With a pressure gauge teed into the pilot circuit or a travel motor sitting on the bench, you will want the 592-page Takeuchi TB290 service manual PDF (OEM ID CM0E006) open beside you, since it is the factory shop book for this hydraulic excavator. Hydraulic circuit diagrams trace pump flow through the control valve to the boom and arm cylinders, wiring and harness diagrams follow circuits across the machine, and troubleshooting charts sorted by symptom (traveling, slewing, boom, arm, bucket, blade, auxiliary hydraulics) fill a solid stretch of the back half. Teardown chapters on the pumps, pilot valves, cylinders, swivel joint, and travel and slew motors make up the largest share of the book. Set main relief at 27.5 MPa (3990 psi) and torque 3/8 hose union nuts to 49.0 ± 4.9 N·m. Out on a remote site, nobody is there to ask. Bookmarked and text-searchable, the PDF goes with you on your laptop or in the service truck, wherever the TB290 is parked.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Safety | 3-12 | Safety Precautions |
| Service Data | 13-114 | Dimensional Drawing, Specification Tables, Performance Criteria, Hydraulic Circuit Diagram, Electrical Wiring Diagram, Wire Harness Diagram |
| Function | 115-190 | Hydraulic Pump, Control Valve, Travel Motor, Slew Motor |
| Drive and Travel Systems | 191-212 | Service Standards, Drive System, Travel System |
| Slew and Upper Frame Equipment | 213-227 | Slew Equipment, Upper Frame |
| Operating Devices and Attachments | 228-247 | Operating Device, Attachments |
| Hydraulic Components | 248-317 | Hydraulic Tank, Hydraulic Pump, Gear Pump, Control Valve, Pilot Valve |
| Valves and Cylinders | 318-373 | Emergency Shut-Off Valve, Solenoid Valve, Selector Valve, Reducing Valve, Cylinders, Tensioning Cylinder |
| Travel and Slew Motors | 374-434 | Travel Motor, Slew Motor, Swivel Joint |
| Troubleshooting | 435-498 | Overall Machine, Traveling, Slewing, Boom, Arm, Bucket, Blade, Auxiliary Hydraulics |
| Other | 499-592 | Air Conditioner, Maintenance Software Manual |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Tensioning cylinder valve nut torque | 18.6 N·m to 21.6 N·m | p. 205 |
| Seal tape overlap | 10 mm | p. 11 |
| Hydraulic oil pressure (Main relief valve set pressure) | 27.5 MPa (3990 psi) | p. 19 |
| Hydraulic oil pressure (Slewing relief valve set pressure) | 24.0 MPa (3480 psi) | p. 19 |
| Hydraulic hose tightening torque (Union nut 3/8) | 49.0 ± 4.9 N·m | p. 39 |
| Hydraulic hose tightening torque (Union nut 1/2) | 58.8 ± 4.9 N·m | p. 38 |
| Engine Oil Pan Capacity (Upper limit) | 15.0 L | p. 23 |
| Hydraulic Tank Total Oil Amount | 140 L | p. 23 |
| Hydraulic Tank Capacity | 73 L | p. 23 |
| Engine Cooling System Capacity | 16.0 L | p. 23 |
| Travel Reduction Gear Oil Capacity | 1.1 L | p. 23 |
| Main Relief Valve Pressure Setting (P1) | 27.5 MPa | p. 19 |
