Takeuchi TB125 TB135 TB145 Mini Excavator Workshop Repair Manual PDF Download

Description

Takeuchi TB125, TB135 & TB145 Mini Excavator Workshop & Repair Manual

This is the official workshop and repair manual for the Takeuchi TB125, TB135, and TB145 compact excavators. Spanning 1,087 pages, it covers every major system on all three machines — disassembly, reassembly, service standards, troubleshooting, hydraulic schematics, electrical systems, and complete engine overhaul procedures for the Yanmar diesel engines fitted to each model. Whether you are diagnosing a hydraulic fault on a TB135 or rebuilding the travel motor on a TB145, this manual gives you the specifications, torque values, and step-by-step procedures to do the job correctly.

Models & Serial Numbers Covered

• TB125 — S/N 12510003 and above (all serial ranges covered)
• TB135 — S/N 13510004 and above (all serial ranges covered)
• TB145 — S/N 14510004 and above (all serial ranges covered)

Both Canopy and Cab configurations are documented throughout. Steel crawler and rubber crawler variants are addressed in specifications and service standards.

Major Systems & Chapters Included

• Section I — General: Safety precautions, disassembly/assembly cautions, seal handling, and tightening torques for hydraulic hoses, pipe fittings, and bolts (ISO 10.9)
• Section II — Specifications: Full dimension drawings for all three models (standard arm, long arm, telescopic arm), complete specification tables per serial-number range, mass tables, recommended lubricants, crawler belt types, attachment combinations, service standards, and performance judging standards including hydraulic pressures, travel speeds, and cylinder speeds
• Section III — Machine Configuration: Drive system, slew system, travel system, upper frame, control system, attachments, hydraulic system, electrical system, proportional control, air conditioner system, security system
• Section IV — Hydraulic Units: Hydraulic pump, control valve, travel motor, slew motor, pilot valve, cylinders
• Section V — Troubleshooting
• Section VI — Engine: Yanmar 3TNE / 3TNV series (TB125, TB135) and 4TNE / 4TNV series (TB145) complete engine service manual including disassembly, reassembly, adjustments, and specifications

What This Manual Enables

• Engine service and overhaul — Yanmar 3-cylinder (TB125/TB135: 82×84 mm bore×stroke, 1.331 L; TB135 late: 88×90 mm, 1.642 L) and 4-cylinder (TB145: 88×90 mm, 2.190 L) diesel engines
• Hydraulic pump and control valve overhaul with rated pressures (P1/P2: 20.6 MPa, P3: 19.6 MPa, pilot: 3.4 MPa)
• Travel motor replacement and service (2-speed piston motors per model)
• Cylinder service — boom, arm, bucket, swing, dozer blade, telescopic arm, and tensioning cylinders with bore, stroke, and retracted-length data per model
• Electrical system diagnosis and repair including security system and optional air conditioner circuit
• Performance verification using the built-in standards tables: hydraulic pressure checks, travel speed tests, slew timing, cylinder speed measurements, and natural drop measurements
• Steel and rubber crawler belt service with service limits for link height, grouser height, bushing diameter, and pin clearances
• Tightening torques for all hydraulic fittings, pipe joints (union nut, taper thread, bite-type, O-ring seal), and structural bolts

Why This Manual Is Worth Having

With performance reference values for every circuit and dimension tables broken down by serial-number range, this manual lets you distinguish between early and late production variants of the same model — critical when ordering parts or setting relief valves. The cylinder specification pages alone (bore diameters, strokes, and cushion-mechanism details for all seven cylinder types across three machines) replace hours of guesswork on the bench. For any shop that works on Takeuchi mini excavators regularly, this document pays for itself on the first job.

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