Rebuilding a Mitsubishi 4D31, 4D31-T, 4D32, or 4DR5 diesel? This 444-page Mitsubishi 4D32 shop manual PDF (OEM #97811-03021 NA) covers all four engines from cylinder head to transmission. You get factory wiring diagrams for the complete engine electrical system, exploded views of every major assembly, and full teardown procedures for the injection pump, governors, and automatic timers. A dedicated troubleshooting section walks you through lubrication, cooling, and fuel faults, plus clutch and transmission service for the whole driveline. Torque tables and service standards sit up front where you can find them fast. Set tappet-to-crankcase bore clearance between 0.06 and 0.10 mm, and confirm each piston carries two compression rings and one oil ring before reassembly. Injection pumps don't forgive guesswork. This bookmarked PDF opens on any device; grab your tablet, walk out to the engine, and start wrenching.
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What's Inside This Mitsubishi 4D31, 4D31-T, 4D32, 4DR5 Manual
| System | Pages | Key Topics |
|---|
| General | 12-19 | External View, Major Specifications |
| Engine | 20-97 | Cylinder Head and Valve Mechanism, Flywheel and Rear Plate, Timing Gear and Camshaft, Crankcase and Main Moving Parts, Measurement of Compression Pressure |
| Lubrication | 98-125 | General, Specifications, Service Standards, Special Tool, Oil Pump, Oil Filter, Oil Cooler and Oil Strainer, Troubleshooting |
| Fuel and Engine Control | 126-245 | Injection Pump, Governors, Automatic Timers, Feed Pump, Injection Nozzle, Fuel Filter |
| Cooling | 246-267 | Water Pump, Thermostat, Radiator, Cooling Fan, V-Belt Tension, Cleaning the Cooling System |
| Intake and Exhaust | 268-297 | Air |
| Engine Electrical | 298-367 | |
| Clutch | 368-387 | |
| Transmission | 388-433 | |
| Special Equipment | 434-444 | Brake Drum, Brake Lining, Brake Shoe Return Spring, Companion Flange, Shoe and Lining Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Fuel and Engine Control | 13 | p. 4 |
| Cooling | 14 | p. 4 |
| No. of piston rings | Compression ring: 2; Oil ring: 1 | p. 28 |
| Tappet to crankcase tappet hole clearance | [28] 0.06 to 0.10 | p. 29 |
| Oil filter type | filter paper full-flow type with a regulator valve, bypass valve and oil bypass alarm in its head | p. 104 |
| Tappet replacement | Replace | p. 238 |
| Loaded gauze filter remedy | Clean | p. 238 |
| Water pump removal and installation | 247 | p. 247 |
| Cooling system cleaning | 258 | p. 247 |
| Bleeding the cooling system | 260 | p. 247 |
| Coolant capacity (Engine proper) | Approx. 5 lit. | p. 244 |
