L2501 ENGINE – FUEL SYSTEM

Injection Timing 1. Remove the stop solenoid. 2. Remove the fuel tank, injection pipes and glow plugs. 3. Set the speed control lever to maximum fuel discharge position. (Reference) • Turn the flywheel with screwdriver. 4. Turn the flywheel counterclockwise (facing the flywheel) until the fuel fills up to the hole of the delivery valve… Continue reading L2501 ENGINE – FUEL SYSTEM

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L2501 ENGINE – COOLING SYSTEM

Fan Belt Tension 1. Measure the deflection (A), depressing the belt halfway between the fan drive pulley and alternator pulley at specified force 98 N (10 kgf, 22 lbf). 2. If the measurement is not within the factory specifications, loosen the alternator mounting screws and relocate the alternator to adjust. Fan Belt Damage and Wear… Continue reading L2501 ENGINE – COOLING SYSTEM

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L2501 ENGINE – LUBRICATING SYSTEM

Engine Oil Pressure 1. Remove the engine oil pressure switch, and set an oil pressure tester (Code No. 07916-32032). (Adaptor screw size: PT 1/8). 2. Start the engine. After warming up, measure the oil pressure of both idling and rated speeds. 3. If the oil pressure is less than the allowable limit, check the following.… Continue reading L2501 ENGINE – LUBRICATING SYSTEM

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L2501 ENGINE CHECKING AND ADJUSTING – CHECKING ENGINE BODY

Compression Pressure 1. Run the engine until it is warmed up. 2. Stop the engine and disconnect the 2P connector from the stop solenoid in order to inject fuel. 3. Remove the fuel tank and all injection nozzles. 4. Set a compression tester (Code No. 07909-30208) with the adaptor to the nozzle hole (Nozzle hole… Continue reading L2501 ENGINE CHECKING AND ADJUSTING – CHECKING ENGINE BODY

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L2501 Engine – COOLING SYSTEM

(1) Thermostat (2) Cylinder Head Water Jacket (3) Cylinder Block Water Jacket (4) Radiator (5) Cooling Fan (6) Water Pump The cooling system consists of a radiator (4), a centrifugal water pump (6), a cooling fan (5) and a thermostat (1). The water is cooled as it flows through the radiator core, and the cooling… Continue reading L2501 Engine – COOLING SYSTEM

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L2501 Engine – INJECTION NOZZLE

Exhaust and noise regulations are becoming increasingly strict, particularly in regard to the reduction of NOx (nitrogen oxides) and particulates. The two-spring nozzle holder has been developed to reduce NOx (nitrogen oxides) and particulates from direct injection diesel engine exhaust. Features The two-spring nozzle holder limits needle valve lift at initial valve opening to throttle… Continue reading L2501 Engine – INJECTION NOZZLE

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L2501 Engine – GOVERNOR

The governor serves to keep engine speed constant by automatically adjusting the amount of fuel supplied to the engine according to changes in the load. This engine employs an all-speed governor which controls the centrifugal force of the steel ball (1) weight, produced by rotation of the fuel camshaft (5), and the tension of the… Continue reading L2501 Engine – GOVERNOR

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L2501 Engine – ENGINE BODY

PISTON Piston’s skirt is coated with molybdenum disulfide, which reduces the piston slap noise and thus the entire operating noise. Molybdenum disulfide (MoS2) The molybdenum disulfide (1) serves as a solid lubricant, like a Graphite or Teflon. This material helps resist metal wears even with little lube oil. (1) Molybdenum Disulfide HALF-FLOATING HEAD COVER The… Continue reading L2501 Engine – ENGINE BODY

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