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Mitsubishi 4D56 engine factory workshop and repair manual 1991 onwardson PDF can be viewed using free PDF reader like adobe , or foxit or nitro . It is compressed as a zip file which you can extract with 7zip File size 6 Mb Searchable PDF document with bookmarks. Manual Contents About the 4D5 engineThe Mitsubishi Astron or 4G5 engine, is a series of straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time. It employed a hemispherical cylinder head, chain-driven single overhead camshaft (SOHC) and eight valves (two per cylinder). United States passenger car versions had a small secondary intake valve referred to as the "Jet Valve". This valve induced swirl in the intake charge, enabling the use of leaner fuel/air mixtures for lower emissions. It was designed as a cartridge containing the valve spring and seat which simply screwed into a threaded hole in the head, similar to a spark plug but inside the cam cover. The rocker arms for the intake valve were widened on the valve end to accommodate the cartridge, which was equipped with a very soft valve spring in order to avoid wear on the camshaft intake lobe. Modifications to the head were thereby reduced as the Jet Valve negated the necessity for a three-valve-per-cylinder design. In 1975, the Astron 80 introduced a system dubbed "Silent Shaft": the first use of twin balance shafts in a modern engine. It followed the designs of Frederick Lanchester, whose original patents Mitsubishi had obtained, and proved influential as Fiat/Lancia, Saab and Porsche all licensed this technology. The 4D5 engine is a range of four-cylinder belt-driven overhead camshaft diesel engines which were part of the "Astron" family, and introduced in 1980 in the then new fifth generation Galant. As the first turbodiesel to be offered in a Japanese passenger car, it proved popular in the emerging SUV and minivan markets where Mitsubishi was highly successful, until superseded by the 4M4 range in 1993. However, production of the 4D5 (4D56) continued throughout the 1990s as a lower-cost option than the more modern powerplants. Until now it is still in production, but made into a modern powerplant by putting a common rail direct injection fuel system into the engine. Displacement - 2.5 L (2,476 cc) Power - 55 kW (74 hp) at 4,200 rpm Non-intercooled Turbo Power - 84 PS (62 kW) at 4,200 rpm Non-intercooled Turbo (TD04 Turbo) Power - 90 hp (67 kW) at 4,200 rpm Intercooled Turbo (TD04 watercooled Turbo) Power - 78 kW (104 hp) at 4,300 rpm Intercooled Turbo (1st Generation DI-D) Power - 85 kW (114 hp) at 4,000 rpm Intercooled Turbo (2nd Generation DI-D) Power - 100 kW (134 hp) at 4,000 rpm Intercooled Turbo (3rd Generation DI-D with variable geometry turbo) With manual transmission Power - 131 kW (178 PS) at 4,000 rpm With automatic transmission Power - 131 kW (178 PS) at 4,000 rpm Mitsubishi Hilux 4D56 engine factory workshop and repair manual 1991 onwards Download |