Mitsubishi S16R, S16R2 Diesel Engine Service Manual (tp6856)

These S16R and S16R2 engines usually sit in generator sets or heavy industrial installations, running long hours in hot, dusty, or coastal environments. This service manual is what I’d keep on hand when I need to prove a fault before pulling a major component, and to put everything back together in the right sequence. For example, if a unit is hunting under load, I’d use this to trace fuel and governor issues step by step instead of guessing and swapping expensive parts.

Applications & Use Cases

Isolate hard-start or no-start conditions by methodically checking fuel, air, and timing-related items.
Trace overheating complaints by following the cooling system checks and confirming flow, routing, and basic adjustments.
Support major teardown jobs (heads, fuel equipment, auxiliaries) so parts come off and go back on in a controlled, documented order.
Verify clearances and basic adjustments after overhaul so the engine runs smoothly and doesn’t eat itself early.
Cross-check what you see on the engine against the manual to confirm you’re replacing the correct component or gasket set.

FAQ

Q: Can I use this manual 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 follow procedures right next to the engine.

Q: Is it worth printing sections of this manual?

A: Many techs print the pages for the job they’re doing, mark notes or measurements on them, and keep the clean master file stored digitally.

Safety Note

Always lock out the prime mover and verify the engine cannot start before opening any covers or disconnecting components.

📘 Show Index

Mitsubishi S16R, S16R2 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 and inspect
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
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