This comprehensive factory service and repair manual provides detailed instructions and guidance for maintaining, servicing, diagnosing, and repairing MAN-Marine Diesel Engines D 2866 LE 401 402 403 405, D 2876 LE 301, and D 2876 LE 403. The manual offers step-by-step instructions, accompanied by highly detailed exploded pictures and diagrams, ensuring you complete each task correctly and efficiently. The manual covers a wide range of repair procedures, including: * **Preface:** Introduces the manual and provides essential information. * **Instructions and Safety Instructions:** Provides crucial guidelines for safe and effective operation. * **General Information on Engine Overhaul:** Provides comprehensive information regarding engine overhaul procedures. * **Troubleshooting Table:** Aids in quickly identifying and resolving potential engine issues. * **Engine Views, Cross-Sections, and Schematic Diagrams:** Offers detailed visual representations of engine components and systems, including lubrication, fuel, and cooling systems. * **Fuel System:** Covers procedures for checking and adjusting fuel delivery, removing and installing injection pumps and fuel injectors, cleaning filters, and repairing fuel injectors. * **Cooling System:** Details procedures for draining and filling with coolant, removing and installing thermostats, water pumps, expansion tanks, heat exchangers, and heat exchanger pipe sets. * **Lubrication:** Covers procedures for changing oil filters, removing and installing oil coolers and pumps, and inspecting oil spray nozzles. * **Flywheel/Crankshaft Seal:** Provides instructions for removing and installing the vibration damper, changing front crankshaft seals, removing and installing flywheels, replacing gear rings, removing and installing crankshaft seals, and exchanging bearing races. * **Intake/Exhaust System:** Details procedures for removing and installing intake and exhaust manifolds, troubleshooting turbochargers, checking charge-air pressure, removing and installing turbochargers, checking turbocharger rotor shaft play, exchanging waste gates, and removing and installing intercoolers. * **Cylinder Head:** Covers procedures for removing and installing cylinder heads, setting valve clearance, disassembling and assembling rocker arms, removing and installing valves and valve guides, replacing valve seat inserts, reworking valve seats, refacing valves, checking compression, and adjusting valve timing. * **Valve Timing:** Provides instructions for removing and installing the timing case, camshaft, and camshaft bearing bushes, and checking valve timing. * **Crankgear, Pistons:** Covers procedures for removing and installing crankshafts, pistons with connecting rods, removing and attaching pistons to connecting rods, checking and changing connecting rods, removing, installing, and changing piston rings, replacing cylinder liners, and measuring piston protrusion. * **Attachments:** Details procedures for removing and installing starters, replacing V-belts, inspecting the coolant level probe, inspecting transmitters, and using special tools. * **Index:** Provides a comprehensive index for easy reference. This manual is an invaluable resource for mechanics, technicians, and DIY enthusiasts who want to confidently maintain and repair MAN-Marine Diesel Engines.

The MAN-Marine D 2866 LE and D 2876 LE series of marine diesel engines represent a pinnacle of engineering excellence, designed for demanding marine applications. These powerful and reliable engines are renowned for their robust construction, fuel efficiency, and exceptional performance. The D 2866 LE series encompasses models 401, 402, 403, and 405, each tailored to specific power requirements. The D 2876 LE series features models 301 and 403, offering a range of power outputs and configurations. These engines are commonly found in various marine vessels, including workboats, fishing boats, yachts, and passenger ferries. The D 2866 LE and D 2876 LE series engines are built to withstand the rigors of marine environments. Their robust construction utilizes high-quality materials and advanced manufacturing techniques to ensure exceptional durability and longevity. The engines are equipped with a range of features that enhance their performance and efficiency, including turbocharging, electronic fuel injection, and advanced engine management systems. The D 2866 LE and D 2876 LE series engines are known for their low fuel consumption and reduced emissions, making them environmentally conscious choices for marine operations. Their reliable operation and ease of maintenance contribute to their overall attractiveness for marine professionals.