Maeda MC815C User manual

106E-SM1804-00
Service Manual
Crawler Crane
Serial No. T0001 and up
MC815C
Part numbers and parts list in the Service Manual are for use fo
r
servicing such as disassembling and assembling.
The parts and part numbers are subject to change without prior notice
due to continuous machine improvement and modification. When
ordering parts, make sure to check the latest parts catalog (lates
t
information).

0-1
CONTENTS
Item Page
OVERVIEW 1-1
1. EXTERNAL VIEW 1-2
1.1 STANDARD SPECIFICATIONS 1-2
1.2 SEARCHERHOOK SPECIFICATIONS 1-2
1.3 FLY-JIB SPECIFICATIONS 1-3
2. DIMENSIONAL DRAWING OF OUTRIGGER WIDTH 1-3
3. PRINCIPAL SPECIFICATIONS LIST 1-4
3.1 STANDARD SPECIFICATIONS 1-4
3.2 ENGINE AND ELECTRIC MOTOR SPECIFICATIONS 1-5
3.3 REMOTE CONTROL SPECIFICATIONS 1- 6
4. COMPONENT MASS LIST 1- 7
5. OIL AND WATER QUANTITIES LIST 1- 8
6. RATED TOTAL LOAD CHART 1- 8
6.1 6 FALLS 1- 9
6.2 4 FALLS 1-12
6.3 2 FALLS 1-15
6.4 SINGLE FALL 1-18
7. WORKING RADIUS/LIFTING HEIGHT 1-21
8. WORKING RADIUS AND HOISTING HEIGHT (TRAVELLING WITH HOISTED LOAD) 1-22
STRUCTURE AND MAINTENANCE PROCEDURE 2-1
1. ENGINE AND COOLING-RELATED COMPONENTS 2-2
1.1 ENGINE SPECIFICATIONS 2-2
1.2 ENGINE MOUNT 2-4
1.3 PTO (POWER TAKE-OFF) 2-5
1.4 COOLING SYSTEM 2-6
1.5 FUEL LINE 2-8
1.6 FUEL TANK 2-9
2. POWER TRANSMISSIONSCHEMATIC DIAGRAM 2-10
2.1 HYDRAULIC SYSTEM DIAGRAM (MC815C) 2-10
2.2 SWING CIRCLE 2-11
3. UNDERCARRIAGE AND FRAME 2-12
3.1 TRACK FRAME 2-12
3.2 IDLER CUSHION 2-14
3.3 IDLER 2-15
3.4 TRACK ROLLER 2-16
3.5 CARRIER ROLLER 2-17
3.6 SPROCKET 2-18
3.7 TRACK SHOE 2-19
3.8 SHOE PLATE 2-19
3.9 ADJUSTING RUBBER TRACK TENSION 2-20

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Item Page
4. HYDRAULIC UNITS 2-22
4.1 HYDRAULIC UNITS LAYOUT DIAGRAM 2-22
4.1.1 HYDRAULIC CIRCUIT DIAGRAM 2-24
4.2 HYDRAULIC OIL TANK AND FILTER 2-26
4.3 HYDRAULIC PUMP 2-27
4.3.1 HYDRAULIC PUMP EXTERNAL VIEW 2-27
4.3.2 HYDRAULIC PUMP CONNECTION DESTINATIONS 2-28
4.3.3 HYDRAULIC PUMP SPECIFICATIONS 2-28
4.3.4 PUMP HYDRAULIC CIRCUIT DIAGRAM 2-28
4.4 SHUTTLE MANIFOLD BLOCK 2-29
4.5 TRAVEL / OUTRIGGERCONTROL VALVE 2-30
4.5.1 TRAVEL / OUTRIGGER CONTROL VALVE EXTERNAL VIEW 2-30
4.5.2 TRAVEL / OUTRIGGER CONTROL VALVE (UPPER) CONNECTION DESTINATIONS 2-31
4.5.3 TRAVEL / OUTRIGGER CONTROL VALVE (LOWER) CONNECTION DESTINATIONS 2-31
4.5.4 HYDRAULIC SPECIFICATIONS 2-32
4.5.5 SOLENOID VALVE SPECIFICATIONS 2-32
4.5.6 TRAVEL / OUTRIGGER CONTROL VALVE LAYOUT 2-32
4.5.7 TRAVEL / OUTRIGGER CONTROL VALVE CIRCUIT DIAGRAM 2-33
4.6 CHECK VALVE (JOINT) 2-34
4.7 CRANE CONTROL VALVE 2-35
4.7.1 CRANE CONTROL VALVE EXTERNAL VIEW 2-35
4.7.2 CRANE CONTROL VALVE CONNECTION DESTINATIONS 2-36
4.7.3 CRANE CONTROL VALVE CIRCUIT DIAGRAM 2-36
4.7.4 CRANE CONTROL VALVE LAYOUT 2-37
4.7.5 CRANE CONTROL VALVE SPECIFICATIONS 2-37
4.8 SLEWING MOTOR 2-38
4.8.1 SLEWING MOTOR EXTERNAL VIEW 2-38
4.8.2 SLEWING MOTORCONNECTION DESTINATIONS 2-38
4.8.3 SLEWING MOTOR SPECIFICATIONS 2-38
4.8.4 SLEWING MOTOR INTERNAL STRUCTUREDIAGRAM 2-39
4.9 TRAVELLING MOTOR 2-40
4.9.1 TRAVELLING MOTOREXTERNAL VIEW 2-40
4.9.2 TRAVELLING MOTOR CONNECTION DESTINATIONS 2-40
4.9.3 TRAVELLING MOTOR SPECIFICATIONS 2-40
4.10 TRAVELLINGSPEEDSWITCHINGVALVE (JOINT WINCH BRAKERELEASINGVALVE/ WINCH2SPEEDSWITCHINGVALVE) 2-41
4.10.1 TRAVELLING SPEED SWITCHING VALVE APPEARANCE / SPECIFICATIONS 2-41
4.11 WINCH MOTOR 2-42
4.11.1 WINCH MOTOR EXTERNAL VIEW 2-42
4.11.2 WINCH MOTOR CONNECTION DESTINATIONS 2-42
4.11.3 WINCH MOTOR SPECIFICATIONS 2-43
4.11.4 WINCH VENTING 2-44
4.12 ROTARY JOINT 2-45
4.12.1 ROTARY JOINT EXTERNAL VIEW 2-45
4.12.2 ROTARY JOINT SPECIFICATIONS 2-46
4.12.3 ROTARY JOINT CONNECTION DESTINATIONS 2-46
4.12.4 ROTARY JOINT STRUCTURE 2-46

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Item Page
4.13 DERRICK CYLINDER 2-47
4.13.1 DERRICK CYLINDER EXTERNAL VIEW 2-47
4.13.2 DERRICK CYLINDER CONNECTION DESTINATIONS 2-48
4.13.3 DERRICK CYLINDER SPECIFICATIONS 2-48
4.13.4 COUNTERBALANCE VALVE (IDENTIFICATION STAMP “D” FORDERRICKING CYLINDER) 2-49
4.13.5 COUNTER-BALANCE VALVE OPERATING DIAGRAM 2-50
4.14 TELESCOPIC CYLINDER ASSEMBLY 2-51
4.14.1 TELESCOPIC CYLINDER EXTERNAL VIEW 2-51
4.14.2 TELESCOPIC CYLINDER CONNECTION DESTINATIONS 2-52
4.14.3 TELESCOPIC CYLINDER SPECIFICATIONS 2-52
4.14.4 TELESCOPIC CYLINDER CROSS-SECTIONAL DRAWING 2-53
4.14.5 TELESCOPIC CYLINDER HYDRAULIC SYSTEMDIAGRAM 2-54
4.14.6 SEQUENCE VALVE 2-55
4.14.7 MECHANICAL CHECK VALVE 2-56
4.14.8 COUNTER BALANCE VALVE (IDENTIFICATION STAMP “T” FOR TELESCOPING CYLINDER) 2-57
4.15 OUTRIGGER CYLINDER ASSEMBLY 2-58
4.15.1 OUTRIGGER CYLINDER EXTERNAL VIEW 2-58
4.15.2 OUTRIGGER CYLINDER CONNECTION DESTINATIONS 2-59
4.15.3 OUTRIGGER CYLINDER SPECIFICATIONS 2-59
4.15.4 DOUBLE PILOT CHECK VALVE 2-60
4.16 SLIDE CYLINDER ASSEMBLY 2-61
4.16.1 SLIDE CYLINDER EXTERNAL VIEW 2-61
4.16.2 SLIDE CYLINDER CONNECTION DESTINATIONS 2-62
4.16.3 SLIDE CYLINDER SPECIFICATIONS 2-62
4.17 OR SELECT VALVE 2-63
4.18 OIL COOLER 2-64
4.19 RETURN MANIFOLD BLOCK 2-65
4.20 HYDRAULIC PIPING DIAGRAM 2-66
4.20.1 P LINES (PUMP - SHUTTLE MANIFOLD BLOCK LINE) 2-66
4.20.1.1 P LINES (PUMP LINES- SHUTTLE MANIFOLD BLOCK - CHECK JOINT) HYDRAULIC SYSTEM DIAGRAM 2-68
4.20.2 P LINES (SHUTTLE MANIFOLD BLOCK -TRAVELLING / OUTRIGGER CONTROL VALVE LINES) 2-69
4.20.3 T.DR LINES 2-71
4.20.4 TRAVELLING LINES 2-73
4.20.5 OUTRIGGER LINES 2-75
4.20.6 HYDRAULIC PIPING CRANE FIXED PART ASSEMBLY 2-78
4.20.7 HYDRAULIC PIPING ROTATING PART ASSEMBLY (DERRICKING LINES) 2-80
4.20.8 HYDRAULIC PIPING ROTATING PART ASSEMBLY (TELESCOPING LINES) 2-81
4.20.9 HYDRAULIC PIPING ROTATING PART ASSEMBLY (WINCH LINES) 2-82
4.20.10 HYDRAULIC PIPING ROTATING PART ASSEMBLY (WINCHDRAIN LINE) 2-83
4.20.11 HYDRAULICPIPING ROTATINGPARTASSEMBLY (WINCH BRAKERELEASE/2 SPEEDSWITCHINGLINES) 2-84
5. WORK EQUIPMENT 2-86
5.1 BOOM ASSEMBLY 2-86
5.2 HOOK BLOCK ASSEMBLY 2-88
5.2.1 HOOK BLOCK ASSEMBLY 2-88
5.2.2 INSPECTION OF HOOK BLOCK 2-89
6. ELECTRIC CIRCUIT DIAGRAMS (1/3 - 3/3) 2-91
7. ELECTRICAL EQUIPMENT CONNECTION DIAGRAM (1/2 - 2/2) 2-94

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Item Page
8. ELECTRICAL UNITS 2-97
8.1 CABIN INTERIOR 2-97
8.1.1 NAME OF EACH CONTROL PART 2-97
8.1.2 OUTRIGGER OPERATION PANEL 2-98
8.1.3 LEFT CONTROL LEVER 2-98
8.1.4 RIGHT CONTROL LEVER 2-101
8.1.5 MONITOR 2-104
8.1.6 LIST OF ERROR CODES 2-106
8.1.7 CONSUMABLES DISPLAY 2-111
8.1.8 FUSE BOX 2-112
8.2 CONTROLLER 2-113
8.2.1 CONTROLLER LAYOUT 2-113
8.2.2 LOWER PART CONTROLLER PIN NUMBERS 2-115
8.2.3 IO UNIT PIN NUMBERS 2-118
8.3 HARNESS ASSEMBLY 2-119
8.3.1 HARNESS OVERVIEW FIGURE 2-119
8.3.2 HARNESS PRODUCT NAME / NUMBER 2-119
8.3.3 OUTRIGGER SENSOR HARNESS 2-120
8.3.4 ENGINE HARNESS 2-121
8.3.5 CONSOLE HARNESS 2-122
8.3.6 VALVE HARNESS 2-123
8.3.7 DISPLAY HARNESS 2-124
8.3.8 BOOM HARNESS 2-125
8.4 ELECTRICAL FITTINGS OUTSIDE THE CABIN 2-126
8.4.1 LED LIGHT 2-126
8.4.2 SURVEILLANCE CAMERAS 2-127
8.5 SENSORS 2-128
8.5.1 PRESSURE AND OIL TEMPERATURE SENSORS 2-128
8.5.2 INCLINATION SENSOR 2-129
8.5.3 FUEL SENDER ASSEMBLY 2-130
8.5.4 ROTARY BRUSH 2-131
9. SAFETY DEVICE 2-133
9.1 CONFIGURATION OF MOMENT LIMITER 2-133
9.2 MOMENT LIMITER - NAMES FOR MONITOR INDICATORS (CRANE MODE) 2-134
9.3 SENSOR ASSEMBLY 2-135
9.3.1 LENGTH METER (STANDARD SPECIFICATION) 2-135
9.3.2 LENGTH METER (BOOM LIGHT SPECIFICATION) 2-136
9.3.3 ANGLE DETECTOR 2-137
9.3.4 PRESSURE SENSOR 2-138
9.4 OVER-HOISTING PREVENTION DEVICE 2-139
9.5 OVER UN-WINDING DETECTION DEVICE 2-140
9.6 TRI-COLOUR REVOLVING WORKING STATUS LAMP 2-141
9.7 OUTRIGGER SAFETY DEVICES 2-142
9.7.1 OUTRIGGER POSITION DETECTION PARTS 2-142
9.7.2 OUTRIGGER GROUNDING DETECTION PARTS 2-143
9.7.3 OUTRIGGER ROTARY POSITION DETECTION PARTS 2-144
9.8 BOOM STOWING POSITION DETECTION PARTS 2-145
9.9 HOOK GROUNDING DETECTION PARTS 2-146

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Item Page
REMOTE CONTROL 3-1
1. COMPONENTS OF THE TRANSMITTER 3-2
1.1 NAMES AND DESCRIPTION OF REMOTE CONTROL PARTS 3-2
1.1.1 TRANSMITTER AND RECEIVER 3-2
1.1.2 DESCRIPTION OF REMOTECONTROLLER ACCESSORIES 3-6
2. HANDLING REMOTE CONTROLLER BATTERY 3-7
2.1 REPLACEMENT TIMING OF BATTERY 3-7
2.2 REPLACEMENT METHOD OF BATTERY 3-7
2.3 CHARGING METHOD OF BATTERY 3-8
3. TROUBLESHOOTING 3-10
3.1 BEFORE REMOTE CONTROLLER FAILURE DIAGNOSIS 3-10
3.2 REMOTE CONTROLLER 3-11
3.3 ELECTRICAL WIRING DIAGRAM FOR REMOTE CONTROLLER 3-12
3.4 ELECTRICAL WIRING DIAGRAM FOR REMOTE CONTROLLER 3- 13
4. PRINCIPAL SPECIFICATIONS LIST 3-14
5. SERVICE LOCATIONS 3-15
ELECTRIC MOTOR 4-1
1. ELECTRIC POWER UNIT 4-2
1.1 ELECTRIC POWER UNIT PART NAMES 4-2
1.2 POWER SUPPLY BOX 4-2
1.3 INVERTER PART NAMES 4-3
2. ELECTRIC POWER UNIT ASSEMBLY 4-4
3. ELECTRIC MOTOR 4-5
4. ELECTRIC LINE ASSEMBLY 4-6
5. INVERTER HARNESS (WIRE HARNESS OF THE ELECTRICAL MOTOR) 4-8
6. ELECTRIC CIRCUIT DIAGRAM FOR ELECTRIC MOTOR SPECIFICATIONS 4-8
7. TROUBLESHOOTING 4-9
8. PRINCIPAL SPECIFICATION LIST (MACHINES WITH ENGINE & ELECTRIC MOTOR) 4-10

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Item Page
FLY JIB 5-1
1. NAME OF EACH SECTION OF FLY JIB 5-2
2. FLY JIB HYDRAULIC SYSTEM 5-3
2.1 SOLENOID OPERATED DIRECTIONAL CONTROL VALVE (JIB SWITCHING SOL) 5-3
2.2 HOSE REEL 5-4
2.3 DERRICKING CYLINDER (FOR FLY JIB) 5-5
2.4 TELESCOPING CYLINDER (FOR FLY JIB) 5-6
2.5 SELECTOR VALVE BLOCK (FLY JIB TELESCOPIC CYLINDER MOUNTED) 5-7
3. FLY JIB 5-8
3.1 FLY JIB (MAIN BOOM SIDE) 5-8
3.2 FLY JIB (FLY JIB SIDE) 1/2 5-9
3.3 FLY JIB (FLY JIB SIDE)2/2 5-10
4. FLY JIB HARNESS 5-11
4.1 FLY JIB HARNESS 1/3 5-11
4.2 FLY JIB HARNESS 2/3 5-12
4.3 FLY JIB HARNESS 3/3 5-13
5. FLY JIB SAFETY DEVICE 5-14
5.1 PIN TYPE LOAD CELL (LOAD TRANSDUCER) 5-14
5.2 LENGTH METER REEL (FLY JIB MOUNTED) 5-15
5.3 ANGLE DETECTOR (FLYJIB MOUNTED) 5-16
5.4 LENGTH GAUGE REEL(MAIN BOOM MOUNTED (COMMONTO BOOM LIGHT SPECIFICATIONS) ) 5-18
6. FLY JIB ELECTRICAL CIRCUIT DIAGRAM 5-19
7. TROUBLESHOOTING 5-20
7.1 LIST OF ERROR CODES 5-20
7.2 WHEN THESE PHENOMENA HAPPEN 5-21
8. SPECIFICATIONS 5-22
8.1 SPECIFICATION TABLE 5-22
8.2 SPECIFICATION DIMENSIONAL DRAWING 5-22
8.3 RATED TOTAL LOAD CHART 5-23
8.4 WORKING RADIUS/LIFTING HEIGHT 5-24
SEARCHER HOOK 6-1
1. NAMES OF SEARCHER HOOK PARTS 6-2
2. SEARCHER HOOK ASSEMBLY 6-3
3. CHANGING SEARCHER HOOK ANGLE 6-4
4. CHANGING TO SEARCHER HOOK MODE 6-5
5. TROUBLESHOOTING 6-6
6. SPECIFICATIONS 6-7
6.1 SPECIFICATION TABLE 6-7
6.2 SPECIFICATION DIMENSIONAL DRAWING 6-7
6.3 RATED TOTAL LOAD CHART 6-8
6.4 WORKING RADIUS/LIFTING HEIGHT 6-9

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Item Page
DISASSEMBLING AND ASSEMBLING 7-1
1. DISMOUNTING AND MOUNTING THE BOOM ASSEMBLY 7-2
1.1 DISMOUNTING THE BOOM 7-3
1.2 MOUNTING THE BOOM 7-3
1.3 CONNECTION DIAGRAM FOR BOOM EQUIPMENT 7-3
2. DISASSEMBLING AND ASSEMBLING THE BOOM ASSEMBLY 7-4
2.1 DISASSEMBLING THE NO.1 BOOM 7-4
2.2 DISASSEMBLING THE NO.2 BOOM 7-5
2.3 DISASSEMBLING THE NO.3 BOOM 7-6
2.4 DISASSEMBLING THE NO.4 BOOM 7-7
2.5 DISASSEMBLING THETELESCOPIC CYLINDER FROM THE NO. 5 BOOM 7-8
3. DISMOUNTING AND MOUNTING THE WINCH WIRE ROPE 7-9
3.1 REMOVAL OF WINCH WIRE ROPE 7-9
3.2 INSTALLATION OF WINCH WIRE ROPE 7-10
3.3 ACTIONS TO TAKE WHEN THE WINCH WIRE ROPE IS TWISTED 7-12
4. CHECKING/ADJUSTING MAIN BOOM TELESCOPING WIRE ROPE 7-13
4.1 CHECKING THE BOOM TELESCOPING WIRE ROPE 7-13
4.2 ADJUSTING THE BOOMTELESCOPING WIREROPE 7-14
REFERENCE VALUES 8-1
1. TABLE OF ENGINE RELATED REFERENCE VALUES 8-2
2. TABLE OF MACHINE RELATED REFERENCE VALUES 8-3
3. TABLE OF MOMENT LIMITER RELATED REFERENCE VALUES 8-6
SERVICE MODE S-1
1. MONITORING S-3
2. CONSUMABLES S-4
3. WORK HISTORY S-5
4. ERROR HISTORY S-9
5. INITIAL SETTING S-9
6. CRANE CALIBRATION S-11
7. ML SETTING S-17
8. FUNCTION S-18
TROUBLESHOOTING T-1
1. TROUBLESHOOTING T-301
1.1 TROUBLESHOOTING (RELATED TO ELECTRIC; LIST OF ERROR CODES) T-301
1.2 TROUBLESHOOTING (MATTERS OTHER THAN ERROR CODE DISPLAY) T-401
1.2.1 TROUBLESHOOTING OF THE ENGINE UNIT T-403
1.2.2 TROUBLESHOOTING OF THE ELECTRICAL SYSTEMS T-409
1.2.3 TROUBLESHOOTING OF THE HYDRAULIC PRESSURE AND MECHANICAL SYSTEMS T-417

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This Page Intentionally Left Blank.

1-1
OVERVIEW
CONTENTS
Item Page
1. EXTERNAL VIEW 1-2
2. DIMENSIONAL DRAWING OF OUTRIGGER WIDTH 1-3
3. PRINCIPAL SPECIFICATIONS LIST 1-4
4. COMPONENT MASS LIST 1-7
5. OIL AND WATER QUANTITIES LIST 1-8
6. RATED TOTAL LOAD CHART 1-8
7. WORKING RADIUS/LIFTING HEIGHT 1-21
8. WORKING RADIUS AND HOISTING HEIGHT (TRAVELLING WITH HOISTED LOAD) 1-22

1-2
1. EXTERNAL VIEW
1.1 STANDARD SPECIFICATIONS
1.2 SEARCHER HOOK SPECIFICATIONS

1-3
1.3 FLY-JIB SPECIFICATIONS
2. DIMENSIONAL DRAWING OF OUTRIGGER WIDTH

1-4
3. PRINCIPAL SPECIFICATIONS LIST
3.1 STANDARD SPECIFICATIONS
Equipment/Item MC815CWM
Weight and
dimensions
Machine mass 9460 kg
Overall length × width ×
height 5900 mm × 1670 mm × 2490 mm
Distance between centre
idler and sprocket 2245 mm
Track gauge 1270 mm
Width of crawler 400 mm
Performance
Maximum rated total load ×
working radius 8.09 t × 2.4 m
Maximum working radius 18.8 m
Maximum lifting height
above ground 19.6 m
Winch
system
Type 2-speed hydraulic motor with built-in automatic brake
(differential planetary gear reduction type, grooved drum)
Hook hoist speed 20.6 m/min (4 layers, 6 falls)
Hoist wire rope IWRC 6 × Fi (29), 10 × 150 m
Telescoping
system
Type 3 × sequentially telescoping, hydraulic cylinder + 1 × wire rope telescoping system
with built-in sheave (with hydraulic automatic locking device)
Type of boom Automatic hydraulic 5-section pentagonal telescopic
(Stages 2 and 3: Sequential telescoping; Stages 4 and 5: Simultaneous telescoping)
Boom length 5.52 m - 8.99 m - 12.46 m - 15.93 m - 19.40 m
Boom telescoping stroke /
time 13.88 m / 52 sec
Boom hoist
system
Type
Double-acting hydraulic cylinder
Single direct thrusting system (with hydraulic automatic locking device)
Derricking angle / Time 0 to 80 deg / 22.9 sec
Slewing
system
Type Swing bearing support, hydraulic motor driven,
Reducer: worm + spur gear reduction, Brake: worm self-lock
Slewing angle / Time 360° (continuous) / 2.5 min-1
Outrigger
system
Type Extension / grounding:
hydraulic cylinder direct acting type (with hydraulic automatic locking device)
Max. extended width (left to right) (Front) 6300 mm (Rear) 6520 mm
Max. extended width (front to rear) 6770 mm
Travelling
system
Type Hydraulic 2 speed motor drive, step-less speed changer, built-in brake
Travel speed Forward / backward travelling: 0 to 3.2 km/h
Grade ability 23°
Ground pressure 52 kPa (0.53 kgf/cm2)
Hydraulic
system
Hydraulic pump Twin variable piston pump
Hydraulic oil tank capacity 157 L
Engine
Model Yanmar 4 TNV88C-NMB
Type Vertical type inline 4 valve, water cooled, 4 cycle (direct injection type)
Displacement 2.189 L (2189 cc)
Rated output (continuous) 30.5 kW / 2500 min-1 (41.5 PS / 2500 rpm)
Fuel used/fuel tank capacity Light oil / 70 L
Battery Model 120E41R (12 VDC × 1)
Safety
device
Ove
r
-winding alarm / automatic stop device, ove
r
-unwinding detector, hydraulic automatic locking device, wire rope
slinging latch, alarm buzzer, levelling instrument, overturn alarm device, lock lever, travelling / outrigger / crane
changeover switch, outrigger safety device (outrigger interlock, crane interlock), overload prevention device,
tri-colour revolving working status lamp, radio controller transmitter load display, working radius limiter (with slewing
radius limiter)

1-5
3.2 ENGINE AND ELECTRIC MOTOR SPECIFICATIONS
Equipment/Item MC815CWME (machines with engine & electric motor)
Weight and
dimensions
Machine mass 9700 kg
Overall length × width ×
height 5900 mm × 1670 mm × 2490 mm
Distance between centre
idler and sprocket 2245 mm
Track gauge 1270 mm
Width of crawler 400 mm
Performance
Maximum rated total load ×
working radius 8.09 t × 2.4 m
Maximum working radius 18.8 m
Maximum lifting height
above ground 19.6 m
Winch
system
Type 2-speed hydraulic motor with built-in automatic brake
(differential planetary gear reduction type, grooved drum)
Hook hoist speed 20.6 m/min (4 layers, 6 falls)
Hoist wire rope IWRC 6 × Fi (29), 10 × 150 m
Telescoping
system
Type 3 × sequentially telescoping, hydraulic cylinder + 1 × wire rope telescoping system
with built-in sheave (with hydraulic automatic locking device)
Type of boom Automatic hydraulic 5-section pentagonal telescopic
(Stages 2 and 3: Sequential telescoping; Stages 4 and 5: Simultaneous telescoping)
Boom length 5.52 m - 8.99 m - 12.46 m - 15.93 m - 19.40 m
Boom telescoping stroke / time 13.88 m / 52 sec
Boom hoist
system
Type Double-acting hydraulic cylinder
Single direct thrusting system (with hydraulic automatic locking device)
Derricking angle / Time 0 to 80 deg / 22.9 sec
Slewing
system
Type Swing bearing support, hydraulic motor driven,
Reducer: worm + spur gear reduction, Brake: worm self-lock
Slewing angle / Time 360° (continuous) / 2.5 min-1
Outrigger
system
Type Extension / grounding:
hydraulic cylinder direct acting type (with hydraulic automatic locking device)
Max. extended width (left to right) (Front) 6300 mm (Rear) 6520 mm
Max. extended width (front to rear) 6770 mm
Travelling
system
Type Hydraulic 2-speed motor drive, step-less speed changer, built-in brake
Travel speed Forward / backward travelling: 0 to 3.2 km/h
Grade ability 23°
Ground pressure 53 kPa (0.54 kgf/cm2)
Hydraulic
system
Hydraulic pump Twin variable piston pump
Hydraulic oil tank capacity 157 L
Engine
Model Yanmar 4 TNV88C-NMB
Type Vertical type inline 4 valve, water cooled, 4 cycle (direct injection type)
Displacement 2.189 L (2189 cc)
Rated output (continuous) 30.5 kW / 2500 min-1 (41.5 PS / 2500 rpm)
Fuel used/fuel tank capacity Light oil / 70 L
Battery Model 120E41R (12 VDC × 1)
Electric
motor
Motor specifications Three-phase induction motor 380 V 15 kW
Starting method Inverte
r
-controlled (30 Hz to 60 Hz), energy saving mode equipped
(In crane mode: When not operated for 5 minutes, runs at 10 Hz , automatically turns off after 30 minutes)
Safety
device
Ove
r
-winding alarm device / automatic stop device, over un-winding detector, hydraulic automatic locking device, wire rope slinging latch, alarm
buzzer, levelling instrument, overturn alarm device, lock lever, travelling / outrigger / crane changeover switch, outrigger safety device (outrigger
interlock, crane interlock), overload prevention device, tri-colour revolving working status lamp, radio controller transmitter load display, working
radius limiter (with slewing radius limiter)

1-6
3.3 REMOTE CONTROL SPECIFICATIONS
Equipment/Item Remote control
Radio frequency 2402-2480 MHz band
Transmission output 100 mW
Channel spacing 1 MHz
Reachable range of radio waves 100 m or longer (under a good condition where there is no radio interference)
Unique address Extracted and set from 1 million or more addresses at the time of shipment from factory
Waterproof IP65
Transmitter antenna Built-in type
Operating
status display
Status
LED
Battery status display
No reception display
Monitor LED
Receiver power status display
Transmitter power status display
Feedback
Telegram display
Safety device
Emergency stop switch
Misoperation avoidance function during interruption of 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 - 1500 mAh)
Receiver voltage Power of crane main body (12 VDC)
Continuous operating hours of
Transmitter Approximately 20 hours (Changes depending on usage environment)
Ambient operating temperature -20 °C to +70 °C
Transmitter mass Approx. 1.8 kg (including battery)
Operation items of Transmitter
Operation lever
Main boom derricking
Hook raising, lowering
Main boom expansion
Outrigger expansion
Outrigger extension / stowage
Slewing
Push button switch
Radio controller power ON / OFF switch
Engine start / stop switch
Speed selector / outrigger select switch
Load carrying / fly jib change switch
HORN
Emergency stop switch / radio controller power OFF switch
Toggle switch Accelerator control switch
Rotary switch Operation mode selector switch
Dial switch Display operation switch

1-7
4. COMPONENT MASS LIST Unit: kg
Item MC815CWM
Engine assembly
• Engine (without coolant oil)
• Engine accessories
• PTO assembly
• Hydraulic pump
332.2
215
79.8
8.9
28.5
Oil cooler assembly 9.4
Crane frame assembly 1302.5
Operator seat assembly (including seat)
• Operator seat
45.0
10.0
Fuel tank (without fuel) 55.0
Hydraulic oil tank (without hydraulic oil) 37.3
Crane control valve assembly 48.6
Travelling / outrigger control valve assembly 72.9
Slewing system assembly (including slewing bearing,
reducer, and motor)
• Slewing bearing
• Slewing reducer
• Slewing motor
250.1
155.0
60.0
8.8
Rotary centre joint 47.4
Track frame assembly (with track shoe)
• Track frame
• Carrier roller
• Track roller
• Idler cushion assembly (with recoil spring)
• Idler assembly
• Sprocket
• Traveling motor (with reducer)
• Track shoe assembly
1390.2
390.3
3.3×2
7.4×10
13.5×2
55.9×2
12.4×2
54×2
304.7×2
Outrigger assembly (excluding outrigger cylinder) 428.5×4
Boom assembly (with telescopic cylinder assembly) 1732
Winch assembly 214.1
Hook block assembly 84.5
Derrick cylinder assembly 231.4
Telescopic cylinder assembly 417.9
OR cylinder assembly 71.7×4
Slide cylinder assembly 35.9×4
Wire rope (6 ×Fi (29) IWRC O/O S type 10 × 150 m) 66.0
Machine mass (standard) 9460
Machine mass (searcher hook) 9520
Machine mass (engine and electric motor) 9700
Machine mass (fly jib) 9950

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5. OIL AND WATER QUANTITIES LIST
Use of lubricating oil should vary with changes in temperature.
• A specified oil quantity is defined as a total quantity of oil including that for unit piping, and a replacement oil
quantity is defined as a quantity of oil to be replaced at inspection and maintenance.
• Always use SAE10W-CD, SAE10W-30CD, or SAE10W-40CD to start the engine with temperature at 0 °C or
below despite rise in diurnal temperature.
• Be sure to use our recommended abrasion-resistant hydraulic oil for the hydraulic oil system.
ISO VG32 is used when the product was shipped.
• For adjustment of antifreeze concentrations in coolant with temperature at -10 °C or below, see “Inspection and
Maintenance 9.10 Every 1000 Hours Maintenance [1] Cleaning Engine Cooling System”.
6. RATED TOTAL LOAD CHART
・N-mode (normal-mode)
The rated total load table for the extended outrigger applies.
・P-mode (power-mode)
The rated total load table for P-mode applies only within the ranges of 335
to 0°, and 0 to 25°.
Outside the above ranges, the rated total load is the same as for N-mode.

1-9
6.1 6 FALLS
【6 FALL HOOK , OUTRIGGER MAXIMUM EXTENSION 】
In the following table, the numbers for the boom length for the following conditions.
(1) 5.52m boom →boom fully retracted
(1)+(2) 8.99m boom →boom length over 5.52m, less than 8.99m
(1)+(2)+(3) 12.46m boom →boom length over 8.99m, less than 12.46m
(1)+(2)+(3)+(4) 15.93m boom →boom length over 12.46m, less than 15.93m
(1)+(2)+(3)+(4)+(5) 19.40m boom →boom length over 15.93m
Outrigger maximum extension
Boom
length (1) (1)+(2) (1)+(2)+(3) (1)+(2)+(3)+(4) (1)+(2)+(3)+(4)+(5)
Working
Radius
(m)
Mode
N
Mode
P
Mode
N
Mode
P
Mode
N
Mode
P
Mode
N
Mode
P
Mode
N
Mode
P
2.40 8090 8090 6390 6390 4690 4690 －－－－
2.50 7690 7690 6390 6390 4690 4690 3390 3390 －－
3.00 6390 6390 6390 6390 4690 4690 3390 3390 －－
3.50 5490 5490 5490 5490 4690 4690 3390 3390 2390 2390
4.00 4790 4790 4790 4790 4690 4690 3390 3390 2390 2390
4.50 4190 4190 4190 4190 4090 4090 3390 3390 2390 2390
4.92 3790 3790 3790 3790 3690 3690 3390 3390 2390 2390
5.00 －－3790 3790 3690 3690 3390 3390 2390 2390
6.00 －－3190 3190 3090 3090 2790 2790 2390 2390
7.00 －－2690 2690 2590 2590 2390 2390 1990 1990
8.00 －－2290 2290 2090 2190 2090 2090 1690 1690
8.39 －－2090 2090 1890 1990 1890 1990 1590 1590
9.00 －－－－1690 1890 1690 1890 1490 1490
10.00 －－－－1290 1490 1290 1490 1290 1390
11.00 －－－－1040 1190 1040 1190 1040 1190
11.86 －－－－890 1040 890 1040 890 1040
12.00 －－－－－－890 1040 890 1040
13.00 －－－－－－840 990 840 990
14.00 －－－－－－740 840 740 840
15.00 －－－－－－640 740 640 740
15.33 －－－－－－590 690 590 690
16.00 －－－－－－－－590 690
17.00 －－－－－－－－490 590
18.00 －－－－－－－－440 540
18.80 －－－－－－－－340 440
Hook mass: 90 kg

1-10
【6 FALL HOOK , OUTRIGGER MEDIUM EXTENSION 】
In the following table, the numbers for the boom length for the following conditions.
(1) 5.52m boom →boom fully retracted
(1)+(2) 8.99m boom →boom length over 5.52m, less than 8.99m
(1)+(2)+(3) 12.46m boom →boom length over 8.99m, less than 12.46m
(1)+(2)+(3)+(4) 15.93m boom →boom length over 12.46m, less than 15.93m
(1)+(2)+(3)+(4)+(5) 19.40m boom →boom length over 15.93m
Hook mass: 90 kg
Outrigger medium extension
Boom
length (1) (1)+(2) (1)+(2)+(3) (1)+(2)+(3)+(4) (1)+(2)+(3)+(4)+(5)
Working
Radius
(m)
Mode
N
Mode
P
Mode
N
Mode
P
Mode
N
Mode
P
Mode
N
Mode
P
Mode
N
Mode
P
2.40 6290 6290 6290 6290 4590 4590 －－－－
2.50 6290 6290 6290 6290 4590 4590 3290 3290 －－
3.00 6290 6290 6290 6290 4590 4590 3290 3290 －－
3.50 5290 5290 5290 5290 4590 4590 3290 3290 2290 2290
4.00 4590 4590 4590 4590 4590 4590 3290 3290 2290 2290
4.50 3990 3990 3990 3990 3990 3990 3290 3290 2290 2290
4.92 3690 3690 3690 3690 3690 3690 3290 3290 2290 2290
5.00 －－3590 3590 3590 3590 3290 3290 2290 2290
6.00 －－2990 2990 2990 2990 2690 2690 2290 2290
7.00 －－2090 2190 2090 2090 2090 2090 1990 1990
8.00 －－1690 1790 1690 1790 1690 1690 1690 1690
8.39 －－1490 1590 1490 1590 1490 1490 1490 1490
9.00 －－－－1390 1490 1390 1490 1390 1390
10.00 －－－－990 1090 990 1090 990 1090
11.00 －－－－790 890 790 890 790 890
11.86 －－－－590 690 590 690 590 690
12.00 －－－－－－590 690 590 690
13.00 －－－－－－490 590 540 640
14.00 －－－－－－440 540 490 590
15.00 －－－－－－390 490 440 540
15.33 －－－－－－340 440 390 490
16.00 －－－－－－－－390 490
17.00 －－－－－－－－340 390
18.00 －－－－－－－－290 340
18.80 －－－－－－－－240 290