![Takeuchi TB128FR Repair Manual [Mini Excavator]](https://youfixthis.com/wp-content/uploads/2015/11/2015-11-16_11-25-21-300x300.png)
This 678-page Takeuchi TB138FR Workshop Manual (OEM #CG5E001) covers your Compact Excavator down to the last O-ring, from the YDP-MP2 and YDP-MP4 engine variants right through to the drive, slew, and travel systems. You get full wiring diagrams for chasing electrical faults, hydraulic schematics that trace pump, control valve, and cylinder circuits, plus a dedicated troubleshooting section built around real symptoms: won't slew, won't travel, boom drifts. Check carrier roller wear against the factory allowable value of 69 mm before you condemn a part, and follow the piping cautions on reassembly so you're not chasing a leak you created yourself. No more guessing whether that roller is still within spec. This PDF is bookmarked and searchable, so you can jump straight to Section IV or the engine chapter, pull it up on your tablet, and get back under the machine.
What's Inside This Takeuchi TB138FR Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-18 | Safety Precautions, Cautions During Disassembly and Assembly, Cautions During Removal and Installation of the Hydraulic Units, Cautions During Removal and Installation of Piping |
| Specifications | 19-44 | Names of Components, Dimensions, Specifications Tables, Mass Tables, Recommended Lubricants, Servicing Standards |
| Machine Configuration | 45-190 | Drive System, Slew System, Travel System, Upper Frame, Control System, Attachments |
| Hydraulic Units | 191-344 | Hydraulic Pump, Control Valve, Pilot Valve, Solenoid Valve, Cylinders, Travel Motor |
| Troubleshooting | 345-390 | Overall Machine, Machine Travel, Slewing, Boom, Arm, Bucket |
| Yanmar 3TNV88 Engine (Bundled Manual) | 391-678 | Engine Disassembly and Reassembly, Fuel Injection System, Cooling and Lubrication, Inspection and Adjustment, Engine Specifications |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cautions during removal and installation of piping | 10 | p. 6 |
| Tightening torques | 11 | p. 6 |
| Handling of seals | 10 | p. 6 |
| Carrier Roller Allowable Value A | 69 mm | p. 30 |
| Carrier Roller Basic Dimension B | 25 mm | p. 30 |
| Tank level capacity | 41 L | p. 103 |
| Fuel filter tightening torque for 3TNV82A to 4TNV106 (T) | 20 to 24 N•m (2.0 to 2.4 kgf•m) | p. 444 |
| Air blowing pressure for air cleaner element | 0.29 to 0.49 MPa (3.0 to 5.0 kgf/cm²) | p. 442 |
| Lube oil filter Filtration area | 0.12 m² | p. 32 |
| Engine Rated Output | 20.5 kW/min-1 | p. 23 |
| Hydraulic Tank Capacity (Total System) | 68 L | p. 29 |
Takeuchi TB138FR Common Problems This Manual Covers
Takeuchi TB138FR hydraulic system loses pressure and boom or arm movement turns sluggish after a few hours
Check the troubleshooting chart on pages 348 to 350 for pump or coupling faults. Verify hydraulic oil level against the 68 L total system capacity listed on page 29, then listen for pump noise indicating cavitation. Replace the hydraulic filter and inspect the pump coupling for wear before condemning the pump itself.
Manual Section: V . Troubleshooting - Overall Machine: No operations or no power p. 348Engine won't start or stalls under load, especially after fuel filter changes
Work through the fuel injection pump troubleshooting chart on pages 672 to 674, checking first for a clogged fuel filter or air sucked into the line. Torque the fuel filter to 20 to 24 N·m (2.0 to 2.4 kgf·m) per the page 444 spec, then bleed the system and inspect the fuel feed pump for wear. Test control rack movement if starting is still slow.
Manual Section: Vi . Engine - Fuel Injection Pump TroubleshootingCarrier roller falls out or track sags excessively after routine seal wear
Measure the carrier roller against the 69 mm allowable wear limit and 25 mm basic dimension on page 30. Torque the roller mounting bolts to 65.7 N·m per page 67 and the roller nut to 66 N·m per page 71. Refill the roller with 45 mL of lube oil and replace the seal before the roller walks out of the frame again.
Manual Section: Iii . Machine Configuration - Drive System p. 67Hydraulic fluid or engine temperature climbs high and won't stabilize during extended digging cycles
Check the engine general troubleshooting chart on pages 462 to 467 for overheat causes: clogged radiator fins, low coolant, or a restricted air filter. Confirm hydraulic oil is filled to the 68 L system capacity noted on page 29, since a low reservoir starves the cooler. Clean the hydraulic oil cooler fins and pressure test the radiator cap before replacing the coolant temperature sensor.
Manual Section: Vi . Engine - General Troubleshooting (Compression, Exhaust, Electrical)Engine stalls or bogs down when engaging hydraulic functions like the bucket or boom
Check the engine general troubleshooting chart on pages 462 to 467 for hunting or stalling under load, often traced to a clogged air filter or fuel injection timing deviation. Verify no-load minimum engine speed sits at 1200 min-1 as specified on page 458 before touching the idle screw. Inspect wiring for open circuits and check battery voltage drop if stalling continues under hydraulic load.
Manual Section: Vi . Engine - General Troubleshooting (Compression, Exhaust, Electrical)Frequently Asked Questions
How to reset Takeuchi TB138FR error code
The manual does not provide a general procedure for resetting error codes. Specific fault conditions like 'neutral error' or 'overcurrent error' for the proportional control are described, with troubleshooting steps that may involve power cycling, but no universal 'reset error code' function is listed. p. 130
Torque specs for Takeuchi TB138FR carrier roller bolts
The installation nut for the carrier roller should be tightened to 66 N·m. This specific torque value is provided for proper installation of the carrier roller. p. 71
What are the error codes on Takeuchi TB138FR mini excavator
The manual does not list specific alphanumeric 'error codes' for the Takeuchi TB138FR mini excavator. It describes various fault conditions and symptoms, such as 'neutral error' or 'overcurrent error' related to the proportional control, along with their troubleshooting steps. p. 130
How quickly can I access this Takeuchi TB138FR, TB138FR Compact Excavator?
Instant PDF download (25 MB). You get the full 678-page searchable Workshop Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Are there any print restrictions on this Takeuchi TB138FR, TB138FR Compact?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Can I find hydraulic circuit diagrams in this Takeuchi TB138FR, TB138FR?
Yes, complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included.
Reviews
There are no reviews yet.