travel undercarriage fixed side Fig 4 90 Boom Fully L...

Page 101: ...tch 1 4 Outrigger 2 Ground Set Up Switch 1 5 Outrigger 3 Stowage Switch 1 6 Outrigger 3 Ground Set Up Switch 1 7 Outrigger 4 Stowage Switch 1 8 Outrigger 4 Ground Set Up Switch 1 9 Outrigger 1 and 4 Stowage Switch 1 10 Outrigger 1 and 4 Ground Set Up Switch 1 11 Outrigger 2 and 3 Stowage Switch 1 12 Outrigger 2 and 3 Ground Set Up Switch 1 13 Outrigger Combined Stowage Switch 1 14 Outrigger Combin...

Page 102: ...outriggers to be brought into contact with the ground Fig 4 94 34BOutrigger 1 and 4 2 and 3 Stowage Switches Allow front and rear outriggers to be stowed Front outrigger 1 and 4 simultaneous operation Rear outrigger 2 and 3 simultaneous operation Fig 4 95 35BOutrigger 1 and 4 2 and 3 Ground Set Up Switches Allows front and rear outriggers to be brought into contact with the ground Front outrigger ...

Page 103: ...l operation and combined operation OUTRIGGER SETTING Support Plates When used on soft ground place a single plate of sufficient size with sufficient strength under the pad of each outrigger to add support and protect the ground Fig 4 100 Fig 4 101 To prevent an unstable condition never set the outriggers near a road shoulder If the ground is not stable or the outriggers sink during operation stop ...

Page 104: ...y from the machine when placing the outriggers Do not allow people around the working area until the outriggers are placed Setting Outriggers Normal Outrigger State This machine has four outriggers The method for setting up outrigger 3 is described below 3 The same applies to the other three outriggers as well Fig 4 105 Procedures When Stopping the Machine WARNING When placing the outriggers to ma...

Page 105: ...ers by inserting the pin into any hole other than the one with a sticker Extended to maximum at the pin of the coupled bracket operate the machine in accordance with the rated total load for the Other than MAX outrigger position in RATED TOTAL LOAD CHARTS on page 3 13 7 Remove the snap pin 13 at the end of the position pin 8 of the top box 9 and pull out the position pin Fig 4 110 8 Pull out the i...

Page 106: ... outrigger used Fig 4 115 5 Press one or two Outrigger Ground Set Up Switches The outrigger cylinders will extend Release the switch es once the outrigger pads make contact with the ground Operate the other switches in the same way until all four outrigger pads are in contact with the ground 6 Once all outrigger pads are in contact with the ground press the Outrigger Ground Set Up Switches once ag...

Page 107: ... the standard angle outrigger state Even when all four outriggers are extended at the standard angles the situation in which the Outrigger Angle Setting Lights are not all lit in green or yellow is referred to as Multi outrigger state Fig 4 117 Fig 4 118 NOTICE For more information on operations other than the outrigger rotary positions see Setting Outriggers Normal Outrigger State on page 4 44 Th...

Page 108: ...ed for the Other than MAX outrigger position in RATED TOTAL LOAD CHARTS on page 3 14 when the outriggers are not fully extended For proper operation of the machine do not exceed these guidelines WARNING Tip Hazard Always rotate a hoisted load slowly in the 360 degree slewing position using a short working radius and with the motor at low speed regardless of the load size The machine could become u...

Page 109: ...utriggers are set at the Other than MAX outrigger position on uneven ground do not use the machine Fig 4 125 The Other than MAX outrigger position occurs when 1 The outrigger is set with the position pin position 60 degrees front 45 degrees back 2 The inner box of each outrigger is extended other than maximum 3 All outriggers are placed on a level surface 4 Approximately 80 mm is assured for clear...

Page 110: ...ibited zones diagonally shaded zones in the illustration below causes the machine to tip over leading to serious personal injury Never perform crane operation in the shaded zones below At least two of the adjacent outriggers must always be set at the standard angle and must be set to MAX extension Slewing restrictions always apply when crane is in Multi Angle outrigger state which means one or two...

Page 111: ...360 slewing 5 Within the allowed slewing radius Rated Total Load Capacities RTL are either MAX or OTHER THAN MAX based on the corresponding outriggers posture extension position 2 Outrigger States STANDARD STATE 2 POSSIBLE OUTRIGGER COMBINATIONS 1 ALL 4 OUTRIGGERS at max posture identical 2 ALL 4 OUTRIGGERS at other than max posture identical MULTI STATE 26 POSSIBLE OUTRIGGER COMBINATIONS 1 10 COM...

Page 112: ... Max Other than Max Multi Angle 20 to 160 60 to 115 20 to 60 115 to 160 Max Max Multi Angle Other than Max 20 to 160 60 to 115 20 to 60 115 to 160 Max Max Multi Angle Multi Angle 20 to 160 60 to 115 20 to 60 115 to 160 Max Max Max Multi Angle 290 to 160 335 to 115 115 to 160 290 to 335 Multi Angle Max Max Other than Max 215 to 70 335 to 25 25 to 70 215 to 335 Other than Max Max Max Multi Angle 290...

Page 113: ... be operated if the boom is not stowed completely 1 Start the machine Operate the motor at low speed after starting 2 Push in the travel lever while unlocking the lever to enable operation of the outriggers Fig 4 130 3 Select outrigger mode on the Home screen Fig 4 131 4 Check the outrigger number on the monitor against the actual outrigger number to determine the outrigger used 5 Push the Outrigg...

Page 114: ...d retain it with the snap pin 13 at its end Fig 4 135 4 After removing the snap pin 12 at the end of the position pin 7 of the linkage bracket 1 pull out the position pin Fig 4 136 5 Lower the top box 9 and align the hole of the top box with the innermost hole position of the linkage bracket 6 Insert the position pin 7 into the innermost hole of the linkage bracket 1 and retain it with the snap pi...

Page 115: ... knobs at the top of the monitor case and open the cover toward you Fig 4 140 2 Switch the Moment Limiter Override Switch to ON Fig 4 141 3 Turn on the Emergency Outrigger Operation Selection switch inside the monitor case Fig 4 142 NOTICE The switch returns to the OFF position when released Hold the switch at the ON position when the outriggers are being operated 4 Operate the crane operation lev...

Page 116: ...p feature Immediately repair any problems with the auto stop feature before operating the crane Review understand and follow the following operation sequences warning alarms and stopping procedures when operating the machine The following table shows the display and warning issued and the resulting action of the safety devices when the machine is used under normal conditions Standard operation seq...

Page 117: ...base of each outrigger cylinder which detects whether the outrigger is in contact with the ground based on the load on the cylinder If an abnormality occurs during operation check the detection switch on the cylinder base Crane Interlock 2 If 2 or more adjacent outriggers are lifted is detected while operating the crane crane operations will be partially restricted preventing operations other than...

Page 118: ...ering operations stop When one of the outriggers goes up in the air during crane operation Ground Set Up Lights red on the monitor flash When two or more adjacent outriggers lift up during crane operation Ground Set Up Lights red on the monitor flash Boom extending hook raising boom raising boom lowering and slewing operations stop When the hook is raised excessively Alarm buzzer sounds continuous...

Page 119: ...g safety messages address a potential Crush Hazard while operating the crane and boom Verify there are no people within the working radius of the crane and boom before operating the crane and boom Blow the horn to signal operations are to begin Be sure people do not enter the area inside working radius while the crane and boom are operating Take into consideration that the working radius increases...

Page 120: ...operating the crane or boom Do not work if visually impaired due to worksite location or weather Always use adequate lighting when working in dark areas WARNING The following safety messages address a potential Tip Hazard while operating the crane or boom Always rotate a hoisted load slowly in the 360 degree slewing position using a short working radius and with the motor at low speed regardless o...

Page 121: ...ng operations before operating the crane 1 Verify that the Moment Limiter Override Switch is at the OFF position The safety device operation will not stop if at the ON position Fig 4 151 NOTICE If the Moment Limiter Override Switch is ON Override the Working Status Lamp will flash in red and an alarm buzzer will sound intermittently 2 Switch on the Home screen on the monitor NOTICE The crane canno...

Page 122: ...on WARNING Tip Hazard Do not operate the crane at high speeds Decrease the speed at the beginning or near the end of an operation Change the speed to low or high according to the load NOTICE The motor speed can be adjusted by using the travelling operation unit when travelling by using the monitor during crane and outrigger operation and by using the radio remote control transmitter when operating...

Page 123: ...of the hook to stabilise the load while hoisting Be sure the load is stable before continuing to hoist the load Do not hoist more than one load at a time Even if the load is within the rated total load limit multiple loads may be unstable once they are hoisted Only hoist one load at a time and be sure it does not exceed the rated total load limit Always hoist a load in the shortest length possible...

Page 124: ...he winch drum The wire rope cable must wind uniformly onto the winch drum to prevent damage to the wire rope cable WARNING Entanglement Hazard Always keep the hook block away from people when it is not in use Keep the hook block wound up and away from people if it is not in use WARNING Tip Hazard Never allow a hoisted load to contact an outrigger Always use caution to prevent the hoisted load from...

Page 125: ...the lever may cause the load to sway WARNING Sudden Movement Hazard Verify the weight of the load before extending the boom As the boom extends the working radius increases and the rated total load decreases Do not pull a load sideways or draw it in while telescoping the boom These conditions may cause unreasonable force on the machine and uncontrollable movement of the load WARNING Unsafe Operati...

Page 126: ...machine will not stop automatically if the crane is overloaded during crane slewing operation WARNING The following safety messages address a potential Sudden Movement Hazard while performing slewing operations Do not pull a load sideways or draw it in during crane slewing operation These conditions may cause unreasonable force on the machine and uncontrollable movement of the load Fig 4 164 Alway...

Page 127: ...hook block to slew and interfere with peripheral devices while stowing the crane Keep the hook block from slewing while stowing the crane Do not allow the hook block to contact the boom while stowing the crane While retracting the boom or lowering the boom the hook block could contact the boom Move the winch lever slowly to prevent the hook block from contacting the crane while performing these op...

Page 128: ... by adjusting the slewing angle position and boom angle Fig 4 169 Steady green Boom stowed Steady yellow Only stowed at slewing position Flashing red Not yet stowed in slewing position or boom fully lowered position 7 Adjust the hook position by raising or lowering it Engage the hook portion of the hook block 4 on the hook hanger 3 Once the hook block 4 engages the hook hanger 3 wind up until it i...

Page 129: ...king Status Lamp red Warning Light for load factor of 100 or more B Working Status Lamp yellow Pre warning Light for load factor of 90 to 100 C Working Status Lamp green Working Light for load factor of less than 90 6 Boom Length Sensor left side 7 Boom Angle Sensor left side of boom rear edge 8 Pressure Sensor boom cylinder two 9 Over Winding Detector 10 Over Unwinding Stop Device 11 Outrigger Po...

Page 130: ...ION The following safety messages address a potential Equipment Damage Hazard concerning the moment limiter Avoid direct sunlight Do not allow the temperature of the moment limiter body to exceed the specified range Avoid locations with strong acids or alkaline Avoid impact to the moment limiter body During Setup NOTICE The moment limiter calculates the moments assuming the machine is level If you...

Page 131: ...calculated in the current figure Then it issues an alarm if the result is as follows Actual load Rated total load 90 to 100 If the calculation result is Actual load Rated total load 100 or more the moment limiter issues an alarm and at the same time automatically stops the boom operation Overload Alarm A Safety area Actual Load is less than 90 of Rated Total Load The green colour of the Working St...

Page 132: ...atus Lamp flashes Operation of the applicable crane motion stops automatically NOTICE The alarm buzzer and working status lamp indications may differ depending on the usage conditions Fig 4 176 Over Winding Detector CAUTION When hoisting the hook be careful of clearance between the hook and boom When the boom is extended the hook is also hoisted Perform boom extension operation while always checki...

Page 133: ...d by the boom angle sensor boom length sensor pressure sensor or when a circuit is opened the moment limiter displays an error code on the monitor to notify the operator of the error Stop using the crane immediately if an error code is displayed See Error Codes on page 5 62 to resolve the problem Working status lamp states Colour Status States All colours Flashing For three seconds after starting ...

Page 134: ...actor of less than 90 Working Status Lamp green Switch the motor speed to low speed and operate the crane with caution if the moment limiter load factor is 90 or higher WARNING Tip Hazard Always operate the motor at low speed when the moment limiter load factor is 90 or higher Do not operate the motor at any speed other than low Operating at any motor speed other than low may cause an unstable ope...

Page 135: ...round Fig 4 183 b Retract the boom Fig 4 184 5 Recovery operation using boom raising If the boom was stopped automatically note that you can raise it only while depressing the Boom Lift Bypass Switch Fig 4 185 DANGER Use this switch only when the boom has stopped automatically after entering the overload area during boom lowering or telescoping Do not use this switch to lift loads off the ground u...

Page 136: ...Number of Falls Display 11 Over Winding Display 12 Over Unwinding Stop Display 13 Lifting Height Upper Limit Switch 14 Boom Angle Upper Limit Lower Limit Switch 15 Working Radius Upper Limit Switch 16 Slewing Angle Limit Switch 17 Setting Check Cancelling Switch 18 Lifting Height Upper Limit Display 19 Boom Angle Upper Limit Display 20 Boom Angle Lower Limit Display 21 Working Radius Upper Limit D...

Page 137: ...on a numerical value of actual load display changes when the boom is raised and lowered Although the numerical value of the actual load changes on a higher side when boom raising operation is performed this is not a fault When the crane stops the numerical value of actual load display changes if there is slewing of load Rated Total Load Display The rated total load i e total weight of hook hoistin...

Page 138: ...the hook has been raised to the over winding position detection Working Radius Display The current working radius is continually displayed during crane operations The working radius refers to the horizontal distance from the centre of slewing of the crane to the centre of the hook Fig 4 193 Slewing Angle Display Displays the current slew angle when the crane is being operated The slew angle refers...

Page 139: ...per Limit Display Boom Angle Upper Limit Lower Limit Switch Boom Angle Upper Limit Lower Limit Switch Working Radius Upper Limit Display Working Radius Upper Limit Switch Slewing Angle Limit Switch Clockwise Right Slewing Angle Limit Display Counterclockwise Left Slewing Angle Limit Display Operating limits can be set in cases in which the operating range is restricted by moving the boom to the ac...

Page 140: ...lways check the hook block height when extending the boom When the hook is overwound raised or the boom is extended Fig 4 203 1 Hook Block 2 Over Winding Detector 3 Weight 4 Boom If the hook block 1 is raised or the boom 4 extended the over winding detector 2 intermittently activates the alarm buzzer to warn the operator of overwinding if the hook block approaches the end of the boom and pushes up...

Page 141: ... Limit Value of Lifting Height While the lifting height limit is imposed by detecting the boom tip height the monitor displays the maximum height when the hook is hoisted up to the over winding detected position When the boom is in the prediction zone or upper limit stop position in a condition in which the hook height is set the monitor display flashes in orange Fig 4 204 Setup Set the boom to th...

Page 142: ...n The set value is memorised when the starter switch is turned to the OFF position Cancel Press the switch in a condition in which the upper limit value or lower limit value is set The orange display section can be selected in yellow Each time the switch is pressed the selection changes Select the yellow indicator for the direction to be cleared and hold the switch The monitor display changes to t...

Page 143: ... starter switch is turned to the OFF position Cancel Press the switch in a condition in which the slewing angle is set The orange display section can be selected in yellow Each time the switch is pressed the selection changes Select the yellow indicator for the direction to be cleared and hold down the switch The monitor display changes to blue indicating that the slewing angle limit setting has b...

Page 144: ...start the machine as normal and the Moment Limiter system will commence with normal start up sequence BATTERY HANDLING DANGER The following points must be strictly observed to prevent fire Keep the battery away from open flames Do not heat or throw the battery onto a fire Do not leave the battery in a hot location for extended periods Do not charge the battery except using the specified voltage Th...

Page 145: ...ating smoke generation fire or electric shock Cold or hot locations at temperatures outside the operating temperature range of 20 C to 40 C Locations where the humidity exceeds 85 RH Locations where condensation may occur due to sudden temperature fluctuations Locations where the battery may be splashed with water or left standing in water Locations subject to strong vibration or impact Dusty loca...

Page 146: ... cleaning when cleaning the machine Leaving the machine in an emergency stopped state will drain the battery Be sure to turn the starter switch to OFF when the machine is stopped for extended periods Take care when using the battery at elevations above 1 000 m as its cooling performance will be reduced Action When the Battery Is Drained DANGER If the machine has just come to a stop due to low batt...

Page 147: ...e OFF position Fig 4 210 1 User Mode Switch 2 Rotary Lamp ON OFF Selection User Mode Switch Used for user settings Press the switch to switch to user mode For more information on user mode see User Mode on page 4 17 Rotary Lamp ON OFF Selection Allows the flashing working status lamp to be switched on or off while the battery is being charged ON The working status lamp flashes OFF The working stat...

Page 148: ...harging starts Once the battery is confirmed as charged on the monitor turn the starter switch to OFF Turning the starter switch to OFF automatically turns off the power once charging is complete The charge level can also be checked during charging using the working status lamp Flashing green 96 to 100 charge Flashing yellow 80 to 95 charge Flashing red 0 to 79 charge The working status lamp flash...

Page 149: ...ny radio remote control system operating procedures see Section 2 SAFETY Upon using the radio remote control system also see HBC Operation Manual General Modification WARNING Electrical Shock Hazard Do not dissemble or modify the transmitter receiver or accessories Damage to the components may result in electrical failure Fig 4 217 Holding Wear the waist belt and operate the control levers and but...

Page 150: ...nsmitter Only use a damp cloth with detergent to clean the transmitter Damage to the transmitter may result if water is allowed to enter it resulting in internal component damage and or electrical failure Foreign Objects Do not put metals flammables or water in the battery storage section of the transmitter or the inside of the opening of the battery charger Do not connect the battery storage sect...

Page 151: ...n the following conditions as this may cause the transmitter enclosure to deform discolor or damage internal components resulting in damage or malfunction Extremely low temperature 20 C or below or direct cold air Direct sunlight Near warm air outlets of vehicles Near heating system High humidity Operation Environment Avoid using the transmitter in a place where there is danger of explosion Fig 4 ...

Page 152: ...eld Disconnect the electric wiring connection section with the receiver Otherwise the electric system of the receiver will be destroyed Operation Precautions Pre Start Inspection Before operation perform the pre start inspection as specified for this machine Serious injury or death can occur if these inspections are neglected Any failure detected during inspection must be corrected immediately Mac...

Page 153: ...ers for crane operation and ensure crane functions correctly See RATED TOTAL LOAD CHARTS on page 3 10 for proper loading of crane Always operate the levers on the transmitter slowly when hoisting a load Do not perform multiple operations simultaneously using the radio control as only one side may operate which is extremely dangerous Never let go of the transmitter when the power is turned on Alway...

Page 154: ...ntenna 4 etc The receiver receives operation signals from the transmitter and controls the crane Fig 4 231 Transmitter Accessories Waist belt Waist belt to be worn when using transmitter to prevent accidental dropping of the unit during operation Fig 4 232 Battery charger This is a charger to charge the battery for the transmitter Fig 4 233 Functions of Radio Remote Control System The acceleration...

Page 155: ... 4 Horn Switch 5 Boom Lift Bypass Switch 6 Micro Speed Switch 7 Emergency Stop EMO Transmitter Power OFF Switch 8 Cable Connection Port Not used 9 No 1 Outrigger Slewing Operation Lever 10 No 2 Outrigger Telescoping Operation Lever 11 No 3 Outrigger Winch Operation Lever 12 No 4 Outrigger Lifting and Lowering Operation Lever 13 Operation Mode Selector Switch L1 LED Light Front L2 LED Light Control...

Page 156: ...Switch The boom can be lifted while this switch is pressed following an overload stop Micro Speed Switch Used to operate the crane at slow speed when operating the crane Emergency Stop EMO Transmitter Power OFF Switch Use this switch to bring the machine to an emergency stop In addition this switch can be used to turn off the radio remote control system ON Turns off transmitter power and shuts dow...

Page 157: ...ion on page 4 109 For more information on crane operations see Crane Operation on page 4 112 Operation Mode Selector Switch Used to switch between Outrigger mode and Crane mode Fig 4 240 Outrigger Allows outriggers to be operated using levers Crane Allows the crane to be operated using levers LED Light Front LED Light Control Panel Turns on the LED lights to illuminate the surrounding area For mor...

Page 158: ...Section 4 RADIO REMOTE CONTROL SYSTEM COMPONENTS Mini Crawler Crane M A E D A 4 98 9 2020 MC285CB 3 Transmitter Display Components Fig 4 241 ...

Page 159: ...r the lever is moved The right display varies as follows for each of the screens Fig 4 242 Crane Screen The crane symbol is displayed The rated total load and actual load are also displayed RTL Indicates the rated total load AL Indicates the actual load Outrigger Screen The outrigger symbol is displayed No particular status indications are displayed here Menu Screen Press the Display Operation Swi...

Page 160: ...Section 4 RADIO REMOTE CONTROL SYSTEM COMPONENTS Mini Crawler Crane M A E D A 4 100 9 2020 MC285CB 3 Radio Remote control menu list Fig 4 245 ...

Page 161: ...or Icon Battery Icon Blinks in green when the power supply is in normal condition Battery Status Icon Indicates the remaining battery levels as follows Fig 4 247 Radio Wave Status Bar The intensity of radio waves are as follows Fig 4 248 Error Icon An icon appears when an error is detected Detailed information about the error icons can be checked from the radio remote control menu in the configura...

Page 162: ...ni Crawler Crane M A E D A 4 102 9 2020 MC285CB 3 Receiver Components Fig 4 249 R1 Control Box R2 Monitor LED R3 Connector Connection Port R4 Antenna Control Box The control box contains the receiver and control devices Do not dismantle the control box ...

Page 163: ...t Wiring connector to allow communication with the controller on the machine The wire must be kept connected WARNING Before performing electric welding due to repair work for the machine body or other reasons be sure to disconnect the wire Failure to do so may result in a machine failure caused by burn damage to the control box due to high voltage applied to it Antenna Antenna that allows communic...

Page 164: ...Hazard Do not operate the transmitter if its case the rubber covers operation levers or operation switches are damaged Damage to these items may cause internal component damage and or electrical failure Check the movement of each operation lever and operation switch for smooth operation and free movement and return to the NEUTRAL position when released Repair any lever or switch immediately before...

Page 165: ...tter power is ON 1 Turn the Starter Switch ON 2 Push the Horn Switch and confirm that the horn sounds Fig 4 251 3 Operate the control levers to check that the motor operates according to the lever movements Checking Machine Stop Operation 1 Press the Emergency Stop EMO Transmitter Power OFF Switch while the machine runs and confirm that the machine stops Fig 4 252 Checking Outrigger Operation Veri...

Page 166: ...selector switch on the transmitter to Crane Fig 4 255 2 Move the operation lever 9 to the clockwise right and counterclockwise left side and verify that the result corresponds to the lever direction Slew continuously through at least 360 and verify that operations are normal Fig 4 256 3 Move the operation lever 10 to the Extend and Retract side and check that the boom follows the lever operation F...

Page 167: ...r electrical failure WARNING Sudden Movement Hazard Do not use the transmitter if its case is damaged A damaged transmitter case may cause operator error WARNING Sudden Movement Hazard Do not use both the remote control and manual controls to operate the crane at the same time Only one method of control must be used at a time to operate the crane Before operating the radio remote control system ve...

Page 168: ...the Transmitter Power Switch once again with power to the radio remote control system turned on CAUTION You must press the Transmitter Power Switch a total of three times to enable crane operations using the radio remote control system Starting Stopping the Machine Starting the Machine 1 Turn the Starter Switch ON NOTICE Power will not be turned on for the receiver and the radio remote control can...

Page 169: ...erate the outriggers when the motor speed is set to low The motor must be set to low speed to properly operate the outriggers During outrigger operations position the crane to the STOW position WARNING Tip Hazard Do not operate the outriggers if the crane is not in the STOW position Only operate the outrigger when the crane is in the STOW position During outrigger operations ensure the position pi...

Page 170: ...4 271 3 Use the levers to extend all four outriggers until they are in contact with the ground Stop operating each outrigger once it makes contact with the ground Fig 4 272 Ground Set Up The outriggers are lowered to the ground Stowage The outriggers are lifted from the ground NOTICE When using the radio remote control system there are no levers to operate all four outriggers simultaneously or to ...

Page 171: ...4 276 NOTICE If the travel lever is not pushed in the interlock engages preventing outrigger operation 2 Switch the operation mode selector switch to Outrigger Fig 4 277 3 Operate the levers slowly to stow the four outriggers Operate both the front or rear operation levers at a time or operate all four levers together Fig 4 278 Ground Set Up The outriggers are lowered to the ground Stowage The out...

Page 172: ...EUTRAL position freely Levers must return to the NEUTRAL position freely for proper operation of the transmitter CAUTION Before operating the crane switch the operation mode selector switch to Crane Leaving the switch in Outrigger mode is extremely dangerous as the outriggers may operate unexpectedly 1 Position the outriggers See Outrigger Operation on page 4 109 2 Switch the operation mode select...

Page 173: ...NG When the boom is extended the working radius increases and the rated total load that can be hoisted decreases When working while extending retracting the boom pay extra attention so that the mass weight of the load at the time the boom is most lowered does not cause overloading WARNING When the boom is extended the hook block is hoisted If the over winding detector generates an alarm buzzer whi...

Page 174: ... prevent the hoisted load from hitting outriggers Move the operation lever 9 as follows Clockwise right Push the lever forward Neutral Release your hand from the lever The lever returns to the Neutral position and the slewing stops Counterclockwise left Pull the lever toward you Fig 4 283 NOTICE Adjust the crane slew speed by moving the lever forward or backward Micro Speed Mode Switch Operation P...

Page 175: ... switch returns to the original position Fig 4 287 Horn Switch Operation The horn keeps blowing while this switch is pressed and held Fig 4 288 Boom Lift Bypass Switch Operations If you cannot avoid lifting the boom while stopped automatically you can lift the boom by pressing the Boom Lift Bypass Switch Fig 4 289 WARNING Operate this switch only if the boom has stopped automatically after enterin...

Page 176: ...k stowage For more information on crane stowage operations see Crane Stowing Operation on page 4 67 Stopping Operation by Radio Remote Control System WARNING When the operation is finished be sure to press the Emergency Stop EMO Transmitter Power OFF Switch on the transmitter to turn OFF the power WARNING On no occasion except for crane operations must the power of the transmitter be turned ON Thi...

Page 177: ... sunlight high temperatures and high humidity HANDLING TRANSMITTER BATTERY NOTICE The battery used for the transmitter is an exclusive battery Replacement Timing of Battery If the battery runs low recharge the battery or replace the battery with a charged battery If the battery is not replaced the transmitter will stop in a few minutes Fig 4 294 Replacement Method of Battery Replace the battery of...

Page 178: ...with an object during charging Pull the battery charger out of the power supply when not in use If any damage is found on the battery charger body or its cord stop using it at once Do not modify or change the battery charger or cord CAUTION The battery capacity depends on the number of years used and ambient temperature The capacity decreases when the battery becomes old The battery capacity decre...

Page 179: ...ery B2 put it into place in the charger case B5 Fig 4 299 2 Connect the battery charger B1 to the cord B3 and insert the cord plug into the power outlet 3 The battery status LED indicator B4 on the charger starts blinking to indicate the charging has started Fig 4 300 4 When the battery becomes fully charged the LED indicator B4 is lit in green 5 After charging is completed disconnect the cord plu...

Page 180: ... correctly and there is a risk of serious injury through the machine becoming damaged or overturning There may be no display for the searcher hook selector switch due to retrofit etc of the searcher hook In this case as work will be necessary to set up the moment limiter to display the searcher hook selector switch on the monitor please contact us or our sales service agency If used with no displa...

Page 181: ...85CB 3 4 121 SEARCHER HOOK COMPONENTS OPTION Fig 4 301 1 E Boom 2 Bracket1 3 Bracket 2 4 Position pin 5 Lynch pin 6 pin 7 Hexagonal bolt with washer 8 Hexagonal bolt with washer M12 35L strength 10 9 9 Nut M12 grade 1 strength 10 10 High tension washer M12 26 3 2t 11 Shackle 12 Hook ...

Page 182: ...tion see Home Screen on page 4 12 Boom Lift Bypass Switch If it becomes necessary to raise the boom while automatically stopped the boom can be raised only while the Boom Lift Bypass Switch is depressed Fig 4 303 Searcher Hook Position Display The display will change depending on the searcher hook position setting For more information on the position and display details see Moment Limiter Settings...

Page 183: ... and operations that differ from normal use when using a searcher hook For more information on indications and switch operations not described in this section see User Mode on page 4 17 Hook Hanging Number Selection Searcher Hook Position Selection Used when switching the searcher hook position setting For more information on the actual position and position switching see Moment Limiter Settings o...

Page 184: ...s to main boom and install bracket 2 using M8 bolts with washers strength 10 9 to main boom Using torque wrench tighten M12 bolts at 93 N m 14 N m and M8 bolts at 27 N m 8 N m Fig 4 308 DANGER Crash Hazard Make sure to torque searcher hook mounting plate bolts to the designated tightening torque To install searcher hook always use new genuine Maeda bolts nuts and washers 3 Remove the lynch pin 4 f...

Page 185: ... of 50 when the E boom position is SH1 or a boom angle of 75 when the E boom position is SH2 Fig 4 314 8 Insert the position pin 8 through the hole of bracket and secure with lynch pin 9 to the tip of position pin Fig 4 315 DANGER Always secure the position pin with the lynch pin If the position pin falls out during operations serious injury or damage to the machine may result 9 Adjust the positio...

Page 186: ... boom stops automatically on entering the overload area while being lowered or extended retract the boom and move to a safe area before lowering the boom to lower the load If it becomes necessary to raise the boom while automatically stopped the boom can be raised only while the Boom Lift Bypass Switch is depressed DANGER Use the Boom Lift Bypass Switch only when the boom has stopped automatically...

Page 187: ... for additional information on transporting the machine NOTICE Always follow all local laws and regulations when trailering the machine on public roads NOTICE Always position the machine in travelling position when loading unloading the machine See TRAVELLING POSITION on page 4 28 During travelling position setup securely insert the four position pins to the outrigger pivot base before loading or ...

Page 188: ...efore changing direction Loading Unloading Procedure WARNING Overturn Hazard Always load the machine moving backward onto the trailer Moving forward onto the trailer could result in an unstable condition 1 Place wheel blocks under the wheels of the trailer to secure the trailer Fig 4 321 2 Secure the ramp planks to the trailer and align the machine with the ramp planks and trailer 3 Verify the two...

Page 189: ... as when optional equipment is installed See the nameplate attached to the machine for weight specifications The total machine weight is for a standard machine configuration 1995 kg Recommended Hoisting Attachments Equipment with an operating capacity sufficient for the total weight of the machine Hoisting Procedure NOTICE Ensure the machine is on solid flat ground before hoisting Lift the machine...

Page 190: ...Section 4 HOISTING Mini Crawler Crane M A E D A 4 130 9 2020 MC285CB 3 This Page Intentionally Left Blank ...

Page 191: ...9 2020 MC285CB 3 5 1 Section 5 MAINTENANCE AND INSPECTION ...

Page 192: ... in this manual NOTICE Check hour meters daily for maintenance items that have reached the obligatory maintenance period Parts Always use Maeda genuine parts as specified in the parts catalogue Cleaning Parts Clean parts with a noncombustible cleaning agent Be sure to clean mating surfaces after removing a part to which an O ring or gasket is attached When you replace the part always use a new O r...

Page 193: ...machine Ground the machine within 1 m of the welding point Disconnect the monitor and controller connectors Disconnect the battery Make sure O rings seals or bearings are not present between the welding point and the grounding point Handling and Service of Electrical Parts NOTICE Never remove and disassemble electrical equipment from the machine NOTICE Keep water rain away from electrical parts NO...

Page 194: ...e level gauge Overfilling may cause oil to gush from the tank during machine operation For oil type and usage specifications see LUBRICATING OIL on page 5 7 Secure the hydraulic oil fill and drain plugs after oil replacement Use seal tape on the threads to prevent leaks Place the machine on a flat level surface in the TRAVEL position when replacing or checking the oil Do not start the machine unti...

Page 195: ...er tracks a minimum of 80 mm off the ground 5 Place square blocks underneath the tracks at both the front and back of machine 6 Use the outriggers and slowly lower the tracks until they rest firmly on the blocks Fig 5 1 MACHINE BREAK IN Perform the break in procedures for the first 250 hours of operation NOTICE The life of the machine can be shortened if break in procedures are not performed or ar...

Page 196: ...ice as needed CONSUMABLES Consumables such as filter elements and wire ropes are to be replaced at designated periodic maintenance intervals or prior to reaching their wear limit Proper replacement of consumables ensures increased machine performance and efficiency Always use Maeda genuine parts for part replacement See the Maeda genuine parts book for part numbers when ordering parts List of Cons...

Page 197: ...TING OIL 9 2020 MC285CB 3 5 7 LUBRICATING OIL Lubricating oil usage varies with ambient temperature changes The machine is shipped with ISO VG32 hydraulic oil When replenishing with oil of a different grade be sure to replace all of the oil Fig 5 2 ...

Page 198: ...spect to the width across the flat b of the bolt or nut Fig 5 3 Bolts Marked with 8 8 Strength Classification on Head Nominal Size Mark a Width Across Flat Mark b Target Value Tolerance mm mm N m kgf m N m kgf m 6 10 7 8 0 80 6 8 9 0 0 70 0 92 8 13 19 0 1 95 16 5 21 9 1 70 2 24 10 17 37 5 3 85 32 6 43 1 3 35 4 43 12 19 65 5 6 70 57 0 75 3 5 85 7 70 14 22 104 10 6 90 4 120 9 2 12 2 16 24 163 16 6 1...

Page 199: ... 661 895 67 4 91 2 27 41 1130 116 961 1300 98 6 133 30 46 1540 158 1310 1770 134 182 33 50 2100 214 1790 2410 182 246 36 55 2700 275 2300 3100 234 316 Bolts Marked with 12 9 Strength Classification on Head Nominal Size Mark a Width Across Flat Mark b Target Value Tolerance mm mm N m kgf m N m kgf m 6 10 13 0 1 30 11 1 15 0 1 11 1 50 8 13 31 5 3 20 26 8 36 2 2 72 3 70 10 17 62 5 6 40 53 1 71 9 5 44...

Page 200: ...22 32 166 16 9 144 191 14 7 19 4 24 36 211 21 5 183 243 18 7 24 7 27 41 309 31 4 269 355 27 3 36 1 30 46 419 42 6 364 482 37 0 49 0 33 50 570 58 0 495 656 50 4 66 7 36 55 732 74 5 636 842 64 8 85 7 Hose Connector Tightening Torque Unless otherwise indicated tighten hose connectors using the torque values shown in the following table Determine the appropriate tightening torque based on the hose con...

Page 201: ... from the left side machinery cover 1 Fig 5 5 NOTICE The mounting bolts 2 are positioned with 3 at the top 3 at the rear and 1 at the front left lower side 2 Remove 2 mounting bolts 4 from the right side machinery cover 3 Fig 5 6 NOTICE The mounting bolts 4 are positioned with 1 at the rear lower side and 1 at the right lower side 3 Remove the left side machinery cover 1 4 Remove the right side ma...

Page 202: ...ows inspect and repair the cause before replacing the fuse Always use a fuse of the same type and capacity when replacing Fig 5 7 No Capacity Circuit name F1 2 A Override 2 A Spare F2 2 A Working Status Lamp FL4 0 3 sq Radio Remote control system Lower power supply FL5 0 3 sq Upper controller power supply F01 15 A Starter switch 15 A Spare F02 15 A Monitor Main controller Sub controller Motor cont...

Page 203: ...ng Motor Reduction Gearcase Oil See Check Add Slewing Motor Reduction Gearcase Oil on page 5 17 Post Start After Starting Machine Check Horn Operation See Check Horn on page 5 18 Check Working Light Operation See Check Working Light Operation on page 5 18 Check Adjust Rubber Track Tension See Check Adjust Rubber Track Tension on page 5 18 Check Rubber Tracks for Damage See Check Rubber Tracks for ...

Page 204: ...See Undercarriage on page 5 15 4 Outriggers See Outriggers on page 5 15 5 Outrigger Cylinder See Outrigger Cylinder on page 5 15 6 Post See Post on page 5 15 7 Derrick Cylinder See Derrick Cylinder on page 5 15 8 Boom See Boom on page 5 15 9 Telescope Cylinder See Telescope Cylinder on page 5 15 10 Wire Rope See Wire Rope on page 5 15 11 Over Winding Detector See Over Winding Detector on page 5 15...

Page 205: ...olts loose pipe connections or oil leakage Repair any abnormality detected Derrick Cylinder Check for loose pipe connections oil leakage wear or damage of support pins etc and repair as necessary Boom Check for cracks bent or damage sections in all areas and check wear of support pins etc and repair as necessary Check for loose mounting bolts of the support pin lock plate portion and tighten it as...

Page 206: ...ed Pre Start Inspection Check Add Hydraulic Oil Before checking or adding hydraulic oil read the maintenance precautions in Handling and Service of Hydraulic Oil and Filters on page 5 4 WARNING The following safety messages address a potential Burn Hazard Parts will still be hot immediately after stopping machine operation Do not carry out work immediately Wait until the oil has cooled 45 C or les...

Page 207: ...tor reduction gearcase oil read the maintenance precautions in Handling and Service of Gearcase Oil on page 5 3 1 Stop the machine on a level location 2 See Removing Machinery Cover on page 5 11 and remove the machinery cover 3 Remove the filler port plug F from the slewing reduction gearcase Fill with gear oil from the plug hole up to the middle of the gearcase Fig 5 12 NOTICE The height at middl...

Page 208: ...4 WARNING Sudden Movement Hazard Sound the horn before starting the machine WARNING Equipment Hazard Always repair parts or systems before operating the machine as needed Check Horn 1 Turn the Starter Switch to the ON position 2 Press the Horn Switch to verify the horn sounds If the horn does not sound the horn may be faulty or the circuit may be open Repair or replace the horn Fig 5 15 There are ...

Page 209: ... Angle Setting Light is lit in green on the monitor Fig 5 18 6 Set the outriggers to maximum extension Start the machine to extend the outriggers 7 Verify that only the Boom Stowing Light remains green on the monitor Fig 5 19 8 Confirm steps 4 to 7 for all four outriggers 9 Check the outrigger base sensors if the Outrigger Ground Set Up Light flashes in red even with the outriggers extended Check ...

Page 210: ... inner boxes Fig 5 21 Fig 5 22 2 See Starting the Machine on page 4 26 and start the machine 3 Verify that the outrigger descends smoothly when the Outrigger Extend Switch is pressed Also verify that the outrigger rises smoothly when the Outrigger Retract Switch is pressed Fig 5 23 Fig 5 24 When doing the above check for any abnormal noise generated by part of the outrigger Check for abnormal nois...

Page 211: ...sary before continuing operation 6 Verify the boom extends smoothly when the boom telescoping lever 2 is moved to EXTEND push forward Fig 5 27 7 Verify the boom retracts smoothly when the boom telescoping lever is moved to RETRACT pull toward you 8 Check for any abnormal sounds emitted by the boom or from the boom telescoping cylinder Repair as necessary before continuing operation 9 Verify the ho...

Page 212: ...mmediately Do not operate the machine until the problem has been corrected 1 Turn the Starter Switch to ON 2 Verify the Working Status Lamp flashes in red for 2 seconds and then green and yellow The subsequent lamp status will vary depending on the crane status For more information on what the various lamp states mean see Working status lamp states on page 4 73 3 Check the moment limiter display o...

Page 213: ...heck if the load detection display on the monitor lights up in green before the crane starts to move Test all operation of crane except for boom retracting If it does not light up in green even though the crane is moving it is possible that the detection limit switch has failed or is improperly adjusted In this case please contact us or our sales service agency Fig 5 32 Check Slew Origin Detection...

Page 214: ...chine units X X Hydraulic Replace hydraulic oil return filter X X Replace oil in hydraulic oil tank X X Slewing Gearcase Replace oil in slewing reduction gearcase X X Winch Gearcase Replace oil in winch reduction gearcase X X Check oil level and refill oil in winch reduction gearcase X Travel Gearcase Replace oil in travelling motor reduction gearcase X X Check Refill oil in travelling motor reduc...

Page 215: ...ntenance should be performed after the first 50 hours of operation Replace Oil in Hydraulic Oil Tank See Replace Oil in Hydraulic Oil Tank on page 5 30 Replace Hydraulic Oil Return Filter See Replace Hydraulic Oil Return Filter on page 5 29 After Initial 250 Hours of Operation The following maintenance should be performed after the first 250 hours of operation Replace Oil in Slewing Reduction Gear...

Page 216: ...ear 2 places 8 Greasing of the boom slide plate 8 places Molybdenum grease 9 Greasing of both sides and underside of the boom Each boom 10 Greasing of the boom extending and retracting wire ropes 4 places Rope oil 11 Greasing of the winch wire rope 1 piece 12 Greasing of the outrigger top box pin 4 places Lithium grease 1 With the use of the grease gun inject grease through corresponding grease pl...

Page 217: ...M A E D A Mini Crawler Crane Section 5 PERIODIC MAINTENANCE 9 2020 MC285CB 3 5 27 Fig 5 34 ...

Page 218: ...l inspection plug to stop the oil leak and securely tighten the plug after checking refilling the oil Allen key to remove a plug 5 mm 1 Place the machine on a level surface 2 Rotate the rotary of the No 4 outrigger outward so that the inspection part of the winch reduction gearcase of the post side can be seen 3 Slowly turn the winch and stop it at a position where the oil inspection plug G is vis...

Page 219: ...cooled Oil temperature 45 C or lower WARNING Oil may spray out when removing the air breather cap on the hydraulic oil tank Unscrew the cap slightly to relieve the internal pressure before removing it WARNING Tighten the cap securely after replenishing the oil If not fully tightened the cap may come loose and fall off during operation potentially causing burn injuries if hot oil spurts out CAUTION...

Page 220: ...l in Hydraulic Oil Tank WARNING Various parts are at elevated temperatures immediately after machine operation Do not change the oil immediately Wait until the oil is cooled Oil temperature 45 C or lower WARNING Oil may spray out when removing the air breather cap on the hydraulic oil tank Unscrew the cap slightly to relieve the internal pressure before removing it WARNING Tighten the cap securely...

Page 221: ... Breather Inspection on page 5 49 and securely reattach the air breather cap 1 on the oil inlet F 11 See Installing Machinery Cover on page 5 11 and install the machinery cover 12 Bleed the air according to the following sequence a Wait until the pipes and hydraulic equipment are filled with oil before starting the machine b While keeping the motor speed low slightly operate each crane control lev...

Page 222: ...4 43 to set outriggers and raise the machine about 80 mm above the ground 3 Place a drain pan directly underneath the drain plug P of the slewing reduction gearcase to receive drained oil Fig 5 43 4 Turn the drain plug slowly to avoid splashing oil on yourself and drain oil 5 Check the drained oil and if it contains an unacceptable amount of metal particles or foreign matter contact our sales serv...

Page 223: ...igger outward so that the inspection part of the winch reduction gearcase of the post side can be seen 3 Remove the inspection cover 1 by unscrewing the mounting bolts 2 4 bolts Fig 5 46 4 Turn the winch slowly to a position where both the oil inspection plug G and drain plug P can be seen Fig 5 47 a Stop it at a position where the oil inspection plug is visible through the inspection hole A on th...

Page 224: ...hten the plugs after checking refilling the oil Oil drain pan Prepare a container of at least 0 3 gal 1 L Oil replacement quantity in travelling motor reduction gearcase 0 1 gal 0 33 L 1 Place the machine on a level surface 2 Move the machine forward and backward so that drain plug P of the travelling motor reduction gearcase will come to the bottom Fig 5 52 3 Place a drain pan directly underneath...

Page 225: ... from the rubber tracks Remove and clean any oil and chemical solvents immediately Do not travel over road surfaces covered in oil Fig 5 55 Do not operate on a fire or on hot surfaces such as steel plates left in the sun or newly poured asphalt Fig 5 56 Keep the rubber tracks indoors out of direct sunlight and rain when storing for up to 3 months or more Avoid making spin turns on concrete surface...

Page 226: ...ughly with water after use on the following materials Material crushed and yielding oil such as soy beans corns and rapeseed Ammonium sulfate potassium chloride or concentrated super phosphate These are corrosive and will corrode the bonding of the cored bar section Fig 5 61 Salt water and shore areas Salt corrodes the bonding of the cored bar section Only use the rubber tracks within the temperat...

Page 227: ...ing more than two links Fig 5 66 Broken Steel Cords More than half of the steel cord layer is broken on one side Fig 5 67 Fallen Core Metal Core metal of the rubber track has fallen out of more than one location Fig 5 68 Cracks Cracks occur between the rubber track lugs Fig 5 69 Removal of Rubber Tracks WARNING Exposure Hazard The rubber track tension adjuster contains grease under high pressure U...

Page 228: ...ve it Installation of Rubber Tracks A grease gun and steel pipe are required for the following procedure 1 Set the outriggers and raise the tracks approximately 50 mm from the ground See OUTRIGGER SETTING on page 4 43 2 With the rubber track engaged with the sprocket install the crawler on the idler 3 With the sprocket rotating backward push the rubber track in to stop rotation Fig 5 73 4 Insert t...

Page 229: ...ulder of the rubber track 4 Standard tension of the rubber track is 5 to 10 mm clearance between the wheel tread of the centre of the track roller and the shoulder of the rubber track Fig 5 78 5 If the tension is not within specification see Adjusting Rubber Track Tension on page 5 39 Adjusting Rubber Track Tension WARNING Exposure Hazard The rubber track tension adjuster contains grease under hig...

Page 230: ...on page 4 53 In case the tension is strong to reduce tension 1 With two mounting bolts 2 removed remove the inspection cover 1 Fig 5 81 2 Loosen grease valve 3 slowly to let the grease come out Fig 5 82 3 Use care not to loosen the grease valve by more than one turn 4 If the grease does not come out smoothly take following measures a Stow the outrigger and lower the machine to the ground See OUTRI...

Page 231: ...at or beyond the replacement standard The benchmark for replacing wire ropes is common to all wire ropes for winching telescoping the boom and slinging Wire rope fatigues with normal use Change wire ropes when they show the following signs Broken wire In running rope six randomly distributed broken wires in one lay or three broken wires in one strand in one lay Fig 5 83 Kinking crushing birdcaging...

Page 232: ...g direction and number of twists Fig 5 86 2 Move the winch lever to LOWER push forward to lower the hook block until just before it makes contact with the ground Lower the hook block by either moving the boom lifting lever to LOWER push forward to lower the boom or by moving the boom telescoping lever to RETRACT pull toward you to retract the boom 3 Turn the Starter Switch to OFF to stop the machi...

Page 233: ...e wire rope from winch drum 8 When you have removed the wire rope remove the end of the wire rope that was attached to the winch drum 8 using the following procedure Have a piece of round bar 6 with a diameter of 4 to 6 mm ready and apply it to rope wedge 9 Lightly tap round bar with hammer in the direction indicated by the arrow b to remove the rope wedge Fig 5 91 9 Remove the remaining wire rope...

Page 234: ...pe through the winch drum with the rope loose b The rope wedge 9 should be in position a Pass the wire rope around the rope wedge and pull the rope in the direction indicated by the arrow Adjust the length of the wire rope to keep the end of the wire rope from protruding from the narrow hole in the winch drum Fig 5 94 3 Slowly move the winch lever to the UP position pull it toward you to wind up t...

Page 235: ...0 9 Secure the wedge socket 3 to the boom with the wedge socket pin 1 and tighten the wedge socket pin fixing bolt 2 10 Place the boom lift lever in the RAISE position pull it toward you or place the boom telescoping lever in the EXTEND position pull it toward you to raise the hook block Winch operation is allowed only after the hook block is raised 11 With the boom extended and raised fully place...

Page 236: ... rope is slackened at its midway If it is slacked down see Boom Telescope Wire Rope Adjustment on page 5 47 and make the adjustment Fig 5 101 2 With the boom positioned horizontally and all the booms retracted check to see if a clearance of 6 mm or greater remains between the booms no 3 and no 4 a and between no 4 and no 5 b If the clearance of 6 mm or greater remains make the adjustment using Boo...

Page 237: ...totally retracted and positioned horizontally extend the boom which telescopes approximately 2 m Fig 5 103 2 Retract boom slowly to stowed position In this position measure the clearance a and b and make following adjustment Fig 5 104 If the clearance a is 5 mm or greater adjust the no 4 boom pull in wire rope 5 If the clearance a is zero make the adjustment in accordance with Step 4 3 Adjust no 4...

Page 238: ...clearance b is zero make the adjustment in accordance with Step 6 Fig 5 107 5 Adjust no 5 boom pull in wire rope 7 Fig 5 108 a Loosen the lock nut 13 then tighten the right and left side adjustment nuts 14 evenly in the direction of tightening the no 5 boom pull in wire rope 7 until the clearance b becomes zero b After completion of Steps a and b and as the result of measurement thereof if the cle...

Page 239: ...Filter Element Inspection and Replacement 1 Stop the machine on a level surface 2 See Removing Machinery Cover on page 5 11 and remove the machinery cover 3 Insert a hexagonal wrench into the hole b in the case 7 Fig 5 110 4 Twist the hexagonal wrench outward and rotate the air breather cap 1 counterclockwise Fig 5 111 5 Remove the air breather cap 1 6 Remove bolt 3 on the top of the detached cap ...

Page 240: ...ion and Cleaning 1 See Air Breather Inspection on page 5 49 and remove the air breather cap 1 from the oil inlet F on the top of the hydraulic oil tank Fig 5 114 2 Remove the three bolts 8 then remove the case 7 Fig 5 115 3 Remove the strainer 9 and inspect it 4 Clean the strainer 9 if there is any debris accumulated inside The strainer should be cleaned using light oil or similar Do not use solve...

Page 241: ...ge G Be careful to avoid allowing any foreign matter into the oil inlet opening when replenishing the oil Container to catch contaminating water Prepare a container with a capacity of at least 5 L 1 Stop the machine on a level surface 2 See TRAVELLING POSITION on page 4 29 and put the machine in the Travelling posture 3 See Removing Machinery Cover on page 5 11 and remove the machinery cover 4 See...

Page 242: ...ese procedures Wash and clean each section of the machine and store inside If the machine is to be stored outside select a flat location where the machine will not be exposed to water flooding or other elements Grease the machine and replace the oil The recommended storage conditions are as follows in order to extend the battery life Avoid storing with the battery charged above 95 or below 10 Stor...

Page 243: ...attery The battery unit may be operated at an ambient temperature down to 20 C but battery performance may be reduced at low temperatures After Daily Operation Observe the following to prevent the machine from not starting or operating due to frozen water or dirt in or on the machine Remove dirt and water from the machine Keep the hydraulic cylinder rod surfaces clean to prevent seals from being d...

Page 244: ...our sales service agency to request inspection and repair service as needed Consumables Parts for mounting searcher hook are consumables Replace them at periodic inspection or before they reach abrasion limits Replace consumables regularly which will produce economical use of this machine Always replace with a Maeda genuine item Check parts catalogue for correct part number for parts request List ...

Page 245: ... region Pre Start and Post Start Inspection Items Inspection Item Reference Pre Start Before Starting Machine Check E Boom Frame and Hook See E Boom Frame and Hook on page 5 56 Check Greasing See Greasing on page 5 56 Check Searcher Hook Fix Bolts See Searcher Hook Fix Bolts on page 5 56 Installation Check of Position Pin and Lynch Pin See Position Pin and Lynch Pin on page 5 56 Post Start After S...

Page 246: ...bearing and correct function of wire rope latch 1 Fig 5 120 Greasing Wipe off and clean old grease from contact point 3 of shackle 2 and E boom hole and contact point 4 of hook 1 and shackle 2 then apply new lithium grease Fig 5 121 Searcher Hook Fix Bolts DANGER If any damage is found on searcher hook fixing bolts please exchange for new one s right away Breakage of bolts will cause the searcher ...

Page 247: ...ion and Displayed Parameter Value Displayed on Moment Limiter Displayed boom length with the boom length at minimum 2 5 m Displayed boom length with the boom length at maximum 8 6 m Displayed working radius with the boom length of 4 4 m and boom angle of 29 2 SH1 4 2 0 1 m SH2 4 2 0 1 m SH3 4 1 0 1 m 5 Check if displayed actual load value is equal to the total weight of the load searcher hook 20 k...

Page 248: ...Oil on page 5 16 Hydraulic oil tank strainer and element clogged Clean and replace filter See Replace Hydraulic Oil Return Filter on page 5 29 Hydraulic oil temperature high Low hydraulic oil level Fill hydraulic oil to specified level See Check Add Hydraulic Oil on page 5 16 High working load Reduce working load Increase interval between tasks High ambient temperature Take measures to protect aga...

Page 249: ...Disconnect switch set to UNLOCK Set disconnect switch to LOCK Defective power supply cable Replace cable Facility circuit breaker is turned off Check circuit breaker Status switch is turned off when starting charging Turn on starter switch Charging plug not inserted correctly Check charging plug BMU abnormality Inspect and replace Motor controller abnormality Inspect and replace Over discharge Ins...

Page 250: ...correctly adjusted or defective Inspect repair or replace Insufficient battery capacity Charge battery Motor output is low or gradually decreases Motor emits abnormal sound or vibration while in operation Insufficient battery capacity Charge battery Controller error Inspect repair or replace Motor overheats while in operation Motor output is low or gradually decreases Motor or pump retaining bolts...

Page 251: ...aged Where the transmitter is deformed or damaged repair or replace it Each operation lever of the transmitter is in its NEUTRAL position In the event of operation lever or control button failure repair or replace The battery icon of the transmitter is blinking in red Replace the battery Make sure that you contact us or our sales service agency for the actions marked within the table Contact us or...

Page 252: ...rror LSIN00 Error LSIN01 Error LSIN02 Error LSIN03 Error LSIN04 Slew Origin LS Input error LSIN05 Right Slew Lever LS detection error LSIN06 Left Slew Lever LS detection error LSIN07 Right Slew Lever LS Sticking error LSIN08 Left Slew Lever LS Sticking error EV01 BMU power supply voltage error Check battery charge Check wiring EC02 TTC36X communication error EC03 TTC30X communication error EC20 Ra...

Page 253: ...n Fig 5 123 NOTICE You do not need to stow the boom here Only the boom slewing position is being aligned 3 Once the alignment marks are aligned press the check mark to calibrate the position Fig 5 124 4 Once corrected slew the boom 20 both left and right and check to confirm that the slewing angle is displayed correctly The angle is correct if it is displayed as 0 degrees when the boom is at the s...

Page 254: ...Section 5 TROUBLESHOOTING Mini Crawler Crane M A E D A 5 64 9 2020 MC285CB 3 This Page Intentionally Left Blank ...

Page 255: ...CB 3 OPERATION MANUAL Document No 102BE OM2009 00 First edition 11st September 2020 Maeda Seisakusho Co Ltd 1095 Onbegawa Shinonoi Nagano Nagano 388 8522 Japan No part of this manual can be reproduced in any form without permission ...

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