This is the factory Takeuchi workshop manual, book code CG4E004, for the TB125, TB135 and TB145 compact excavators - and it is actually three manuals in one file. Pages 1-665 are the Takeuchi machine manual: General, Specifications, Machine Configuration, Hydraulic Units and Troubleshooting. Pages 666-1021 are a complete bundled Yanmar engine workshop manual, from valve adjustment to the injection pump, turbocharger, starter and alternator. Pages 1022-1087 add a fuel injection pump service manual for bench work on the pump itself. The Hydraulic Units section (pages 287-614) is the heart of it, covering pump, control valve, cylinders, travel and slew motors with serial-number-split variants. Serial coverage: TB125 from 12510003, TB135 from 13510004, TB145 from 14510004.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| General | 9-24 | Safety, Service Precautions, Machine Identification |
| Specifications | 25-90 | Dimensions and Digging Performance per Model and Variant, Names of Components, Canopy and Cab Variants, Rubber Crawler Variants, Long Arm Variant |
| Machine Configuration | 91-286 | Hydraulic System, Electrical System, Air Conditioner System, Security System |
| Hydraulic Units | 287-614 | Hydraulic Pump, Control Valve, Pilot Valve, Cylinders, Travel Motor, Slew Motor, Swivel Joint, Serial Number Variants |
| Troubleshooting | 615-665 | Overall Machine, Machine Travel |
| Yanmar Engine (Bundled Engine Workshop Manual) | 666-1021 | General, Inspection and Adjustment, Troubleshooting, Lubrication System, Cooling System, Fuel Injection Pump and Governor, Turbocharger, Starting Motor, Alternator, Electric Wiring, Service Standards, Tightening Torque |
| Fuel Injection Pump Service Manual (Bundled) | 1022-1087 | Injection Pump Disassembly, Camshaft, Plunger, Governor, Nozzle Service |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| TB125 with canopy and rubber crawlers |
| Overall length x width x height | 4410 x 1460 x 2445 mm (173.6 x 57.5 x 96.3 in) | |
| TB125 |
| Max digging depth | 2580 mm (101.5 in) | |
| Max vertical digging depth | 1935 mm (76.3 in) | |
| Max digging height | 4290 mm (168.9 in) | |
| Max dumping height | 3030 mm (119.2 in) | |
| Max ground digging radius | 4435 mm (174.6 in) | |
| Yanmar TNV82 to 4TNV98 |
| Engine valve gap (intake and exhaust), Yanmar TNV82 to 4TNV98 | 0.15 to 0.25 mm | |
| Yanmar 4TNV106(T) |
| Engine valve gap (intake and exhaust), Yanmar 4TNV106(T) | 0.25 to 0.35 mm | |
| varies by belt |
| V-belt deflection at 98 N (10 kgf) | 8 to 12 mm new, 10 to 14 mm used | |
| All Models |
| Serial numbers covered | TB125 from 12510003, TB135 from 13510004, TB145 from 14510004 | |
| Book code | CG4E004 | |
