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General| Bore x Stroke | 102 mm x 118 mm |
|---|---|
| Compression Ratio | 17.5:1 |
| Cylinder arrangement | Inline 4 |
| Cooling system | Water-cooled |
| Fuel System | Direct injection |
| Aspiration | Naturally aspirated |
| Engine Type | Diesel |
| Displacement | 3.9 L |
| Valvetrain | OHV (Overhead Valve) |
Details procedures for performing general engine repairs, including safety precautions and tool usage.
Explains the structure, symbols, and conventions used throughout the workshop manual for clarity.
Presents key technical data and specifications for various engine models covered in the manual.
Describes the main design features and general outline of the ISUZU 4B and 6B series industrial diesel engines.
Lists essential tightening torque values for various nuts and bolts used in engine assembly and disassembly.
Explains the procedure for tightening nuts and bolts using an angular method for precise assembly.
Illustrates and specifies torque values for fasteners securing major engine components like cylinder head and cover.
Provides guidance on identifying engine models and injection pump specifications for service purposes.
Covers the general description, oil pump, main oil filter, and oil cooler of the engine's lubricating system.
Details the general description, fuel filter, injection nozzle, and injection pump calibration data for the fuel system.
Explains the disassembly, inspection, repair, and reassembly procedures for the engine's injection nozzles.
Describes the operation, inspection, and repair of the water separator or sedimentor in the fuel system.
Outlines the procedure for bleeding air from the fuel system to ensure proper engine operation.
Covers the general description, water pump, and thermostat of the engine's cooling system.
Provides detailed steps and specifications for adjusting the valve clearance on the engine.
Specifies the correct torque value for the rocker arm screw lock nut during engine assembly.
Explains the procedure and importance of setting the correct injection timing for optimal engine performance.
Details the method for measuring engine compression pressure to diagnose performance issues.
Guides on inspecting the turbocharger for proper function, including checks for air and oil leaks.
Lists the components included in the engine repair kit for non-turbocharged engine models.
Lists the components included in the engine repair kit for turbocharged engine models.
Provides recommendations for the types and grades of lubricants suitable for different engine configurations.
Presents a chart indicating engine oil viscosity grades suitable for various ambient temperatures.
Details the step-by-step procedure for disassembling external engine components from the right-hand side.
Details the step-by-step procedure for disassembling external engine components from the left-hand side.
Illustrates and lists the major components of the engine assembly, part one, for disassembly reference.
Illustrates and lists the major components of the engine assembly, part two, for disassembly reference.
Provides steps for the disassembly of the rocker arm and rocker arm shaft assembly.
Details the procedure for safely disassembling the engine's cylinder head and its related parts.
Outlines the steps required to disassemble the piston and connecting rod assembly from the engine.
Describes methods for inspecting the cylinder head for flatness, cracks, and water leakage.
Explains how to inspect valve guides for wear and measure valve depression and contact width.
Details procedures for checking valve springs, including free length, inclination, and tension.
Guides on inspecting tappets for wear and push rods for run-out and straightness.
Covers the inspection of rocker arm shafts and rocker arms for wear, damage, and abnormalities.
Provides methods for inspecting camshaft journals, bearings, and idler gears for wear and clearance.
Details procedures for inspecting cylinder liner projection and measuring cylinder bore dimensions.
Covers inspection of crankshaft journals and crankpins, including bearing clearances and run-out.
Explains the procedure for replacing oil seal wear rings on the crankshaft.
Details the step-by-step process for reassembling the piston and connecting rod components.
Provides instructions for the correct reassembly of the engine's cylinder head and its associated parts.
Guides on the reassembly of the rocker arm and rocker arm shaft assembly.
Illustrates and outlines the reassembly steps for major engine components, Part I.
Illustrates and outlines the reassembly steps for major engine components, Part II.
Details the step-by-step procedure for reassembling external engine components from the left-hand side.
Details the step-by-step procedure for reassembling external engine components from the right-hand side.
Describes the procedure for tuning the engine after reassembly to ensure optimal performance.
Provides an overview of the lubricating system, its function, and key components.
Details the disassembly, inspection, repair, and reassembly of the engine's oil pump.
Covers the disassembly, inspection, repair, and reassembly of the main engine oil filter.
Explains the disassembly, inspection, repair, and reassembly procedures for the engine's oil cooler.
Provides an overview of the cooling system, its function, and main components.
Details the disassembly, inspection, repair, and reassembly procedures for the engine's water pump.
Covers the inspection and function of the engine's thermostat.
Provides an overview of the fuel system, its function, and key components.
Details the disassembly, inspection, repair, and reassembly of the engine's fuel filter.
Explains the disassembly, inspection, repair, and reassembly procedures for the engine's injection nozzles.
Outlines the procedure for adjusting the injection starting pressure of the injection nozzles.
Presents calibration data and specifications for the engine's injection pump.
Provides an overview of the turbocharger, its function, and its identification.
Explains how to identify turbocharger models and their specifications using the nameplate.
Details the procedure for inspecting rotor shaft play (axial and radial) in the turbocharger.
Provides an overview of the air compressor, its main data, and functions.
Details the step-by-step procedure for disassembling the air compressor.
Covers the inspection and repair procedures for various components of the air compressor.
Details the step-by-step procedure for reassembling the air compressor.
Explains how to identify starter motor models using their identification plates.
Presents the main data and specifications for different starter motor models.
Explains how to identify alternator models using their identification plates.
Presents the main data and specifications for different alternator models.
Troubleshooting guide for diagnosing and resolving issues related to hard engine starting.
Troubleshooting guide for diagnosing and resolving issues causing unstable or low engine idling.
Troubleshooting guide for diagnosing and resolving issues related to reduced engine power output.
Troubleshooting guide for diagnosing and resolving issues causing high fuel consumption.
Troubleshooting guide for diagnosing and resolving issues related to excessive engine oil consumption.
Troubleshooting guide for diagnosing and resolving engine overheating problems.
Diagnoses causes and provides remedies for white smoke emitted from the engine exhaust.
Diagnoses causes and provides remedies for dark smoke emitted from the engine exhaust.
Troubleshooting guide for diagnosing why engine oil pressure is not rising.
Diagnoses causes and provides remedies for abnormal noises produced by the engine.
Lists specialized tools required for engine maintenance and repair procedures.
Provides conversion factors for length measurements between different units.
Facilitates conversion of measurements from metric to imperial units and vice versa.
Offers conversion tables for distances between kilometers and miles.
