Linkbelt 250X3 A3 Assembly Diagrams Service Manual – PDF DOWNLOAD
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Linkbelt 250X3 A3 Assembly Diagrams Service Manual – PDF DOWNLOAD
Language : English
Pages : 1502
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Linkbelt 250X3 A3 Assembly Diagrams Service Manual – PDF DOWNLOAD
1531514104_j _hydraulic_equipment-oversize_pages 1
A3 Assembly Diagrams 1
J 5
Explanation of Hydraulic Circuit and Operations (standard model) 5
Travel Circuit 6
Travel low-speed circuit 6
Travel high-speed circuit 8
Straight travel circuit 10
Swing Circuit 12
Swing speed limit control circuit 12
Swing relief cut-off control circuit 14
Swing priority circuit 16
Swing brake circuit 18
Swing parking circuit (lever in neutral) 20
Swing parking circuit (brake release) 22
Swing parking circuit (machine stop) 24
Boom Circuit 26
Boom-up circuit (independent operation) 26
Boom-up circuit (compound boom-up + arm-in) 28
Boom-down regenerative circuit 30
Boom-down tilting prevention circuit 32
Boom-down load holding valve circuit 34
Arm Circuit 36
Arm-out circuit 36
Arm-in forced regenerative circuit 38
Arm-in load holding valve circuit 40
Bucket Circuit 42
Bucket-open circuit 42
Bucket-close regenerative circuit 44
Negative Control Circuit 46
Negative control circuit (power save solenoid OFF) 46
Negative control power save circuit (power save solenoid ON) 48
Negative control circuit (bucket close, power save solenoid OFF) 50
Horsepower Boost Circuits 52
Arm-in Horsepower Boost Circuit 52
Travel Horsepower Boost Circuit 54
Other Circuits 56
Cushion circuit (arm-out operation) 56
Cushion circuit (arm-out operation stopped) 58
Cushion circuit (arm-out → arm-in operation) 60
Heat circuit (lever in neutral) 62
Auto pressure boost circuit (bucket close) 64
J 69
Explanation of Hydraulic Circuit and Operations (option) 69
Option Circuits 70
Breaker circuit (independent operation) 70
Double-acting circuit (hydraulic fork) 72
Multi-purpose circuit (breaker Q control) 74
Multi-purpose circuit (2 pumps flow crusher) 76
2nd option circuit (hydraulic rotation fork) 78
1531514277_001_safety_250x3 81
SAFETY 81
SAFETY, GENERAL INFORMATION AND STANDARD TORQUE DATA 84
General Information 85
Safety 85
ROPS 88
ROPS Judgment Method 88
Standard Torque Data For Cap Screws And Nuts 93
Bolt and Nut Tightening 93
1531514304_002_a _lower_250x3 95
A LOWER 95
Specifications 99
250X3 99
Travel Lower Body 99
Main Equipment Table 100
250X3 100
Lower Component 100
Travel Unit 100
Take-up Roller 100
Upper Roller 100
Lower Roller 100
Recoil Spring 100
Shoe 101
Center Joint 101
Main Equipment Structure and Operation Explanation 102
Travel Motor 102
Travel motor operation explanation 102
Explanation of Component Device Operation 102
Double Counter Balance Valve 102
Crossover relief valve 107
Automatic 2-speed Switchover Mechanism 109
Parking Brake Function 113
Piston Motor 114
Reduction Gear 115
Port Diagram 117
Travel Motor 117
Center Joint 117
Basic Functions 118
Travel Speed Selection 118
Travel Alarm 119
Removal and Installation of Track 122
Removal and Installation of Shoe Assembly 122
Removal of Shoe Assembly 122
Installation of Shoe Assembly 123
Removal and Installation of Shoe Plate 125
Removal of Shoe Plate 125
Installation of Shoe Plate 125
Precautions for Shoe Bolt Installation 126
Removal and Installation of Roller 127
Removal and Installation of Upper Roller 127
Removal of Upper Roller 127
Installation of Upper Roller 128
Assembly and Disassembly of Upper Roller 129
Configuration Diagram 130
Dimension Diagram 130
Jig Dimension Diagram 131
Disassembly Procedures 131
Assembly Procedures 133
Removal and Installation of Lower Roller 136
Removal of Lower Roller 136
Installation of Lower Roller 137
Assembly and Disassembly of Lower Roller 138
Configuration Diagram 138
Dimension Diagram 139
Jig Dimension Diagram 139
Disassembly Procedures 140
Assembly Procedures 142
Removal and Installation of Drive Sprocket 145
Removal of Drive Sprocket 145
Installation of Drive Sprocket 146
Removal and Installation of Take-up Roller 147
Removal of Take-up Roller 147
Installation of Take-up Roller 148
Assembly and Disassembly of Take-up Roller 149
Configuration Diagram 150
Dimension Diagram 150
Jig Dimension Diagram 151
Disassembly Procedures 151
Assembly Procedures 154
Removal and Installation of Grease Cylinder 157
Removal of grease cylinder 157
Installation of grease cylinder 158
Assembly and Disassembly of Tension Shock Absorber 159
Configuration Diagram 159
Dimension Diagram 160
Jig Dimension Diagram 160
Disassembly procedures 160
Assembly procedures 161
Removal and Installation of Center Joint 163
Removal of Center Joint 163
Installation of Center Joint 165
Assembly and Disassembly of Center Joint 167
Configuration Diagram 168
Dimension Diagram 169
Jig Dimension Diagram 170
Disassembly Procedures 170
Assembly Procedures 171
Removal and Installation of Travel Motor 174
Removal of Travel Motor 174
Installation of Travel Motor 176
Assembly and Disassembly of Travel Motor 179
Tools for Assembly and Disassembly 179
Standard Tools 179
Secondary Materials 180
Special Tool (jig) 182
Measurement Device 182
Motor Disassembly Procedures 183
Precautions before Motor Disassembly 183
Tightening Torque 184
Disassembly Procedure 185
Maintenance Standards 194
Motor Parts Maintenance Standards 194
Reduction Gear Parts Maintenance Standards 196
Motor Assembly Procedures 198
Precautions before Motor Assembly 198
Assembly Procedure 199
Motor Installation 212
Inspection 212
Hydraulic Oil and Gear Oil Filling 214
Initial Pre-conditioning Operation 215
Troubleshooting 216
Structural Diagram 224
Internal Structure Diagram 227
Part Table 229
Maintenance Standards 230
Drive sprocket 230
Take-up roller 231
Upper roller 232
Lower Roller 233
Track Shoe (Grouser Shoe) 234
Inspection Gauge 235
For Drive Sprocket 235
For Take-up Roller 235
For Upper Roller 236
For Lower Roller 236
Pressure Measurement and Adjustment Procedures 237
Main Pressure Measurement 237
Travel pressure measurement 237
Drain Volume Measurement Procedures 238
Preparations 238
Travel Motor Drain Volume Measurement 238
Air Bleed Procedure 240
Travel Motor 240
1531514314_003_b _c _swing_unit_counterweight_250x3 241
B C SWING UNIT, COUNTERWEIGHT 241
Specifications 244
250X3 244
Upper Side Work System 244
Swing Units 244
Main Equipment Table 245
250X3 245
Upper Component 245
Swing Unit 245
Main Equipment Structure and Operation Explanation 246
Swing Motor 246
Swing Motor Operation Explanation 246
Hydraulic Motor Section 246
Valve Casing Section 246
Brake Section 247
Relief Valve Operation Explanation (relief valve model: KRD22EK10) 248
Swing Motor Internal Structure Diagram 250
Port Diagram 253
Swing motor 253
Basic Functions 254
Swing Brake 254
Swing Lock 255
Swing Speed Limit 256
Free Swing (option) 257
Removal and Installation of Swing Unit 258
Removal of Swing Unit 258
Installation of Swing Unit 260
Assembly and Disassembly of Swing Motor 261
Causes of Trouble and Solutions 262
Maintenance Standard Table 264
Required Tools 265
Jig 266
Disassembly 266
Assembly 268
Swing Motor Internal Structural Diagram 272
Assembly and Disassembly of Swing Unit 274
Disassembly 274
Assembly 275
Assembly and Disassembly of Swing Reduction Gear 277
Disassembly 277
Assembly 280
Swing Reduction Gear Breakdown Diagram 283
Swing Reduction Gear Structure Diagram 284
Removal and Installation of Counterweight 285
Removal of Counterweight 285
Installation of Counterweight 286
Pressure Measurement and Adjustment Procedures 288
Main Pressure Measurement 288
Swing pressure measurement 288
Drain Volume Measurement Procedures 289
Preparations 289
Swing Motor Drain Volume Measurement 289
Air Bleed Procedure 290
Swing Motor 290
1531514334_004_h _engine_250x3 291
H ENGINE 291
Specifications 296
250X3 296
Engine 296
Cooling System 296
Capacities, Filters 296
Coolant and Oil Capacities 296
Fuel Filter 296
Main Equipment Table 297
250X3 297
Engine-related 297
Engine 297
DPD 297
Air Cleaner (double element) 297
Radiator 297
Basic Functions 298
Fuel Gauge 298
Coolant Temperature Gauge 300
DPD Gauge 302
Fuel Economy Gauge 303
Neutral Start 304
Engine Start/Stop Control 305
Power-cut Delay 306
Preheating 307
Throttle 308
Engine Throttle Switch Position Detection 309
Idling Start 315
Auto Idle 316
One-touch Idle 316
Auto Warm Up 318
Quick Warm Up 318
Idling Stop 320
Idle up 322
Work Mode Control 323
Engine Emergency Stop 325
Coolant Level Reduction 325
Engine Air Filter Clog 325
Fuel Filter Clog 326
DPD Regeneration 328
Automatic Regeneration 329
Manual Regeneration 331
Optional Manual Regeneration 333
Hydraulic Assisting Load 335
Main Data 336
Function, structure, and operations 338
Symptom 395
Frequent Manual DPD Regeneration 395
DPD Regeneration Taking Excessively Long 396
Engine Start Problems 397
Engine Stalling 399
Engine Hunting, Rough Idling 401
Excess Amount of White Smoke in Exhaust Gas 403
Excess Amount of Black Smoke in Exhaust Gas 403
Abnormal Noise 404
High Fuel Consumption 405
High Oil Consumption 406
Engine Output Deficiency 407
Functional Inspection 409
Inspection of Scan Tool Power Supply System 409
Start Circuit System Inspection 409
Engine Compression Pressure Inspection 410
Start System Inspection 411
Fuel System Inspection 411
Suction air system inspection 412
Exhaust system inspection 412
Inspection of EGR Control System 412
Glow Control System Inspection 413
DPD Function Inspection 414
OBD System Check 416
Inspection of the monitor warning light illumination circuit system 417
Inspection of the monitor warning light blinking circuit system 417
Maintenance precautions 419
Removal and Installation of Engine Assembly 422
Removal of Engine Assembly 422
Installation of Engine Assembly 427
Removal and Installation of Fuel Cooler, Engine Intercooler, Radiator, and Oil Cooler 428
Removal and Installation of Fuel Cooler 428
Removal of Fuel Cooler 428
Installation of Fuel Cooler 429
Removal and Installation of Engine Intercooler 429
Removal of Intercooler 429
Installation of Inter Cooler 429
Removal and Installation of Radiator 430
Removal of Radiator 430
Installation of Radiator 433
Removal and Installation of Oil Cooler 433
Removal of Oil Cooler 434
Installation of Oil Cooler 437
Removal and Installation of Turbo Charger 440
Turbocharger assembly Removal 440
Turbocharger assembly Installation 441
Removal and Installation of EGR Valve 444
EGR valve Removal 444
EGR valve Installation 445
Removal and Installation of Engine Hood 448
Removal of Engine Hood 448
Installation of Engine Hood 449
Removal and Installation of Muffler 450
Removal of Muffler 450
Installation of Muffler 450
Removal and Installation of Cylinder Head Cover 452
Cylinder head cover Removal 452
Installation of Cylinder Head Cover 452
Removal and Installation of Cylinder Head 453
Removal of Cylinder Head 453
Disassembly of Cylinder Head 461
Assembly of Cylinder Head 466
Installation of Cylinder Head 473
Inspection 488
Removal and Installation of Cylinder Block 494
Removal of Cylinder Block 494
Installation of Cylinder Block 509
Inspection 542
Lubrication System 544
Removal and Installation of Oil Pan 544
Removal of Oil Pan 544
Installation of Oil Pan 544
Removal and Installation of Oil Level Switch 544
Removal of Oil Level Switch 544
Installation of Oil Level Switch 545
Removal and Installation of Oil Pump Assembly 545
Removal of Oil Pump Assembly 545
Disassembly of Oil Pump Assembly 557
Assembly of Oil Pump Assembly 557
Installation of Oil Pump Assembly 557
Inspection 580
Engine oil Inspection 581
Removal and Installation of Oil Port Cover 581
Removal of Oil Port Cover 581
Installation of Oil Port Cover 581
Cooling System 583
Removal and Installation of Water Pump Assembly 583
Removal of Water Pump Assembly 583
Installation of Water Pump Assembly 584
Inspection of Water Pump Assembly 585
Removal and Installation of Thermostat 586
Removal of Thermostat 586
Installation of Thermostat 586
Inspection 587
Inspection of Coolant 587
Inspection of Cooling Fan Belt 589
Removal and Installation of Overheat Switch 589
Removal of Overheat Switch 589
Installation of Overheat Switch 589
Removal and Installation of Exhaust Manifold 590
Removal of Exhaust Manifold 590
Installation of Exhaust Manifold 592
Inspection 596
Disassembly, Removal and Installation of DPD Assembly 597
Disassembly of DPD Assembly 597
Assembly of DPD Assembly 598
Inspection 601
Removal and Installation of Fuel Tank 602
Removal of Fuel Tank 602
Installation of Fuel Tank 605
Removal and Installation of Fuel Supply Pump 606
Removal of Fuel Supply Pump 606
Installation of Fuel Supply Pump 607
Removal and Installation of Common Rail Assembly 610
Removal of Common Rail Assembly 610
Installation of Common Rail Assembly 612
Removal and Installation of Injector 617
Removal of injector 617
Installation of Injector 621
Removal and Installation of Starter Motor 626
Removal of Starter Motor 626
Installation of Starter Motor 627
Removal and Installation of Alternator 628
Removal of Alternator 628
Installation of Alternator 629
Preheating System 630
Removal and Installation of Glow Plug 630
Removal of Glow Plug 630
Installation of Glow Plug 630
Glow plug Inspection 630
Introduction to the trouble diagnosis 631
Removal and Installation of Suction Control Valve 639
Removal of Suction Control Valve 639
Installation of Suction Control Valve 640
Removal and Installation of Fuel filter pressure 641
Fuel filter pressure sensor Removal 641
Fuel filter pressure sensor Installation 642
Removal and Installation of Engine coolant temperature sensor 642
Engine coolant temperature sensor Removal 642
Engine coolant temperature sensor Installation 642
Engine coolant temperature sensor Inspection 642
Removal and Installation of CKP sensor 643
CKP sensor Removal 643
CKP sensor Installation 643
CKP sensor Inspection 643
Removal and Installation of CMP sensor 643
CMP sensor Removal 643
CMP sensor Installation 644
CMP sensor Inspection 644
Removal and Installation of Oil pressure sensor 644
Oil pressure sensor Removal 644
Oil pressure sensor Installation 644
Oil pressure sensor Inspection 644
Removal and Installation of Boost sensor 645
Boost sensor Removal 645
Boost sensor Installation 645
Removal and Installation of Boost temperature sensor 646
Boost temperature sensor Removal 646
Boost temperature sensor Installation 646
Removal and Installation of IMT sensor 646
IMT sensor Removal 646
IMT sensor Installation 646
Removal and Installation of Exhaust differential pressure sensor 647
Exhaust differential pressure sensor Removal 647
Exhaust differential pressure sensor Installation 647
Exhaust differential pressure sensor Inspection 648
Removal and Installation of Exhaust gas temperature sensor 648
Removal of Exhaust Gas Temperature Sensor 648
DPD temperature sensor Installation 649
Exhaust gas temperature sensor Inspection 650
Engine-side Diagnostic Trouble Code List 651
Troubleshooting – engine 653
Engine-side Trouble 653
Diagnostic Trouble Code 0016 Abnormally Correlation Between Crankshaft Position and Camshaft Position 653
Diagnostic trouble code 0045 – Turbocharger Boost Pressure Control System Abnormality 654
Diagnostic Trouble Code 0087 Fuel Rail System Pressure Low Pressure Error 656
Diagnostic Trouble Code 0088 Fuel Rail System Pressure High Pressure Error 659
Diagnostic Trouble Code 0091 Fuel Rail Pressure Regulator Control System Low Input 662
Diagnostic Trouble Code 0092 Fuel Rail Pressure Regulator Control System High Input 663
Diagnostic Trouble Code 0093 Fuel System Leak Detection 665
Diagnostic Trouble Code 0102 Mass Air Flow Sensor System Low Input 668
Diagnostic Trouble Code 0103 Mass Air Flow Sensor System High Input 669
Diagnostic Trouble Code 0112 Intake Temperature Sensor System Low Input 670
Diagnostic Trouble Code 0113 Intake Temperature Sensor System High Input 670
Diagnostic Trouble Code 0117 Engine Coolant Temperature Sensor System Low Input 671
Diagnostic Trouble Code 0118 Engine Coolant Temperature Sensor System High Input 672
Diagnostic Trouble Code 0122 Throttle Sensor System Low Input 673
Diagnostic Trouble Code 0123 Throttle Sensor System High Input 674
Diagnostic Trouble Code 0182 Fuel Temperature Sensor System Low Input 675
Diagnostic Trouble Code 0183 Fuel Temperature Sensor System High Input 676
Diagnostic Trouble Code 0192 Fuel Rail Pressure Sensor System Low Input 677
Diagnostic Trouble Code 0193 Fuel Rail Pressure Sensor System High Input 678
Diagnostic Trouble Code 0201 Injector First Cylinder System Error 679
Diagnostic Trouble Code 0202 Injector Second Cylinder System Error 680
Diagnostic Trouble Code 0203 Injector Third Cylinder System Error 682
Diagnostic Trouble Code 0204 Injector Fourth Cylinder System Error 683
Diagnostic Trouble Code 0217 Engine Coolant High Temperature Error 685
Diagnostic Trouble Code 0219 Engine High Rpm Error 686
Diagnostic Trouble Code 0234 Turbocharger High Boost Pressure Abnormality 687
Diagnostic Trouble Code 0237 Boost Sensor Circuit Low Input 688
Diagnostic Trouble Code 0238 Boost Sensor Circuit High Input 689
Diagnostic Trouble Code 0299 Turbocharger Low Boost Pressure Abnormality 690
Diagnostic Trouble Code 0335 Crankshaft Position Sensor System Error 692
Diagnostic Trouble Code 0340 Camshaft Position Sensor System Error 693
Diagnostic Trouble Code 0380 Glow Plug System Error 695
Diagnostic Trouble Code 0404 EGR1 Control System Error 696
Diagnostic Trouble Code 0409 EGR1 Position Sensor System Error 697
Diagnostic Trouble Code 0411 Turbocharger Control Module Signal Error 698
Diagnostic Trouble Code 041C IMT Sensor System High Input 699
Diagnostic Trouble Code 041D IMT Sensor System Low Input 700
Diagnostic Trouble Code 0426 Pre-filtered Exhaust Gas High Temperature Error 701
Diagnostic Trouble Code 0427 Exhaust Temperature Sensor 1 System Low Input (pre-filter) 701
Diagnostic Trouble Code 0428 Exhaust Temperature Sensor 1 System High Input (pre-filter) 702
Diagnostic Trouble Code 042B Exhaust Gas High Temperature Error Before Oxidation Catalyst 704
Diagnostic Trouble Code 042C Exhaust Temperature Sensor 2 System Low Input (before oxidation catalyst) 704
Diagnostic Trouble Code 042D Exhaust Temperature Sensor 2 System High Input (before oxidation catalyst) 705
Diagnostic Trouble Code 0522 Oil Pressure Sensor System Low Input 707
Diagnostic Trouble Code 0523 Oil Pressure Sensor System High Input 708
Diagnostic Trouble Code 0560 System Voltage Abnormality (12 V system) 709
Diagnostic Trouble Code 0563 System Voltage High Input 710
Diagnostic Trouble Code 0601 Control Module Memory Checksum Error 711
Diagnostic Trouble Code 0602 Control Module Program Error 711
Diagnostic Trouble Code 0604 Control Module RAM Error 712
Diagnostic Trouble Code 0606 Control Module Processing Device Error 712
Diagnostic Trouble Code 060B Control Module A/D Converter Processing System Characteristics Error 713
Diagnostic Trouble Code 0638 Throttle Actuator Control System Characteristic Error 713
Diagnostic Trouble Code 0641 Sensor Voltage System Error (reference 1) 715
Diagnostic Trouble Code 0651 Sensor Voltage System Error (reference 2) 716
Diagnostic Trouble Code 0685 ECM Main Relay Control System Low Input 717
Diagnostic Trouble Code 0687 ECM Main Relay Control System High Input 718
Diagnostic Trouble Code 0697 Sensor Voltage System Error (reference 3) 719
Diagnostic Trouble Code 1093 Fuel Rail Pressure Low Pressure Error 720
Diagnostic Trouble Code 1112 Boost Temperature Sensor System Low Input 723
Diagnostic Trouble Code 1113 Boost Temperature Sensor System High Input 724
Diagnostic Trouble Code 1261 Injector Group 1 Voltage Control System Error 725
Diagnostic Trouble Code 1262 Injector Group 2 Voltage Control System Error 725
Diagnostic Trouble Code 1293 Fuel Filter Pressure Sensor System Low Input 726
Diagnostic Trouble Code 1294 Fuel Filter Pressure Sensor System High Input 727
Diagnostic Trouble Code 1404 EGR 1 Close Position Characteristic Error 728
Diagnostic Trouble Code 1455 PM Over Caught 2 729
Diagnostic Trouble Code 1471 DPD Regeneration Error 731
Diagnostic Trouble Code 1621 Control Module EEPROM Error 733
Diagnostic Trouble Code 1655 Sensor Voltage System Error (reference 4) 734
Diagnostic Trouble Code 2146 Injector Group 1 Voltage Control System Error 735
Diagnostic Trouble Code 2149 Injector Group 2 Voltage Control System Error 737
Diagnostic Trouble Code 2228 Atmospheric Pressure Sensor System Low Input 738
Diagnostic Trouble Code 2229 Atmospheric Pressure Sensor System High Input 739
Diagnostic Trouble Code 242F PM Over Collection 740
Diagnostic Trouble Code 2452 DPD Differential Pressure Sensor System Error 743
Diagnostic Trouble Code 2453 DPD Differential Pressure Sensor System Characteristic Error 744
Diagnostic Trouble Code 2454 DPD Differential Pressure Sensor System Low Input 746
Diagnostic Trouble Code 2455 DPD Differential Pressure Sensor System High Input 747
Diagnostic Trouble Code 2456 DPD Differential Pressure Sensor Learning Position Error 748
Diagnostic Trouble Code 2458 DPD Regeneration Time Abnormality 749
Diagnostic Trouble Code 0001 CAN Bus Error 750
Diagnostic Trouble Code 0073 CAN Bus Error 751
Diagnostic Trouble Code 0101 TCM Communication Error 752
Diagnostic Trouble Code 0110 Turbocharger Control Module Communication Abnormality 753
Data Reference Values 755
Idle Speed 755
Dual Pump Relief 756
1531514353_005_j _hydraulic_equipment_pump_operation_system_valve_250x3 759
J HYDRAULIC EQUIPMENT (PUMP, OPERATION SYSTEM VALVE) 759
Specifications 764
250X3 764
Operating Device 764
Hydraulic Equipment 765
Hydraulic Device 765
Control Valve and Cylinder 765
Capacities, Filters 765
Hydraulic Filters 765
Main Equipment Table 766
250X3 766
Hydraulic Device 766
Hydraulic Pump 766
Control-related 766
Control Valve 766
Solenoid Valve (5 stack) 767
Valve for Left/Right Operations 767
Remote Control Valve for Travel Operations 767
Remote Control Valve Characteristic Diagram 768
Operation Remote Control Valve Control Diagram 768
Travel Remote Control Valve Control Diagram 769
Cushion Valve (heat circuit, with shuttle valve) 769
Selector Valve (option) 769
Basic Functions 770
Oil Temperature Gauge 770
Static Horsepower Control 771
Pressure Boost Control 772
Pump Standby Pressure Control 775
Swing Relief Cut 778
Boom Down Energy Save 779
Auto Energy Save 780
Stroke Control 781
Feed Pump Automatic Stop 783
Hydraulic Fluid Filter Clog 783
Solenoid Sticking Prevention 785
Hot Shutdown Warning 786
Breaker Mode 787
Crusher Mode 787
Port Diagram 788
Hydraulic Pump (standard model) 788
Control Valve 789
Relief Valve 789
5 Stack Solenoid Valve 792
2 Stack Solenoid Valve 793
Remote Control Valves (upper, travel) 794
Remote Control Valves (left-right) 794
Remote Control Valve (travel) 794
Reducing Valve (3 stack) 795
Cushion Valve 795
2-way Selector Valve 796
Direction Valve 796
Shut-off Valve 797
Relief Valve (electromagnetic proportional) 797
Manifold Under Cab 798
Manifold (accumulator section) 798
Manifold (hydraulic tank section) 799
Hydraulic Device 800
Pump P-Q Diagram 800
Main Equipment Structure and Operation Explanation 801
Hydraulic Pump 801
Structure and Operation Explanation 801
Hydraulic Pump Internal Structure Diagram 802
Overall View 802
Drive Shaft Front Side 803
Drive Shaft Rear Side 804
Part Table 805
Regulator 806
Regulator Operation Explanation 806
Regulator Operation Explanation Diagram 809
Front Side Regulator Internal Structure Diagrams 810
Rear Side Regulator Internal Structure Diagram 812
Gear Pump 814
Gear Pump Internal Structure Diagram 814
Structure and Operation Explanation 815
Control Valve 816
Basic configuration 816
Operation 816
5 Stack Solenoid Valve Operation Explanation 851
External Shape Diagram and Component Parts 851
Operation Explanation 852
Upper Pilot Valve (remote control valve) 853
Structure 853
Function 853
Operation 854
Structural Diagram 857
Travel Pilot Valve (remote control valve) 858
Operation 858
Pressure Reduction Valve Section 859
Operating Section Damping Mechanism Section 859
Structural Diagram 862
Cushion Valve 863
Structure 863
Operation Explanation 864
Pressure Bleeding Operations 868
Removal and Installation of Hydraulic Tank 869
Removal of Hydraulic Tank 869
Installation of Hydraulic Oil Tank 873
Removal and Installation of Hydraulic Pump 874
250X3 874
Removal of Hydraulic Pump 874
Installation of Hydraulic Pump 877
Removal and Installation of Pump Coupling 880
Removal of Pump Coupling 880
Installation of Pump Coupling 881
Removal and Installation of Control Valve 883
Removal of Control Valve 883
Installation of Control Valve 885
Removal and Installation of Pilot Blocs 888
Removal and Installation of Travel Remote Control Valve 889
Removal of Travel Remote Control Valve 889
Installation of Travel Remote Control Valve 890
Removal and Installation of Operation Remote Control Valve 892
Removal of Operation Remote Control Valve (Left) 892
Installation of Operation Remote Control Valve (Left) 894
Removal of Operation Remote Control Valve (right side) 896
Installation of Operation Remote Control Valve (right side) 898
Removal and Installation of 5 Stack Solenoid 900
Removal of 5 Stack Solenoid Valve 900
Installation of 5 Stack Solenoid Valve 902
Removal and Installation of Cushion Valve 905
Removal of Cushion Valve 905
Installation of Cushion Valve 906
Procedures for Assembly and Disassembly of Hydraulic Pump Main Unit 909
Tools 909
Disassembly procedures 909
Assembly procedures 911
Pump Main Unit Maintenance Standards 914
Replacement standards for worn parts 914
Standards for repairing cylinders, valve plates, and swash plates (shoe plates) 914
Tightening torque 915
Overall View 916
Attached diagram 1 pump assembly cross-section diagram 916
Drive Shaft Front Side 917
Drive Shaft Rear Side 918
Part Table 919
Operation explanation 920
Regulator adjustment 923
Tables and diagrams 925
Regulator Assembly and Disassembly Procedures 929
Tools 929
Disassembly preparations 929
Disassembly procedures 929
Assembly procedures 931
Diagram 1 Front-side regulator assembly cross-section diagram (KR3K-9Y04-HV) 934
Diagram 2 Rear-side regulator assembly cross-section diagram (KR3K-9Y04-HV) 937
Procedures for Assembly and Disassembly of Control Valve 940
Disassembly 940
Cautions for disassembly 940
Disassembly procedure 940
Removal of long cap and pull out of main spool 940
Disassembly of arm 1 parallel-tandem spool, neutral cut spool section 941
Disassembly of arm regeneration release valve section 941
Disassembly of load check valve section 942
Disassembly of antidrift valve section 942
Disassembly of relief valve 943
Disassembly of option section 943
Disassembly of straight travel signal control valve 943
Disassembly of other plugs 943
Disassembly of add-on section 943
Disassembly of valve housing union bolt 944
Cleaning 944
Inspection 944
Cautions for Assembly 944
Cautions for O-Ring handling 944
Cautions for spool handling 944
Adhesive Application Method (for male thread section and female thread section of parts requiring adhesion) 944
Procedure for assembly of sub-assembly 945
Assembly of spool assembly (main spool) 945
Assembly of arm 1 parallel-tandem spool assembly 945
Assembly of neutral cut spool assembly 945
Assembly of antidrift valve assembly 946
Procedure for assembly of control valve main unit 946
Assembly of relief valve 946
Assembly of load check valve 946
Assembly of antidrift valve 947
Assembly of option section 947
Assembly of arm regeneration release valve 947
Assembly of arm 1 parallel-tandem spool 947
Assembly of neutral cut spool 947
Assembly of main spool 947
Assembly of straight travel signal control valve 948
Assembly of add-on section 948
Assembly of other plugs 948
Internal Structure Diagram 949
Parts List 956
Relief valve 957
Procedures for assembly and disassembly of main relief valve 957
Procedures for assembly and disassembly of overload relief valve 958
Procedures for assembly and disassembly of low-pressure relief valve 958
Procedures for assembly and disassembly of add-on main relief valve 959
Relief valve adjustment 960
Installation 960
Run 960
Troubles and Countermeasures 960
Procedures for Assembly and Disassembly of Operation Remote Control Valve 962
Maintenance Procedures 962
Required Tools and Tightening Torque 962
Maintenance Standards 963
Disassembly Procedures 964
Assembly Procedures 966
Causes of Trouble and Countermeasures 969
Procedures for Assembly and Disassembly of Travel Remote Control Valve 973
Maintenance Procedures 974
Disassembly Procedures 974
Assembly Procedures 978
Causes of Trouble and Countermeasures and Cross-section Diagram 983
Assembly and Disassembly of Cushion Valve 986
Disassembly Procedures 986
Reverse Operation Spool Section 986
Check Plunger Section with Throttle 986
Shuttle Valve Section 986
Assembly Procedures 987
Reverse Operation Spool Section 987
Check Plunger Section with Throttle 987
Shuttle Valve Section 987
Written Materials 988
Pressure Measurement and Adjustment Procedures 990
Procedures for Pressure Measurement from the Monitor Display 990
Monitor and Switch Panel 990
Pressure Measurement Method 990
Operating Method 990
PROCEDURES FOR MEASURING HYDRAULIC OIL TEMPERATURE FROM THE MONITOR DISPLAY 991
Hydraulic Oil Temperature Measurement Method 991
Operating Method 991
Procedures for Pressure Measurement by Installing Pressure Gauge 992
Preparations 992
Items to prepare 992
Pressure Measuring Port 993
Control Valve 995
Location of Relief Valves 995
Pressure Measurement Preparations 997
Pressure Measurement 998
Main Pressure Measurement 998
A Attachment Pressure Measurement 1000
Boom-down pressure measurement 1001
Option line pressure measurement 1001
Pilot Pressure Measurement 1001
Installation of Pressure Gauge 1001
Negative Control Pressure Measurement 1002
Pressure gauge installation 1002
Pressure Adjustment 1002
Main Pressure Adjustment 1002
Pressure measurement and adjustment preparation work 1003
Main relief pressure adjustment 1004
Overload relief pressure adjustment 1005
Swing Relief Pressure Adjustment 1006
Pilot Pressure Adjustment 1007
Hydraulic Pump Flow Measurement Procedures 1008
Preparations 1008
Items to Prepare 1008
Work Preparations 1009
Flow Measurement 1010
Air Bleed Procedure 1012
Hydraulic Pump 1012
Check 1012
Hydraulic Equipment Layout 1013
Overall view 1014
Pump Chamber Hydraulic Equipment Layout 1015
Swing Body Center Section Hydraulic Equipment Layout 1017
HOUSING LEFT SIDE HYDRAULIC EQUIPMENT LAYOUT 1018
LAYOUT OF HYDRAULIC EQUIPMENT IN CAB 1019
1531514370_006_n _cab_250x3 1021
N CAB 1021
Removal and Installation of Operator’s Seat 1024
Removal of Operator’s Seat 1024
Installation of Operator’s Seat 1024
Removal and Installation of Cab Assembly 1025
Removal of Cab Assembly 1025
Installation of Cab Assembly 1029
Removal and Installation of Wiper 1030
Removal of Wiper 1030
Installation of wiper 1030
Removal and Installation of Cab Front Glass 1031
Removal of Cab Front Glass 1031
Installation of Cab Front Glass 1032
Removal and Installation of Right-side Window Glass 1033
Removal of Right-side Window Glass 1034
Installation of Right-side Window Glass 1035
Removal and Installation of Door (Upper) Sash Glass 1038
Removal of Door (Upper) Sash Glass 1039
Installation of Door (Upper) Sash Glass 1040
Window Lock Adjustment Procedures 1043
Window Lock (front side) 1043
Window Lock (rear side) 1043
Tightening torque 1045
1531514396_007_r _electrical_parts_250x3 1047
R ELECTRICAL PARTS 1047
Electrical and Engine Functions and Service Support 1052
Basic Functions 1053
Monitor Display Dimming 1053
Eco Gauge 1054
Diagnostic Trouble Code Indicator 1055
Clock 1055
Accessories 1056
Working Light 1056
Room lamp 1057
Radio Mute 1059
Wiper and Washer 1060
Horn 1061
Back/Side View Monitor 1062
Precautions When Installing the Camera 1062
Anti-theft 1063
Enabling the anti-theft function 1063
Password 1063
Immobilizer Key 1064
Battery Disconnect Switch 1065
Reset 1066
Half Reset/All Reset 1066
Milli-amp List 1067
Safety 1069
Lever Lock 1069
Alternator Power Generation Detection 1070
Service Support 1072
Screen Operations 1072
Screen Display List 1072
CHECK Screen List 1073
MACHINE STATUS 1073
FAULT HISTORY 1077
WORK HISTORY 1078
ENGINE HISTORY 1080
HYDRAULIC HISTORY 1084
PART NUMBER 1086
List of Control Unit Screens 1087
CONTROLLER A 1088
CONTROLLER B 1091
MONITOR 1093
ECM 1095
AIR CONDITIONER 1095
COMMUNICATION 1096
SETUP Screen List 1097
MACHINE SELECT 1097
PARAMETERS 1101
RESET Screen List 1103
Setting 1104
Model Selection 1104
Throttle Volume Default Setting Value 1109
Password Setting 1109
Clock Adjustment 1110
Parameter Setting 1110
Option Flow Pressure Setting 1113
Screen Brightness Setting 1116
Service Monitor 1117
How to get into “Service Screen” 1117
General Operation on Service Monitor 1117
Engine Service Monitor 1118
Service Monitor Structure 1118
ENGINE INFORMATION 1119
Data Confirmation 1119
Data Transfer (Copy) 1119
QR (INJECTOR) CODE 1121
Injector Number 1121
Screen Layout 1121
Data Source Selection 1122
Manual Input 1122
DEVICE TEST 1123
Common Rail Pressure Test 1123
Injector Balance Test 1124
Injector Forced Drive Test 1125
ECM Memory Clear 1125
DPD Slow Regeneration 1126
DPD Manual Regeneration 1127
DPD Automatic Regeneration 1128
EGR Valve Control Test (if equipped) 1129
VG Turbo Control Test 1130
Intake Throttle Control Test 1131
Turbo Boost Test 1132
Computer Explanation 1133
Connection Connector Pin Layout 1139
Computer A 1139
Computer B 1140
Monitor 1141
Sequence Circuit Diagram 1142
Code table 1142
Overall 1144
Block diagram 1146
Computer A 1146
Computer B 1147
ECM 1148
Monitor 1149
Air Conditioner 1150
Lever Lock 1151
Horn 1151
Working lights 1151
Option 1152
Other 1153
Electrical Symbol List 1154
Electrical Equipment Layout Diagram 1155
Main Unit Left Side Layout Diagram (radiator chamber) 1155
Engine Section Layout Diagram 1157
Main Unit Right Side Layout Diagram (pump chamber) 1160
Main Unit Center Section Layout Diagram 1161
Cab Layout Diagram 1 1162
Cab Layout Diagram 2 1164
Layout Around Operator Seat 1166
Stand Alone Parts Diagram 1167
Removal and Installation of Wiper Controller 1186
Removal of Wiper Controller 1186
Installation of wiper controller 1186
Removal and Installation of Wiper Motor 1187
Removal of Wiper Motor 1187
Installation of wiper motor 1188
Removal and Installation of Monitor 1189
Removal of Monitor 1189
Installation of Monitor 1190
ECM Replacement Procedure 1191
Removal and Installation of ECM 1192
Removal of ECM 1192
Installation of ECM 1192
Removal and Installation of Computer A 1193
Removal of Computer A 1193
Installation of Computer A 1193
Removal and Installation of Computer B 1194
Removal of Computer B 1194
Installation of Computer B 1194
Air Conditioner Overall Diagram 1195
Frame 1195
Cab 1197
Equipment Layout Diagram 1200
Circuit Diagram 1202
Air Conditioner Circuit Diagram 1202
Explanation of Functions 1204
Explanation of Control 1204
Air Mix Motor Actuator Control 1205
Blow Mode Motor Actuator Control 1205
Refresh/Recirculate Switch Motor Actuator Control 1206
Blower Amp Control 1207
Compressor Clutch Control 1209
COOLMAX Control and HOTMAX Control 1210
Abnormality Detection and Control after Abnormality Detected 1210
Monitor Mode 1214
Door Switch Control 1215
Inside Air Filter Clogging Detection Control 1216
Actuator Inspection 1219
Air Mix Motor Actuator Inspection 1219
Refresh/Recirculate Switch Motor Actuator Inspection 1220
Mode Motor Actuator Inspection 1221
Self-diagnosis Function with Panel Display 1222
Abnormality Display and Self-check Procedures 1222
Abnormality Display Position 1222
Explanation of Abnormality Display 1222
Motor Actuator Abnormality 1222
Sensor Abnormality 1223
Explanation of Monitor Mode 1223
Monitor Mode Display Position 1223
Monitor Mode Display Operating Method 1224
Display Contents in Monitor Mode 1225
Air Conditioner Troubleshooting 1226
Part Function and Good/Poor Judgment 1231
Control Panel 1231
Blower Amp 1231
Relay 1232
Air Mix Actuator 1233
Refresh/Recirculate Actuator 1234
Blow Mode Actuator 1234
Evaporator Sensor 1235
Dual Pressure Switch 1235
Solar Radiation Sensor 1236
Inside Air Sensor 1237
Assembly and Disassembly of Unit 1238
Removal of Blower Unit 1238
Replacement of Blower Motor 1238
Replacement of Blower Amp 1238
Removal of Heater Core 1239
Removal of Heat Case Right/Left 1239
Replacement of Evaporator and Expansion Valve 1239
Installation of Evaporator Sensor 1240
Replacement of Motor Actuator 1240
Removal and Installation of Compressor 1241
Removal of Compressor 1241
Installation of Compressor 1241
Removal and Installation of Condenser 1242
Removal of Condenser 1242
Installation of Condenser 1243
Removal and Installation of Receiver Dryer 1244
Removal of Receiver Dryer 1244
Installation of Receiver Dryer 1245
Work Precautions 1246
Work Procedures 1247
Air Conditioner Refrigerant Filling is Divided into the “Vacuum Operation” and “Gas Filling Operation” 1247
Operation Chart 1247
Tools 1248
Filling Procedures 1249
Charging Hose Connection Positions 1249
Gauge Manifold Connection 1249
Vacuuming 1250
Gas Filling Operation, High-pressure Side 1251
Gas Filling Operation, Low-pressure Side 1252
1531514423_008_v _attachments_250x3 1255
V ATTACHMENTS 1255
Main Equipment Table 1258
250X3 1258
Backhoe Attachment 1258
Cylinder 1258
Maintenance Standards 1259
Attachment (backhoe) 1259
1 Boom and Swing Frame Installation Section 1260
2 Boom Cylinder and Swing Frame Installation Section 1261
3 Boom and Boom Cylinder Installation Section 1262
4 Boom and Arm Cylinder Installation Section 1263
5 Boom and Arm Installation Section 1264
6 Arm and Arm Cylinder Installation Section 1265
7 Arm and Bucket Cylinder Installation Section 1266
8 Arm and Arm Link Installation Section 1267
9 Bucket and Bucket Link Installation Section 1268
10 Bucket Link and Bucket Cylinder Installation Section 1269
11 Bucket and Arm Installation Section 1270
Removal and Installation of Bucket Cylinder 1271
Removal of Bucket Cylinder 1271
Installation of Bucket Cylinder 1273
Removal and Installation of Arm Cylinder 1274
Removal of Arm Cylinder 1274
Installation of Arm Cylinder 1276
Removal and Installation of Boom Cylinder 1278
Removal of Boom Cylinder 1278
Installation of Boom Cylinder 1280
Procedures for Operation/Assembly and Disassembly of Hydraulic Cylinder (made by KYB) 1283
Specifications and Structure Diagram (including the assembly diagram and parts table) 1283
Basic functions 1283
Function of Each Location 1283
Cylinder Head Assembly 1283
Piston Assembly 1284
Pipe Assembly 1286
Handling Precautions 1287
Precautions for Installing the Cylinder on the Machine Body 1287
Usage Cautions 1287
Maintenance and Inspection Cautions 1288
Maintenance Inspection and Service 1289
Trouble Diagnostics 1290
Storage Standards 1294
Storing Parts Individually (In principle, store indoors ) 1294
When Mounted on Vehicle Body 1295
Recommended Anti-rust Oil 1295
Assembly and Disassembly Procedures 1295
Preparations ····· Prepare the Following before Starting Disassembly 1295
General Work Precautions 1295
Maintenance Standards 1295
Inspection after Assembly 1296
Required Tool 1297
General Tool 1297
Special Jig 1299
Special Jigs Part Number List 1300
Disassembly Procedures 1301
Drain the Oil 1301
Secure the Cylinder 1301
Removal of Cylinder Head 1301
Pull out the Piston Rod 1301
Fasten the Piston Rod 1302
Remove the Piston Nut 1302
Removal of Piston etc 1302
Disassembly of the Retraction Side Cushion Ring 1303
Remove the Piston Seal 1303
Disassembly of the Buffer Ring 1303
Disassembly of U-ring and Wiper Ring 1303
Removal of O-ring and Backup Ring 1303
Disassembly of Bushing 1303
Removal of Pin Bushing 1304
Cleaning and Storage 1304
Assembly Procedures 1305
Installation of Pin Bushing 1305
Replacement of Seals 1305
Assembly of Cylinder Head Assembly 1305
Assembly of Piston Assembly 1306
Assembly of Piston Rod Assembly 1306
Insertion of Piston Rod into the Tube 1308
Cylinder Head Tightening 1308
Installation of Line 1308
Test Operation 1309
Usage Limits 1310
Structural Diagram 1312
Boom Cylinder 1312
Arm Cylinder 1314
Bucket Cylinder 1316
Port Diagram 1318
HBCV 1318
Removal and Installation of HBCV 1319
Removal and Installation of Arm HBCV 1319
Removal of Arm HBCV 1319
Installation of arm HBCV 1319
Removal and Installation of Boom HBCV 1320
Removal of Boom HBCV 1320
Installation of boom HBCV 1321
Air Bleed Procedure 1322
HBCV 1322
Boom Cylinder HBCV 1322
Arm Cylinder HBCV 1323
Removal and Installation of Bucket 1324
Removal of Bucket 1324
Installation of Bucket 1324
Removal and Installation of Bucket Link 1326
Removal of Bucket Link 1326
Installation of Bucket Link 1326
Removal and Installation of Arm 1328
Removal of Arm 1328
Installation of Arm 1329
Removal and Installation of Boom 1330
Removal of Boom 1330
Installation of Boom 1332
1531514437_009_z _other_250x3 1337
Z OTHER 1337
Specifications 1341
250X3 1341
ENGINE 1341
HYDRAULIC SYSTEM 1341
HYDRAULIC CONTROLS 1342
ELECTRICAL SYSTEM 1342
OPERATOR ENVIRONMENT 1343
UNDERCARRIAGE 1343
MASS 1344
DIGGING FORCE (with 1 1 m3 Sumitomo Bucket) (ISO 6015) 1344
DIMENSIONS 1344
WORKING RANGES 1345
SYSTEM FLUID CAPACITIES AND SPECIFICATIONS 1345
Arm Dimension 1346
250X3 1346
Standard Arm [3 00 m (9 8425 ft )] 1346
Short Arm [2 50 m (8 2021 ft )] 1348
Long Arm [3 52 m (11 5486 ft )] 1350
Main Unit Weight 1352
250X3 1352
Divided weight (standard specifications) 250X3 1352
Stand Alone Part Weight 1353
Shoe Weight (per side) 1353
Arm Weight 1353
Bolt Size and Torque Table 1354
Special Torque Settings 1354
Overall View 1358
250X3 1358
Standard Arm [3 00 m (9 8425 ft )] 1358
Short Arm [2 50 m (8 2021 ft )] 1359
Long Arm [3 52 m (11 5486 ft )] 1360
WORK RANGE DIAGRAM 1361
250X3 1362
Standard Arm [3 00 m (9 8425 ft )] 1362
Short Arm [2 50 m (8 2021 ft )] 1364
Long Arm [3 52 m (11 5486 ft )] 1366
New Machine Performance Judgment Table 1368
Table of Standards 1368
Measurement Method 1370
Engine Speed 1370
Pressure in Each Section 1370
Cylinder Falling Amount 1370
Attachment Speed 1370
Swing Speed 1371
Swing (180°) Brake Angle 1371
Travel Speed 1372
Travel Deviation 1372
Travel Sprocket Speed 1373
Shoe Tension Amount 1373
Swing Ball Race Bearing Movement Amount and Bucket Tip Movement Amount 1374
FLUIDS AND LUBRICANTS 1376
HYDRAULIC FLUID 1376
Engine Oil 1376
Oil Grade 1376
FUEL 1377
Conditions applicable to diesel fuel 1377
Recommended Conditions That Can Be Applied To Diesel Fuel 1377
Main Unit-side Diagnostic Trouble Code List 1378
Main Unit-side Trouble 1380
Diagnostic Trouble Code: 7000 P1 Pressure Sensor Signal Abnormality 1380
Diagnostic Trouble Code: 7001 P2 Pressure Sensor Signal Abnormality 1382
Diagnostic Trouble Code: 7002 N1 Pressure Sensor Signal Abnormality 1384
Diagnostic Trouble Code: 7003 N2 Pressure Sensor Signal Abnormality 1386
Diagnostic Trouble Code: 7020 Upper Pressure Sensor Signal Abnormality 1388
Diagnostic Trouble Code: 7021 Swing Pressure Sensor Signal Abnormality 1390
Diagnostic Trouble Code: 7022 Travel Pressure Sensor Signal Abnormality 1392
Diagnostic Trouble Code: 7023 Arm-in Pressure Sensor Signal Abnormality 1394
Diagnostic Trouble Code: 7040 Fuel Level Sensor Signal Abnormality 1396
Diagnostic Trouble Code: 7041 Oil Temperature Sensor Signal Abnormality 1398
Diagnostic Trouble Code: 7063 Return Filter Clog Switch Abnormality 1400
(Other than breaker specifications) 1400
Diagnostic Trouble Code: 7065 Boom-up Pilot Pressure Sensor Signal Abnormality 1401
Diagnostic Trouble Code: 7067 Bucket-close Pilot Pressure Sensor Signal Abnormality 1403
Diagnostic Trouble Code: 7200 Swing Brake Solenoid Signal Abnormality 1405
Diagnostic Trouble Code: 7201 Travel High-speed Solenoid Signal Abnormality 1407
Diagnostic Trouble Code: 7202 Pressure Boost Solenoid Signal Abnormality 1409
Diagnostic Trouble Code: 7203 Travel Alarm Buzzer Signal Abnormality 1412
Diagnostic Trouble Code: 7204 Power Save Solenoid Signal Abnormality 1414
Diagnostic Trouble Code: 7206 Option Line Switchover Solenoid Signal Abnormality 1417
Diagnostic Trouble Code: 7207 Free Swing Solenoid Signal Abnormality 1419
Diagnostic Trouble Code: 7212 Shut-off Solenoid Signal Abnormality 1421
Diagnostic Trouble Code: 7240 Pump Horsepower Proportional Valve Signal Abnormality 1423
Diagnostic Trouble Code: 7241 P1 Flow Control Proportional Valve Signal Abnormality 1425
Diagnostic Trouble Code: 7246 2 Pumps Flow Solenoid Signal Abnormality 1427
Diagnostic Trouble Code: 7247 Boom-down Proportional Valve Signal Abnormality 1429
Diagnostic Trouble Code: 7248 Arm-in Proportional Valve Signal Abnormality 1431
Diagnostic Trouble Code: 7250 Option Relief Pressure Proportional Valve Signal Abnormality 1433
Diagnostic Trouble Code: 7253 DPD Regeneration Request Output Signal Abnormality 1435
Diagnostic Trouble Code: 7254 Washer Output Abnormality 1437
Diagnostic Trouble Code: 7400 Abnormally High Coolant Temperature [(105°C (221 0°F) or higher)] 1439
Diagnostic Trouble Code: 7401 Abnormally High Coolant Temperature [ 110 °C ( 230 0 °F )or higher ] 1440
Diagnostic Trouble Code: 7404 Abnormally High Oil Temperature [98 °C (208 4 °F) or higher] 1441
Diagnostic Trouble Code: 7405 Abnormally High Boost Temperature [ 80 °C ( 176 0 °F )or higher ], 7406 Abnormally High Boost Temperature [ 90 °C ( 194 0 °F )or higher ] 1442
Diagnostic Trouble Code: 7420 Abnormally Low Alternator Voltage 1443
Diagnostic Trouble Code: 7421 Coolant Level Reduction 1445
Diagnostic Trouble Code: 7422 Abnormally Low Engine Oil Pressure 1446
Diagnostic Trouble Code: 7423 Air Cleaner Clogging 1447
Diagnostic Trouble Code: 7424 Return Filter Clogging (with breaker) 1448
Diagnostic Trouble Code: 7426 Fuel Filter Clogging 1 1449
Diagnostic Trouble Code: 7427 Fuel Filter Clogging 2 1450
Diagnostic Trouble Code: 7601 Monitor Communication Abnormality 1451
Diagnostic Trouble Code: 7602 ECM Communication Abnormality 1452
Diagnostic Trouble Code: 7605 ECM Mismatch 1453
Diagnostic Trouble Code: 7606 EEPROM Data Abnormality 1454
Diagnostic Trouble Code: 7607 Computer C Communication Abnormality 1455
Diagnostic Trouble Code: 7608 Camera Abnormality 1456
Diagnostic Trouble Code: 7609 EEPROM (B) Data Abnormality 1458
Diagnostic Trouble Code: 7610 EEPROM (C) Data Abnormality 1459
Diagnostic Trouble Code: 7611 Computer A Communication Abnormality 1460
Diagnostic Trouble Code: 7612 Air Conditioner Communication Abnormality 1461
Diagnostic Trouble Code: 7613 Monitor Communication CAN Abnormality 1462
Diagnostic Trouble Code: 7614 Air Conditioner Panel Mismatch 1463
List of special tools 1464
NUMERICAL VALUE CONVERSION TABLE 1464
Unit conversion rate 1464
Length 1465
Area 1468
Volume 1469
Weight 1471
Pressure 1473
Torque 1475
Temperature 1477
A 1479
Travel Motor Special Tool 1479
250X3 1479
Take-up Roller Special Tool 1482
250X3 1482
Upper Roller Special Tool 1483
250X3 1483
Lower Roller Special Tool 1484
250X3 1484
C 1485
Swing Motor Special Tool 1485
250X3 1485
H 1488
Engine Oil Filter Special Tool 1488
210X3/250X3/350X3 1488
Fuel Filter Special Tool 1488
210X3/250X3/350X3 1488
Injector Special Tool 1488
210X3/250X3/350X3 1488
Circuit Test Special Tool 1489
250X3/300X3/350X3/470X3 1489
Valve Guide Special Tool 1489
210X3/250X3/300X3/350X3 1489
Cylinder Head Special Tool 1489
210X3/250X3/350X3/470X3 1489
Head Bolt Special Tool 1492
210X3/250X3/350X3/470X3 1492
Crankshaft Special Tool 1492
250X3 1492
Valve Spring Special Tool 1494
210X3/250X3/350X3/470X3 1494
J 1495
Remote Control Valve Special Tool 1495
250X3 1495
R 1497
Gas Filling Special Tool 1497
210X3/250X3/350X3 1497
V 1497
Attachment Special Tool (for Cylinder Assembly) 1497
Special Jigs Part Number List 1497
1536859797_001a_electrical250x3_page1 1499
1536859809_001a_electrical250x3_page2 1500
1536859819_001b_electrical250x3_remotecare_page1 1501
1536859830_002_hydraulic250x3_page1 1502
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