This 456-page Takeuchi TB070 Service Manual (OEM #WL1-101E4) covers the complete Workshop Manual for your Compact Excavator, from the hydraulic pump and control valves down to swivel joint overhaul. Inside you get full wiring diagrams, hydraulic schematics for the mono-block and 3-section control valves, and a dedicated troubleshooting section that walks through no-power, no-slew, and natural-fall complaints system by system. You also open to specification tables covering fluid capacities, lifting capacities, and crawler belt types, plus engine servicing down to the rocker shaft and injection pump. Torque the O-ring piping joints at 1-1/4 inch to 12.0±1.0 kgf-m, and confirm your dozer blade height sits at 500 mm before you sign off the job. No more flipping through a photocopied binder hunting for one torque value. This PDF is bookmarked and searchable, so you can jump straight to Hydraulic Units or Troubleshooting and get back under the machine.
What's Inside This Takeuchi TB070 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-16 | General Cautions, Cautions During Disassembly and Assembly, Cautions During Removal and Installation of the Hydraulic Units, Cautions During Removal and Installation of Piping |
| Specifications | 17-54 | Names of Components, Specification Diagrams, Lifting Capacities, Specification Tables, Weight Tables, Fluid Capacities, Recommended Lubricants, Types of Crawler Belts |
| Machine Configuration | 55-140 | Drive System, Slew System, Travel System, Upper Frame, Control System, Attachments, Hydraulic System, Electrical System |
| Hydraulic Units | 141-312 | Hydraulic Pump, Control Valve (Mono-Block), Control Valve (3-Section), Solenoid Valve, Pilot Valve, Cylinder (Except the Tensioning Cylinder), Cylinder (Tensioning Cylinder) |
| Troubleshooting | 313-362 | Overall Machine, Machine Travel, Slewing, Boom, Arm, Bucket, Boom Swing, Dozer Blade |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Dozer blade mounting location | front | p. 2 |
| Joints for Piping (O-ring Seal Type) Thread Nominal Diameter (PT) 1 | 11.0±1.0 kgf-m | p. 15 |
| Joints for Piping (O-ring Seal Type) Thread Nominal Diameter (PT) 1-1/4 | 12.0±1.0 kgf-m | p. 15 |
| Dozer Blade Height | 500 mm | p. 26 |
| Injection valve opening pressure | 185 (2,631) kg/cm² (psi) | p. 372 |
| Tube tightening torque | 2.0-2.5 kg-m (14 - 18 ft-lb) | p. 380 |
| Water outlet tightening torque | 1.3-1.9 kg-m (9 - 14 ft-lb) | p. 420 |
| Thermostat housing tightening torque | 1.3-1.9 kg-m (9 - 14 ft-lb) | p. 420 |
| Hydraulic Oil Tank Total System Capacity | 132 L | p. 31 |
| Engine Oil Capacity (Upper Limit) | 11 L | p. 31 |
| Fuel Tank Capacity | 120.2 L | p. 31 |
| Engine Cooling System Capacity | 12 L | p. 31 |
Takeuchi TB070 Common Problems This Manual Covers
Takeuchi TB070 engine flooding during cold starts with strong raw fuel smell and hard starting
Inspect the fuel injectors for leakage. Remove the injection tube using double wrenches and torque to 2.0-2.5 kg-m (14-18 ft-lb) as noted on page 410. Check the injection valve opening pressure on page 372 to ensure it holds exactly 185 kg/cm² (2,631 psi) before reinstalling.
Manual Section: Engine - Hard to StartDozer blade cylinder struggles to lift tracks off the ground or moves too slowly
Test the dozer blade hydraulic oil pressure at the test port. Adjust the relief valve to achieve exactly 250±10 kgf/cm² as specified on page 44. Verify the cylinder stroke extends fully within 3.6±0.3 seconds before checking the swivel joint for internal oil leaks.
Manual Section: Dozer Blade - The dozer blade cylinder doesn’t move, or there is no powerEngine temperature gauge spikes into the red zone under heavy load after an hour of operation
Drain the 12 L engine cooling system capacity listed on page 31 and inspect the thermostat. Measure the thermostat valve opening temperature to verify it opens at exactly 71°C (160°F). Torque the thermostat housing bolts to 1.3-1.9 kg-m (9-14 ft-lb) according to page 420.
Manual Section: Engine - OverheatsMain boom fails to raise when pulling back on the right joystick but other functions work
Measure the main relief valve set pressure for the boom circuit. Adjust the relief cartridge until the gauge reads exactly 280 kgf/cm2 as shown on page 27. Check the pilot pressure to confirm it maintains 40 kgf/cm2 before inspecting the pilot valve.
Manual Section: Boom - The boom cylinder doesn’t moveFrequently Asked Questions
Is idle-only start up normal on Takeuchi TB070 excavator?
No, the manual recommends starting the engine at the L position (1450 rpm) in cold conditions to ensure proper operation. Starting at any other speed, especially in cold weather, should be avoided. p. 131
Why does my Takeuchi TB070 won't start?
Common reasons for the Takeuchi TB070 not starting include a discharged battery, faulty starter or starter switch, lack of fuel, faulty feed pump, incorrectly assembled fuel pipes, or a faulty injection pump. Other causes could be incorrect injection timing, clogged fuel filter, or air sucked into the fuel system. p. 448
What causes cold start issues in Takeuchi TB070?
Cold start issues can arise if the engine is not started at the recommended L position (1450 rpm) in cold conditions. The air heater system is crucial for cold starts, with preheating times of 1 second at 0°C, 9 seconds at -10°C, and 15 seconds at -20°C. Problems with the air heater's operation or its components can lead to cold start difficulties. p. 128
How to troubleshoot Takeuchi TB070 won't start
To troubleshoot a Takeuchi TB070 that won't start, first check the hydraulic oil level and replenish if insufficient. Then, inspect the hydraulic pump and coupling for faults by checking for oil discharge during cranking. If the pump is normal, hydraulic oil will be discharged from it; if not, the pump or coupling is faulty. p. 317
Is this Takeuchi TB070 Service Manual a digital download?
A 456-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this Takeuchi TB070 manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Does this Takeuchi TB070 manual include hydraulic schematics?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
Reviews
There are no reviews yet.