Mitsubishi S6R, S6R2 Diesel Engine Service Manual (tp6848)

These S6R and S6R2 engines usually sit in generators, pumps, or industrial drives that run hard in hot, dusty, or coastal environments. This service manual is what I’d keep open when I need to prove what’s actually failed before ordering expensive parts. For example, if a set runs rough under load and smokes, I’d use this book to trace fuel and air problems step by step, verify clearances and settings, and only then tear into the components that truly need work.

Applications & Use Cases

Walk through diagnostic sequences to isolate hard-start, low-power, or overheating complaints before stripping the engine.
Follow the disassembly/assembly order so you don’t miss hidden fasteners, seals, or alignment marks on major components.
Use the adjustment procedures to set linkages, timing, and clearances after repairs so the engine comes back on spec.
Confirm test points and inspection items when checking pumps, injectors, or valve gear on a scheduled overhaul.
Verify parts relationships and routing—hoses, lines, brackets—so everything goes back exactly where it belongs.

FAQ

Q: Can I use this on a tablet at the genset?

A: Yes, it’s practical to keep it on a tablet or laptop so you can zoom diagrams and search quickly while working beside the unit.

Q: Is it worth printing sections of this manual?

A: Many techs print only the procedures they’re doing that day, then mark notes or measurements directly on the pages in the shop.

Safety Note

Always lock out the prime mover and isolate fuel, air, and electrical sources before following any procedure from this manual.

📘 Show Index

Mitsubishi S6R, S6R2 Diesel Index:

Chapter 1 GENERAL
1. External View
2. Outline of Systems
3. Contents of Plate and Label
4. Specifications
Chapter 2 SERVICE DATA
1. Maintenance Service Data
2. Tightening Torque Table
Chapter 3 SERVICE TOOLS
1. Special Tools
Chapter 4 OVERHAUL INSTRUCTIONS
1. Determining Overhaul Timing
2. Compression Pressure – Measure
Chapter 5 DISASSEMBLY OF BASIC ENGINE
1. Cylinder Heads and Valve Mechanisms – Disassemble and Inspect
2. Rear Mechanism – Disassemble and Inspect
3. Front Mechanism – Disassemble and Inspect
4. Cylinder Liner, Piston and Connecting Rod – Disassemble and Inspect
5. Crankcase, Crankshaft and Main Bearing – Disassemble and Inspect
Chapter 6 INSPECTION AND REPAIR OF BASIC ENGINE
1. Cylinder Head and Valve Mechanism – Inspect and Repair
2. Rear Mechanism – Inspect and Repair
3. Front Mechanism – Inspect and Repair
4. Piston and Connecting Rod – Inspect and Repair
5. Crankcase and Crankshaft – Inspect and Repair
Chapter 7 ASSEMBLY OF BASIC ENGINE
1. Crankshaft and Main Bearing – Install
2. Cylinder Liner, Piston and Connecting Rod – Assemble
3. Front Mechanism – Assemble
4. Rear Mechanism – Assemble
5. Cylinder Head and Valve Mechanism – Assemble
Chapter 8 FUEL SYSTEM
1. Fuel System – Remove and Inspect
2. Fuel System – Disassemble, Inspect and Assemble
3. Fuel System – Install
Chapter 9 LUBRICATION SYSTEM
1. Lubrication System – Remove and Inspect
2. Lubrication System – Disassemble, Inspect and Assemble
3. Lubrication System – Install
Chapter 10 COOLING SYSTEM
1. Cooling System – Remove and Inspect
2. Cooling System – Disassemble, Inspect and Assemble
3. Cooling System – Install
Chapter 11 INLET AND EXHAUST SYSTEMS
1. Inlet and Exhaust Systems – Remove and Inspect
2. Inlet and Exhaust Systems – Disassemble, Inspect and Assemble
3. Inlet and Exhaust Systems – Install
Chapter 12 AIR START SYSTEM
1. Air Start System – Remove and Inspect
2. Air Start System – Disassemble, Inspect and Assemble
3. Air Start System – Install
Chapter 13 ADJUSTMENT AND OPERATION
1. Engine – Adjust
2. Break-in Operation
3. Engine-Test and Adjustment