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Overview of Takeuchi and TB135
Takeuchi Manufacturing, established in 1963 by Akio Takeuchi in Nagano, Japan, pioneered the compact excavator category with the world’s first mini excavator (TB1000) in 1971. Since then, Takeuchi has expanded globally and built a reputation for innovation and reliability in compact machinery . The TB135 model, part of the 3–5 ton class, offers a balance of power, precision, and ease of use .
Key Specifications of TB135
A TB135 owner reported difficulty starting the 2007 machine (approx. 3,500 hours). The engine wouldn’t fire up in the mornings unless jump-started with a 140-amp booster. The machine would then run normally. This issue persisted regardless of whether the machine was stored inside or outside overnight .
Troubleshooting Suggestions
The Takeuchi TB135 is renowned for its build quality and operator-friendly features. However, like any compact diesel machine, it can exhibit startup reluctance in cold mornings. Resolving such issues involves a systematic check of starter integrity, electrical connections, charging system, and fuel delivery. With periodic maintenance and diagnostic checks, owners can keep their TB135 running reliably even in harsh environments.
Takeuchi Manufacturing, established in 1963 by Akio Takeuchi in Nagano, Japan, pioneered the compact excavator category with the world’s first mini excavator (TB1000) in 1971. Since then, Takeuchi has expanded globally and built a reputation for innovation and reliability in compact machinery . The TB135 model, part of the 3–5 ton class, offers a balance of power, precision, and ease of use .
Key Specifications of TB135
- Operating weight: approximately 7,831 lb (about 3.55 t)
- Power: Yanmar 3-cylinder diesel engine at 27.8 hp, max torque 79 lb-ft
- Hydraulic system: 3,000 psi relief pressure, auxiliary flow around 15.6 gpm
- Functionality: simultaneous cab swing and digging; operator aids like glow plug system, safety lockout, automatic fuel bleed
A TB135 owner reported difficulty starting the 2007 machine (approx. 3,500 hours). The engine wouldn’t fire up in the mornings unless jump-started with a 140-amp booster. The machine would then run normally. This issue persisted regardless of whether the machine was stored inside or outside overnight .
Troubleshooting Suggestions
- Check starter and armature: The owner suspects internal wear or buildup may be preventing full starter engagement when cold. Testing amperage draw at initial crank compared to later in the day may reveal drag or resistance in the starter motor .
- Inspect battery and connections: Even with a new battery, problems can arise from voltage drops due to dirty or loose terminals. Confirm alternator charge rate and test for parasitic drain overnight .
- Eliminate fuel or air system issues: It may help to check for air entering the fuel lines after idle periods, or to run a thinner oil grade in cold climates to reduce startup load.
- Follow cold start procedure:
- Set throttle to 1/8
- Engage glow plugs until indicator goes off
- Then crank ignition for start
- Set throttle to 1/8
- Conduct a visual inspection of electrical wiring and fuel hoses—damp or degraded hoses can introduce air into the fuel system, affecting startup.
- Regularly monitor starter current draw; a growing difference may signal internal starter degradation.
- Always perform a pre-start visual check: ensure tracks are clear, fluid levels are correct, and working attachments are secured.
- Warm up the engine and hydraulic system before full operation, especially under sub-zero conditions, to reduce immediate mechanical stress.
The Takeuchi TB135 is renowned for its build quality and operator-friendly features. However, like any compact diesel machine, it can exhibit startup reluctance in cold mornings. Resolving such issues involves a systematic check of starter integrity, electrical connections, charging system, and fuel delivery. With periodic maintenance and diagnostic checks, owners can keep their TB135 running reliably even in harsh environments.
