1.12 PUMP DRIVE GEARBOX

TM-5-3895-373-34 Paving Machine Bituminous Material Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-373-34 h. Fuel Injectors: The fuel injectors are located on the top left side of the engine, mounted on the cylinder head with vertical fuel injection lines. The fuel injectors are configured with a four-hole injector nozzle for maximum fuel flow. i. Fuel Filter: The fuel filter is located on the left side of the engine, mounted on the cylinder head in line between the fuel injection pump and the fuel tank. The cartridge type filter element removes particles from the fuel system. j. Flywheel: The flywheel is located on the back of the engine. The flywheel is held in place on the crankshaft with six bolts with washers. The flywheel transmits power from the crankshaft to an attached pump drive gearbox through the drive plate. k. Oil Sump: The oil sump is located on the bottom of the engine block. Engine oil is circulated by a gear-type oil pump driven from the rear of the front- mounted balancer unit, located inside the oil sump. The oil sump drain is connected to a hose for remote draining. l. Fuel Injection Pump: The fuel injection pump is located on the left side of the engine, mounted on the back of the engine timing housing. The pump is a mechanical governor type, configured with a D.P.A. distributor. The fuel injection pump is connected to the engine camshaft by a gear. The fuel injection pump sends fuel into the engine cylinders for combustion. The engine cold-starting induction heater is also fed by the fuel injection pump, through the fuel filter. Fuel input is adjusted by a transfer pressure screw on the injection pump. 1.12 PUMP DRIVE GEARBOX. The pump drive gearbox links the engine to the two hydraulic propulsion pumps. A drive plate and drive shaft connect the engine flywheel to the gearbox. An adapter gear sleeve links the gearbox to each hydraulic propulsion pump. The pump drive gearbox has a 1:1 ratio and is lubricated by gear oil. Two horizontal output gears are driven by one central input gear inside the gearbox housing. An oil drain hose and plug are attached to the bottom of the gearbox housing. 1-5

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