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Factory-level data takes the guesswork out of tearing down and rebuilding your TB260 mini excavator. This 702-page workshop manual (OEM #CQ1E001) delivers full hydraulic circuit diagrams for the piston pump, gear pump, control valve, and proportional solenoid valves. You also receive complete wiring and harness schematics for every electrical circuit. Troubleshooting walks you through travel, slewing, boom, and blade symptoms using structured diagnostic paths. Disassembly procedures cover the hydraulic pump, cylinders, slew motor, and the entire travel system. Find exact specifications fast, like torquing the track roller bolts to 256 N·m (189 ft.-lb) or the arm cylinder rod cover to 530 N·m. Bookmarked and keyword-searchable, this PDF loads on any device so you can pull specs before touching a wrench.
What's Inside This Takeuchi TB260 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 3-12 | - |
| Service Data | 13-66 | Dimensional Drawing, Table of Masses, Lubricant and Fuel Chart, Performance Criteria, Tightening Torque, Hydraulic Circuit Diagram, Electrical Circuit Diagram, Wire Harness Diagram |
| Function | 67-101 | Piston Pump, Gear Pump, Control Valve, Pilot Valve, Proportional Control Solenoid Valve, Solenoid Valve, Selector Valve, Cylinders |
| Disassembly and Assembly | 102-303 | Travel System, Upper Frame, Hydraulic Tank, Hydraulic Pump, Pilot Valve, Proportional Control Solenoid Valve, Solenoid Valve, Selector Valve |
| Troubleshooting | 304-362 | Overall Machine, Traveling, Slewing, Boom, Arm, Bucket, Boom Swing, Blade |
| Other | 363-406 | Multi-Information Display, Cover |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track roller bolt tightening torque | 256 N·m (189 ft.-lb) | p. 119 |
| Arm cylinder rod cover tightening torque | 530 N·m (390.9 ft.-lb) | p. 259 |
| Dozer blade cylinder rod cover tightening torque | 834 N·m (615.1 ft.-lb) | p. 259 |
| Control valve Tie rod tightening torque | 7.9-9.8 N·m | p. 186 |
| Hydraulic hose Union nut (G) 1/8 fitting tightening torque | 9.8 N·m | p. 37 |
| DPF intermediate temperature sensor installation tightening torque | 25 - 40 N·m | p. 29 |
| Arm cylinder natural drop limit | 6 mm (0.2 in.) | p. 28 |
| Hydraulic Pump Delivery (P1, P2) | 58.3 L/min | p. 20 |
| Main Relief Valve Pressure Setting | 24.0 MPa | p. 20 |
| Slew Motor Parking Brake Torque | 2040 N·m | p. 44 |
| Travel Motor Reduction Gear Ratio | 1/58.4 | p. 45 |
| Cylinder Head Valve Clearance (All models) | 0.006 - 0.010 in. | p. 83 |
Takeuchi TB260 Common Problems This Manual Covers
Takeuchi TB260 DPF backup mode triggered, machine derated or won't operate at full power
Check the error code on the multi-information display and cross-reference it. Initiate a forced regeneration cycle from the operator panel before pulling any components. If regen fails to complete, inspect the DPF intermediate temperature sensor and reinstall to 25-40 N·m as shown on page 29. Log total hours to track ash load intervals.
Manual Section: Engine Failure DiagnosisArm cylinder slow or won't hold load, hydraulic drift visible at full stick extension p. 28
Test the arm cylinder natural drop with the bucket at full reach. The maximum specification is 6 mm (0.2 in.) per page 28. If the drop exceeds this limit, pull the arm cylinder to inspect the rod seals. During reassembly, torque the rod cover to 530 N·m (390.9 ft.-lb) as specified on page 259. Sample the hydraulic fluid for contamination before returning the machine to service.
Manual Section: Disassembly and AssemblyBlade slowly drifts down and won't hold working position after operator releases joystick p. 259
Verify the blade cylinder is the source: hold the blade under load for 5 minutes and mark any rod movement. If confirmed, remove the blade cylinder and replace the rod seals. Reinstall the rod cover and torque to 834 N·m (615.1 ft.-lb) as specified on page 259. Inspect the cylinder bore for scoring before reassembly.
Manual Section: Disassembly and AssemblyFrequently Asked Questions
How do I force a DPF regeneration on a Takeuchi TB260?
To force a DPF regeneration, follow the stationary regeneration procedure: move the machine to a well-ventilated and safe location, set the accelerator lever to the lowest position with the engine idling, and activate the interlock mechanism including the parking brake. Then, press the DPF regeneration request switch for 1 second or longer to start the process, which takes approximately 25 to 30 minutes.
How to reset Takeuchi TB260 DPF regen
To reset the DPF regeneration, perform the stationary regeneration procedure when the DPF regeneration request lamp is lit. This involves moving the machine to a safe, well-ventilated area, setting the accelerator lever to low idle, engaging the parking brake, and pressing the DPF regeneration request switch for at least 1 second. The regeneration process typically completes in 25 to 30 minutes.
How to force regen on Takeuchi TB260
To force a DPF regeneration, initiate the stationary regeneration procedure: ensure the machine is in a well-ventilated and safe location, set the accelerator lever to the lowest position with the engine idling, and engage the interlock mechanism and parking brake. Then, press the DPF regeneration request switch for 1 second or longer to begin the regeneration, which will take about 25 to 30 minutes.
How will I receive this Takeuchi TB260 Workshop Manual?
Immediate download of the complete 702-page searchable Workshop Manual. Access it on any device — laptop at your desk or phone in the field.
Can I print this Takeuchi TB260 manual?
Yes. The PDF has no DRM restrictions — print any page or section you need for your shop. Works with any standard printer.
Does this Takeuchi TB260 Workshop Manual have electrical diagrams?
Yes, this Takeuchi TB260 Workshop Manual includes complete electrical wiring diagrams, wire routing, and connector pinouts.
Document Quality
This document is a native digital PDF, allowing you to search and copy the full text content. All text is crisp and clear, making it easy to read throughout the manual. Diagrams and illustrations are vector-based, appearing sharp and detailed at any zoom level, with all labels clearly readable. The pages are clean with no scan artifacts, stains, or skewed content.
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