Description

Mitsubishi 4D30, 4D31, 4D32, 4DR5, 6DR5 Engine Service Manual

Manual for Mitsubishi 4D30, 4D31, 4D32, 4DR5, 6DR5 Engine
Format: PDF
Engine Brand: Mitsubishi
Issued 09-1990
Shop Manual Publication 97811-03021 NA

Mitsubishi 4D31, 4D31-T 4D32, 4DR5 Engine Workshop Service Manual: 444 Pages
Mitsubishi 4D31, 4D31-T, 4D30, 4DR5, 6DR5 Engine Workshop Service Manual: 596 Pages

TABLE OF CONTENT OF THE 4D30, 4D31, 4D32, 4DR5, 6DR5 ENGINES MANUAL

General
Engine
Lubrication
Fuel and Engine control
Cooling
Engineer electrical
Clutch
Transmission
Special Equipment

This shop manual contains the specifications, construction, operation, adjustment and service procedures of the Model 4D30, 4D31, 4D32, 4DR5, 6DR5 diesel engine for service mechanics engaged in servicing of the Mitsubishi diesel engines.

Please make the most of this service workshop manual to perform correct servicing and operations.
Note that some of the contents of this service manual are subject to change owing to improvements, etc. that may be introduced after publication of the service manual.

The combustion chamber consists of the cylinder head and toroidal pistons, hole type injection nozzles and sheathed type glow plugs being installed in the cylinder head.
Combustion occurs when the fuel is directly injected into the combustion chamber with the power operat-ing the piston directly.
The combustion chamber in the Engines 4D30, 4D31, 4D32, 4DR5, 6DR5 is formed by the lobes-shaped main combustion chamber in the piston head and Mitsubishi’s own bell-shaped swirl chamber. A chamber jet is press-fitted into the swirl chamber that is made of material with little thermal expansion and good thermal conductivity. Also installed in the chamber are the sheathed glow plug and throttle injection nozzle.

The upward movement of the piston during the compression stroke imparts a violent swirling motion to the air charged into the swirl chamber, to which fuel is injected for combustion. As the combustion goes on, the gas moves from the swirl to main combustion chamber where it is mixed with the air present. And further combustion occurs.

Manual Compatible with Mitsubishi Engine: 4D30, 4D31, 4D31-T, 4D32, 4DR5 and 6DR5
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