Komatsu Sad 125e 3 Engine Repair Manual

This PDF manual covers the repair and overhaul of Komatsu SA6D 125E 3 and assumes that the technician is fully conversant with general automobile practices. komatsu-sa6d-125e-3-engine-service-manual

📘 Manual Overview

Engine Model: SA6D125E-3
Engine Type: 6-cylinder, direct injection, turbocharged diesel
Manual Format: PDF (searchable and printable)
Use Case: Workshop maintenance, engine rebuilds, diagnostics

🛠️ 1. General Information

Engine identification and serial number location
Safety precautions for engine disassembly and handling
Special tools and their applications
Metric torque and tightening specifications

⚙️ 2. Engine Mechanical

Full disassembly and reassembly instructions
Cylinder head removal, inspection, and installation
Valve clearance adjustment procedures
Timing gear and gear train servicing
Oil pan, piston, and crankshaft service

🧊 3. Cooling System

Water pump removal and overhaul
Thermostat testing and replacement
Radiator flushing and leak checks
Coolant flow diagram

🔧 5. Fuel System

Fuel injection pump removal and timing
Injector nozzle testing and servicing
Fuel filter replacement
Fuel return lines and connections

🔋 6. Lubrication System

Oil pump disassembly and inspection
Relief valve checks and settings
Oil cooler testing
Engine oil pressure testing procedures

🔍 7. Testing & Troubleshooting

Common engine problems and symptoms
Compression testing and interpretation
Engine performance diagnostics
Leak detection and seal inspections

The manual includes many specifications and procedures that were available in an authorized Komatsu SA6D 125E 3 dealer service department. It provides information and procedures for routine maintenance and servicing. It offers diagnostic and repair procedures to follow when trouble occurs.