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General| Aspiration | Naturally Aspirated |
|---|---|
| Series | 3JH2 Series |
| Cooling System | Fresh Water Cooling |
| Starting System | Electric Start |
| Lubrication System | Forced Lubrication |
| Direction of Rotation | Counterclockwise, viewed from flywheel side |
Illustrations detailing the external components of the 3JH2 series engines.
Detailed technical specifications for 3JH25A, 3JH30A, and 3JH2-TE engine models.
Provides engine outlines and dimensional drawings for various 3JH2 models.
Graphs illustrating performance characteristics like power, torque, and fuel consumption.
Schematic diagrams showing the routing of fuel, oil, and cooling systems.
Procedures for inspecting and maintaining the cylinder block, including crack checks.
Details on the cylinder head construction, inspection, and valve seating.
Information on piston and piston pin construction, measurement, and replacement.
Guidance for inspecting connecting rods, including twist, parallelism, and clearance.
Details on crankshaft and main bearing inspection, measurement, and replacement.
Procedures for inspecting camshaft and tappet dimensions and wear.
Information on timing gear inspection, back lash, and timing marks.
Specifications and dimensions for the flywheel and housing assembly.
Service data for fuel injection pumps, including adjustment and calibration specifications.
Procedures for disassembling, inspecting, and reassembling the governor.
Step-by-step instructions for disassembling and reassembling the fuel injection pump.
Guidance on adjusting fuel injection pump and governor settings for optimal performance.
Construction, specifications, and inspection of the fuel feed pump.
Information on fuel injection nozzle function, inspection, and adjustment.
Diagnosing and resolving common faults in the fuel injection system.
List and application of specialized tools for fuel system maintenance.
Specifications and maintenance procedures for the fuel filter.
Specifications for the optional fuel tank.
Description of the intake and exhaust systems for 3JH2 engines.
Specifications, construction, and maintenance of the turbocharger.
Construction and inspection of the mixing elbow for exhaust systems.
Diagram and explanation of the engine's lubrication system flow.
Details on the lube oil pump's construction, specifications, and inspection methods.
Information on lube oil filter construction and replacement procedures.
Construction and replacement of the oil pressure control valve.
Construction and inspection of the lube oil cooler.
Construction and inspection of the piston cooling nozzle.
Construction and inspection of the optional rotary waste oil pump.
Description of the cooling water circulation system and component functions.
Construction, specifications, and inspection of the sea water pump.
Construction, specifications, and inspection of the fresh water pump.
Construction, specifications, and inspection of the heat exchanger.
Construction, specifications, and inspection of the pressure cap and sub tank.
Function, construction, and testing of the thermostat.
Construction and inspection of the optional Kingston cock.
Description of the optional sea water filter and its maintenance.
Specifications for the optional bilge pump and strainer.
Detailed construction and specifications for KM3A, KM3P1, KM3P3, KM35P1 marine gears.
Explanation of the shifting mechanism, clutch operation, and adjustments.
Procedures for inspecting and servicing clutch, bearings, gears, and drive cones.
Step-by-step instructions for disassembling the reduction and reversing gear.
Step-by-step instructions for reassembling the reduction and reversing gear.
Overview of the remote control system components and function.
Instructions for installing speed control, clutch control, and engine stop cables.
Checks and adjustments for ensuring proper operation of the remote control.
Procedures for adjusting the shift and throttle controls.
System diagrams for electrical parts, including B2 and C types.
Details on battery construction, capacity, cables, and charging procedures.
Information on starter motor construction, disassembly, and inspection.
Specifications, features, and operating principles of the alternator.
Diagrams showing the layout of B2 and C type instrument panels.
Description and troubleshooting for oil pressure and water temperature warning devices.
Specifications and mounting details for the optional air heater.
Details on the optional electric engine stopping device and its wiring.
Specifications, construction, and troubleshooting for the tachometer.
Specifications and construction of the optional 12V/80A alternator.
General precautions and guidelines for disassembling and reassembling the engine.
Lists specialized tools and general hand tools required for disassembly and reassembly.
Detailed step-by-step procedures for engine disassembly and reassembly.
Table of specified tightening torques for various bolts and nuts.
Instructions for performing test runs after engine assembly.
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