Model:
6D125-2 Diesel Engine
Model Variants:
6D125-2, S6D125-2, SA6D125-2, SAA6D125-2
Production Years:
N/A - not specified in the manual
Engine Type:
Diesel, 4-stroke, water-cooled
Displacement:
11.04 L (approximate, based on 125 mm bore and 150 mm stroke)
Configuration:
Inline 6-cylinder
Target Audience:
Owners and professional technicians servicing Komatsu 6D125-2 diesel engines
Applications:
Heavy-duty industrial and construction machinery, including D53A-17, D65EX-12, WA470-3, PC400-6 and others
Comprehensive Coverage:
Includes General Information, Engine Mechanical, Fuel System, Exhaust System, Cooling System, Lubrication System, Electrical System, Intake System, and Preheating System
Step-by-Step Guides:
Complete instruction pictures, diagrams, and lists of required tools
Systems Covered:
General Information, Engine Mechanical, Fuel System, Exhaust System, Cooling System, Lubrication System, Electrical System, Intake System, Preheating System
Page Count:
N/A - not specified
Manual Type:
Shop Service Manual
Delivery:
Instant download
General Information:
Covers engine identification, specifications, and general service information
Engine Mechanical:
Detailed procedures for cylinder head, cylinder block, pistons, crankshaft, camshaft, and valvetrain
Fuel System:
Fuel injection pump, injectors, fuel lines, filters, and governor adjustments
Exhaust System:
Exhaust manifold, turbocharger (if equipped), and related components
Cooling System:
Water pump, thermostat, radiator, fan, and cooling circuit maintenance
Lubrication System:
Oil pump, oil cooler, filters, and lubrication circuit
Electrical System:
Alternator, starter motor, wiring, sensors, and charging system
Intake System:
Air cleaner, intake manifold, and turbocharger (if equipped) service
Preheating System:
Glow plug system and cold-start aids
Troubleshooting:
Diagnostic steps for engine performance issues
Disassembly and Assembly:
Step-by-step overhaul procedures
Inspection and Adjustment:
Clearances, torque specifications, and wear limits
Testing:
Procedures for testing components and systems
Tool List:
Required tools for each procedure
Level:
Comprehensive; suitable for professional technicians and experienced DIY owners
Illustrations:
Complete instruction pictures and diagrams
Specifications:
Detailed technical specifications included
Parts Diagrams:
Exploded views and component identification
Part Numbers:
N/A - not consistently provided; may require separate parts catalog
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Model:
6D125-2, S6D125-2, SA6D125-2, SAA6D125-2
Cylinder Configuration:
Inline 6-cylinder
Displacement:
11.04 L (approximate)
Compression Ratio:
N/A - not specified in the manual
Firing Order:
1-5-3-6-2-4
Aspiration:
Naturally aspirated (6D125-2) or turbocharged (S6D125-2, SA6D125-2, SAA6D125-2)
Horsepower:
N/A - varies by application and variant
Torque:
N/A - varies by application and variant
Rated Speed:
N/A - not specified in the manual
Idle Speed:
N/A - not specified in the manual
Fuel Injection Type:
Direct injection
Injection Pump:
N/A - specific model not specified
Governor:
Mechanical or electronic (varies by variant)
Fuel Filter:
Spin-on or cartridge type
Length:
N/A - not specified in the manual
Width:
N/A - not specified in the manual
Height:
N/A - not specified in the manual
Weight (dry):
N/A - not specified in the manual
Wheelbase:
N/A - not applicable to engine
Curb Weight:
N/A - not applicable to engine
Oil Change Interval:
N/A - refer to machine application and manual for specific intervals
Filter Replacement:
N/A - refer to manual for specific intervals
Valve Clearance Adjustment:
N/A - refer to manual for specific intervals
Engine Oil:
Refer to manual for recommended viscosity and grade
Coolant:
Refer to manual for recommended type and mixture
Common Wear Items:
N/A - see manual for specific wear limits and replacement criteria
