Mitsubishi 4D56 Diesel Engine Service Manual 1994+
The history of the much famed power plant manufactured by Mitsubishi can be traced back to 1972 with the introduction of the 4G5 as a collaboration between Aston and Mitsubishi. However in 1980, the 4 cylinder, belt driven overhead camp shaft diesel power-plant was introduced by Mitsubishi and is the much famed workhorse the “4D56”. The production of this engine which began in 1980’s is still continuing to this date with only minor variations while the most significant being the introduction of the common rail fuel injection system.
Mitsubishi engines are known for its power and the longevity of the 4D56 is due to many reasons, cost effectiveness in maintaining, reliability, power and a fairly easy engine to maintain.
In Sri Lanka, where we have our set of wheels, the 4D56 is a workhorse, known by any mechanic around the country. So the chances of getting into a fix is fairly remote since the mechanics have decades of experience in maintaining these engines.
How come Mitsubishi is still manufacturing this engine without discontinuing it like the other manufactures. The answer is simple. If it serves the purpose and can keep upto any new engine why change. Yes, it delivers good power (in comparison to any stock vehicle), cheap to maintain, reliable and if serviced properly with the fuel pump and injectors in good condition would provide a running economy of approx. 12-14 km per liter of diesel.
However in the mid 90’s Mitsubishi introduced a much powerful 4M4 engine which it fixed to its Pajero’s, Montero’s etc., though continuing to still fix the 4D56 to its UTE’s citing reliability.
- GENERAL INFORMATION
- GENERAL SPECIFICATIONS
- SERVICE SPECIFICATIONS
- TORQUE SPECIFICATIONS
- SPECIAL TOOLS
- DRIVE BELT AND GLOW PLUG
- TIMING BELT
- FUEL INJECTION PUMP AND INJECTION NOZZLE
- INJECTION NOZZLE HOLDER
- INTAKE AND EXHAUST MANIFOLDS
- WATER PUMP, THERMOSTAT, HOSE AND PIPE
- ROCKER ARMS, ROCKER SHAFT AND CAMSHAFT
- CYLINDER HEAD AND VALVES
- FRONT CASE AND OIL PAN
- PISTON AND CONNECTING ROD
- CRANKSHAFT AND CYLINDER BLOCK