Description
Hitachi EX2600-7 Hydraulic Excavator Technical Manual – Operational Principle
This is the complete Hitachi EX2600-7 Hydraulic Excavator Technical Manual – Operational Principle, Part No. TOKEA90-EN-00, covering the EX2600-7 mining excavator fitted with the FCO Cummins engine. Written for the experienced technician, this EX2600-7 Technical Manual delivers the operational theory, system layouts, and component function data needed to properly understand and service this large hydraulic excavator before moving into hands-on repair work.
- Manual Type: Technical Manual (Operational Principle)
- Brand / Model: Hitachi EX2600-7 Hydraulic Excavator
- Engine: Cummins QSKTA50-CE (FCO Cummins engine)
- Language: English
- Page Count: 349 pages
- File Format: PDF, instant download
- Document Number: TOKEA90-EN-00
- Publication Date: August 2018 (text dated 2019-09-06)
Chapters Covered
- Section 1 General – Specifications, Working Ranges (Loading Shovel and Backhoe)
- Section 1 General – Component Layout (main components, electrical system overview, cab, battery, relay box, electrical equipment box, monitoring controller box, engine, air cleaner, radiator, oil cooler, pump area, control valve, pilot panel, EDQR valve, swing device, undercarriage, travel device, center joint, fast-filling system, folding stairway, auto-lubrication device, hydraulic oil tank, fuel tank)
- Section 1 General – Component Specifications (engine, engine accessories, hydraulic components, electrical components, others)
- Section 2 System – Controller, Control System, ELU System, Hydraulic System, Electrical System, Air Conditioning System
- Section 3 Component Operation – Pump Device, Swing Device, Control Valve, Control Equipment, Travel Device, Others (Upperstructure), Others (Undercarriage), Others (Front Attachment)
Together these sections walk a technician from the machine’s overall specifications and working dimensions through every controller and hydraulic circuit, down to how individual valves, pumps, and cylinders actually function inside the EX2600-7’s systems.
What’s Inside the Engine and Hydraulic Data
The Cummins FCO engine section lists the QSKTA50-CE as a 16-cylinder, 60° V, water-cooled, direct injection, exhaust turbocharged diesel with a 50 L displacement, rated output of 1119 kW/1800 min-1, and a 15.0:1 compression ratio, along with cooling system, lubrication, starting, alternator, and fuel system data. The hydraulic component tables cover the main pump drive ratios, swash-plate variable displacement pump displacements, control valve relief pressures, swing motor and travel motor specifications, and boom/arm/bucket cylinder bore, stroke, and rod diameters for both the Loading Shovel and Backhoe front-end configurations.
Why This EX2600-7 Manual Matters
Understanding how the EX2600-7’s pump flow control, ELU electric lever system, and hydraulic circuits operate is what lets a technician correctly interpret symptoms before chasing the wrong component. This Technical Manual – Operational Principle gives you the factory-documented operating logic behind the machine’s controllers, pumps, valves, and electrical system, using the same specifications and terminology Hitachi technicians rely on for the EX2600-7.
Complete PDF Bookmark Tree
Complete Bookmarks
The complete bookmarks in the “Hitachi EX2600-7 Hydraulic Excavator Technical Manual – Operational Principle (Cummins FCO Engine)” are as follows:
TOKEA90-EN-00p. 1
INTRODUCTIONp. 3
SYMBOL AND ABBREVIATIONp. 5
SECTION AND GROUP CONTENTSp. 7
+SECTION 1 GENERALp. 9
+Group 1 Specificationsp. 11
Specificationsp. 11
Working Rangep. 12
+Group 2 Component Layoutp. 15
Main Component (Overview)p. 15
Main Component (Loading Shovel)p. 16
Main Component (Backhoe)p. 17
Electrical System (Overview)p. 18
Electrical System (Around Cab Bed)p. 19
Electrical System (In Cab)p. 20
Electrical System (Around Battery)p. 23
Electrical System (Relay Box)p. 24
Electrical System (Electrical Equipment Box)p. 25
Electrical System (Relay Layout of Electrical Equipment Box)p. 26
Electrical System (LED Layout of Contamination Sensor Amplifier)p. 27
Electrical System (Layout of Contamination Sensor)p. 28
Electrical System (Monitoring Controller Box)p. 29
Electrical System (Pump Compartment Controller Box)p. 30
Electrical System (Angle Sensor) (Loading Shovel)p. 31
Electrical System (Angle Sensor) (Backhoe)p. 32
Enginep. 33
Air Cleanerp. 34
Around Radiatorp. 35
Around Oil Coolerp. 36
Around Pumpp. 37
4-Unit Pumpp. 39
Control Valvep. 40
Pilot Panelp. 43
EDQR Valvep. 44
Swing Devicep. 45
Undercarriagep. 46
Travel Devicep. 47
Center Jointp. 47
Fast-Filling Systemp. 48
Fast-Filling Panelp. 49
Folding Stairwayp. 50
Auto-Lubrication Devicep. 53
Hydraulic Oil Tankp. 54
Fuel Tankp. 55
+Group 3 Component Specificationsp. 57
Enginep. 57
Engine Accessoriesp. 61
Hydraulic Componentp. 62
Electrical Componentp. 66
Othersp. 67
+SECTION 2 SYSTEMp. 71
+Group 1 Controllerp. 73
Outlinep. 73
MCU: Monitor Control Unit (Alarm Monitor and Sub-Control System Control Unit)p. 78
ELUF: Electric Lever Control Unit for Front (Electric Control Lever Controller for Controlling Front Attachment Operation)p. 84
ELUT: Electric Lever Control Unit for Travel (Electric Control Lever Controller for Controlling Travel Operation)p. 88
PFU: Pump Flow Control Unit (Pump Flow Rate Control Controller)p. 92
IDU: Information Display Unit (Information Display Controller)p. 97
ECM: Engine Control Module (Engine Controller)p. 104
DLU: Data Logging Unitp. 106
CSU: Contamination Sensing Unitp. 108
HMU: Hydraulic System Monitoring Unitp. 110
PMU: Pump Monitoring Unitp. 112
EHU: Engine Heat Balance Monitoring Unit (Engine Cooling System Monitoring Unit)p. 114
ODR: Operation Data Recorderp. 116
BPU: Basic Performance Monitoring Unitp. 118
+Group 2 Control Systemp. 121
Outlinep. 121
Engine Controlp. 123
Pump Controlp. 130
Sub-Control System Controlp. 145
Fast-Filling Panel Lower Controlp. 147
Folding Stairway Controlp. 159
Travel Mode Controlp. 163
Cab Bed Pressurization Controlp. 167
+Group 3 ELU Systemp. 169
Outlinep. 169
Pilot Control Shut-Off Controlp. 170
Boom Lower Flow Rate Regeneration Controlp. 172
Cylinder Stroke End Shock Prevention Controlp. 174
Adjuster Cylinder End Travel Regulation Controlp. 176
Swing Stop Controlp. 178
+Group 4 Hydraulic Systemp. 181
Outlinep. 181
Pilot Circuitp. 183
Main Circuitp. 189
Other Actuator Circuitsp. 208
Travel Shock Absorbing/Travel Stop Circuitp. 209
+Group 5 Electrical Systemp. 211
Outlinep. 211
Main Circuitp. 212
Electric Power Circuit (Key Switch: OFF)p. 214
Electric Power Circuit (Key Switch: ACC)p. 216
Electric Power Circuit (Key Switch: ON)p. 218
CAN Circuitp. 226
Starting Circuit (Key Switch: ON)p. 228
Starting Circuit (Engine Start Switch: ON)p. 230
Charging Circuitp. 234
Engine Stop Circuitp. 236
Surge Voltage Prevention Circuitp. 242
+Group 6 Air Conditioning Systemp. 245
Outlinep. 245
Functions of Main Componentsp. 246
Functions of Main Electrical Partsp. 247
+SECTION 3 COMPONENT OPERATIONp. 253
+Group 1 Pump Devicep. 255
Outlinep. 255
Main Pumpp. 256
Oil Cooler Fan Motor Pumpp. 258
Regulator for Main Pumpp. 260
Regulator for Oil Cooler Fan Motor Pumpp. 268
Pump Control Solenoid Valvep. 288
Pilot Pump, Air Conditioner Compressor Motor Pump, Pump Transmission Oil Pumpp. 290
Pump Delivery Pressure Sensorp. 290
Regulator Pressure (Flow Rate Control Pressure) Sensorp. 290
Contamination Sensorp. 291
+Group 2 Swing Devicep. 293
Outlinep. 293
Swing Motorp. 294
Swing Parking Brakep. 296
Swing Reduction Gearp. 297
Valve Unitp. 298
+Group 3 Control Valvep. 301
Outlinep. 301
Pilot Port Positionp. 302
Hydraulic Circuitp. 303
Main Relief Valvep. 305
Overload Relief Valvep. 305
Make-Up Valvep. 306
+Group 4 Control Equipmentp. 307
Outlinep. 307
Electric Control Leverp. 308
EDQR Valve for Electric Control Leverp. 312
+Group 5 Travel Devicep. 317
Outlinep. 317
Travel Motorp. 318
Travel Mode Controlp. 320
Brake Valvep. 324
Parking Brakep. 326
Travel Reduction Gearp. 327
+Group 6 Others (Upperstructure)p. 329
Oil Cooler Fan Motorp. 329
Air Conditioner Compressor Motorp. 331
Folding Stairway Pump Unitp. 333
Pilot Relief Valvep. 334
Travel Mode Selector Solenoid Valvep. 335
Reducing Valve for Travel Mode Controlp. 336
Accumulatorp. 337
+Group 7 Others (Undercarriage)p. 339
Swing Bearingp. 339
Accumulatorp. 340
Adjuster Cylinderp. 341
Center Jointp. 342
+Group 8 Others (Front Attachment)p. 343
Make-Up Valvep. 343
3-Spool Solenoid Valve Unitp. 346
SERVICE MANUAL REVISION REQUEST FORMp. 349
With this manual you can:
- Understand how the pump flow control, ELU, and monitoring systems interact on the EX2600-7
- Reference exact engine, hydraulic, and electrical component specifications during diagnosis
- Study the swing device, travel device, and control valve operating principles before disassembly
- Confirm cylinder, motor, and valve pressure specifications for the Loading Shovel or Backhoe configuration
This Hitachi EX2600-7 Hydraulic Excavator Technical Manual is delivered as an instant PDF download immediately after purchase — no shipping, no waiting. Read it on a laptop, tablet, or phone in the shop, or print any page you need at the machine.
Reviews
There are no reviews yet.