Komatsu 6D125 Series Diesel Engine Shop Manual

Technical reference for the 1998 Komatsu 6D125 Series diesel engines, including S6D125 and SA6D125 models. Details structure, function, and maintenance. PN 00-1

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Document Details

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Document Number / Seller:
28724 / Rebecca Scott
File Size:
27.73 MB
File Type:
ZIP
Language:
Printable:
Yes
Category:
Diesel Engine
Last updated / verified
Mar 13, 2025

Models Covered & Key Technical Specifications

Technical Procedure Factory Manual: Diesel Engine Official-Issue Komatsu 6D125 series manual: S6D125, SA6D125 Parts-Reference Komatsu 125 Series (00-1) - Diesel Engine Manual. Engineering Manual Archive Package.

  • Measured Power Framework: For optimal output, 146/1800 establishes the maximum engine performance Range.
  • Established Operating Temps: The standard operating temperature range is 40 to 45°C for optimal performance Configuration.
  • Factory Cycle Rate: The engine operates at a low idling speed between 650 - 700 rpm for consistent operation Benchmarks.
  • Approved Package Size: The engine's dry weight is 970 kg, suitable for various heavy-duty applications Baseline.
  • Reference Current Rating: The fuel pump type is specified as Bosch PE-NB, ensuring reliable performance Parameters.
  • Critical Moment Values: The maximum torque is 68/1,300 kgm/rpm, indicating robust power delivery Sequences.

Professional Workshop Service Manual & Technical Specifications

Technical Procedure Factory Manual: Diesel Engine Official-Issue Komatsu 6D125 series manual: S6D125, SA6D125 Parts-Reference

Komatsu 6D125 Series (00-1) // Operational-Framework: Diesel Engine / Diesel Engine Logic // Operational-Framework: Technical-Documentation.

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Component System-Path Context
Engine model 6D125-1 Applicable machine: D50A-17, D50P-17, D50F-17, D53A-17
Bore x Stroke (mm) 6 – 125 x 150 All models listed above
Total piston displacement (cc) 11,040 All models listed above
Firing order 1 – 5 – 3 – 6 – 2 – 4 All models listed above
Flywheel horsepower (HP/rpm) 120/1,750 to 165/1,800 Varies by model, see specs.
Maximum torque (kgm/rpm) 64.8/1,300 to 81.5/1,100 Varies by model, see specs.
Dry weight (kg) 970 to 1,275 Varies by model, see specs.

Introduction: Service procedures are grouped by chapter for ease of understanding. This manual contains the necessary technical information for operations performed in a service shop, giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgments. Completely requiring...

Assembly instructions are detailed for the engine's main circulation part, including the oil pump and relief valve.

Detailed diagrams and explanations cover the engine's fuel system, including the fuel tank, pump, filters, and injection nozzles.

Hydraulic schematics are included for the cooling system, showing the radiator, water pump, thermostat, and oil cooler.

Information on the electrical system, including the alternator, starting motor, and air heater, is provided.

Steering component information is provided for the engine stop motor and related circuits.

Maintenance standards and repair procedures for various components are documented.

Torque Statement: This manual documents torque specifications for components to ensure proper flange face sealing.

FAQ

Reference the **specified** tool requirements keyboard_arrow_down

17.16 [175] kg/cm² is the specified nozzle opening pressure, requiring specific tools for calibration.

What are the **essential** electrical values keyboard_arrow_down

24V, 13A is the standard specification for alternators across multiple models.

Specify the **correct** calibration settings keyboard_arrow_down

On page 12-007, calibration data for the D50A-17, P-18 indicates a rack position of 9.5 mm (basic point) with an injection volume of 75.5 cc/1000st for the manufacturer's standard.

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Reviews (5)

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The download link came through almost immediately after purchase. Excellent customer service when I had a question!
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The shop manual is extremely detailed and easy to follow. Perfect for anyone working on the Komatsu engine!
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I appreciated the quick response from support when I had trouble accessing the download. Smooth experience overall!
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Rated 5 out of 5 stars
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This manual covers everything from disassembly to maintenance. A must-have for any serious mechanic!