2004 Takeuchi TB125 TB135 TB145 Operator's Manual

This operator's manual provides essential information on the safe and efficient operation, inspection, and maintenance of your Takeuchi TB125, TB135, and TB145 mini excavators. Includes vital safety instructions and detailed operating procedures for optimal performance and longevity. Part No. AG4E028.

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Document Details

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Document Number / Seller:
31265 / Douglas Moore
File Size:
12.72 MB
File Type:
PDF
Language:
English
Pages:
267
Printable:
Yes
Category:
Mini Excavator
Last updated / verified
Apr 11, 2026

Models Covered & Key Technical Specifications

Takeuchi TB125 TB135 TB145 (AG4E028) - Operator's Manual: Mini Excavator - Comprehensive Guidance This manual provides essential information on the safe and efficient operation, inspection, and maintenance of your Takeuchi TB125, TB135, and TB145 mini excavators. Includes vital safety instructions and detailed operating procedures for optimal performance and longevity. | Operator's Manual Repository

  • Reference Coupling Torques: 20 N·m (14.5 ft-lb) is the specified torque for the port relief valve's set screw, ensuring secure connection.
  • Integral Twist Specifications: Approximately 10 mm (0.4 in.) is the specified slack for the fan belt, crucial for proper alternator tension.
  • General Load Capacity: 535 kg (1177 lb) is the maximum load capacity for the TB125 at a 4.0m (13.1ft) reach over the side.
  • Essential Cycle Rate: 9.6 rpm is the standard slew speed for the TB125, ensuring smooth rotational movement.
  • Baseline Torque Data: 153.3 ± 7.7 ft-lb represents the general connection point torque for an M16 X 2.0 thread size.
  • Fundamental Holding Capacity: 27.1 (3.93) kPa (psi) is the ground pressure for the TB135 Cab model with rubber crawlers, indicating optimal load distribution.

Manual Description & Preview

Takeuchi TB125 TB135 TB145 (AG4E028) - Operator's Manual: Mini Excavator - Comprehensive Guidance

Product-Line: Mini Excavator // Machine-Range: TB125 / TB135 / TB145 // Documentation-Type: Operator's Manual

The Takeuchi TB125, TB135, and TB145 Operator's Manual details the safe and efficient operation, inspection, and maintenance procedures. This manual is crucial for all operators to understand the machine's capabilities and ensure optimal performance.

The service manual covers:

  • Introduction and Machine Description
  • Safety Precautions and Signal Words
  • Controls, Instruments, and Switches
  • Operating Procedures and Troubleshooting
  • Maintenance Schedules and Specifications

Professionally calling for adherence to all safety guidelines is paramount.

Service-Nexus Baseline Logic
Safety Information General Precautions Critical for safe operation
Machine Controls Lever Patterns ISO and JCB specifications
Maintenance Intervals Daily to Annual Inspections Ensures machine longevity
Operating Procedures Travel and Digging Techniques Maximizes efficiency and safety
Troubleshooting Common Symptoms and Solutions Quick issue resolution
Specifications Key Machine Data Technical performance overview

When operating the machine in extremely harsh environments (with high dust levels or high temperatures), inspection and maintenance should be performed earlier than the times indicated on the Maintenance Chart.

FAQ

Can you **specify** the lubrication requirements for the slew bearing? keyboard_arrow_down

Every 50 Hours is the recommended interval for lubricating the slew bearing. Use the grease gun to supply grease to the grease nipple (1) as shown in the manual, then start the engine and lift the bucket, slew clockwise 90°, ground the bucket, stop the engine, and repeat this process three times.

What is the **exact** travel speed for the TB145 with steel crawlers? keyboard_arrow_down

2.6 km/h (1.62 mph) is the 1st speed travel, and 4.3 km/h (2.67 mph) is the 2nd speed travel for the TB145 with steel crawlers.

Can you **calculate** the specific troubleshooting procedures for when the digging force is insufficient? keyboard_arrow_down

If digging force is insufficient, first replenish the hydraulic oil to the prescribed level (Refer to page 105). If the issue persists, perform the warm-up procedure (Refer to page 66), clean the air cleaner (Refer to page 117), or replace the hydraulic oil (Refer to page 123).

What values are **designated** for the engine oil capacity? keyboard_arrow_down

The engine oil capacity for the TB125 is 2.4 to 3.6 L (2.5 to 3.8 US qt.), for the TB135 it is 2.9 to 4.7 L (3.1 to 5.0 US qt.), and for the TB145 it is 4.0 to 7.4 L (4.2 to 7.8 US qt.)

How do I **assess** the critical component identification for the air cleaner? keyboard_arrow_down

To clean the air cleaner element, open the engine hood, loosen the clamp (1) and remove the dust cup (2), then remove the element (3). Clean the element with dried compressed air, ensuring air blows from the inside of the element first, then the outside, and finally the inside again.

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