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Fig. 730: Identifying Engine Preluber J 45299 5. Install the flexible hose to the adapter and open the valve. 6. Pump the handle on the J 45299 in order to flow a minimum of 1-1. See Special Tools.9
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
liters (1-2 quarts) engine oil. Observe the flow of engine oil through the flexible hose and 7. Close the valve and remove the flexible hose and adapter from the engine. 8. Install the gallery plug to the engine. Tighten: Tighten the oil gallery plug to 60 N.m (44 lb ft). 9. Top-off the engine oil to the proper level. DESCRIPTION AND OPERATION CRANKCASE VENTILATION SYSTEM DESCRIPTION General Description A crankcase ventilation system is used to consume crankcase vapors in the combustion process Operation The primary control is through the positive crankcase ventilation (PCV) orifice which meters the Results of Incorrect Operation A plugged orifice may cause the following conditions: Rough idle Stalling or slow idle speed Oil leaks Sludge in engine A leaking orifice may cause the following conditions: Rough idle Stalling
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
High idle speed DRIVE BELT SYSTEM DESCRIPTION The drive belt system consists of the following components: The drive belt The drive belt tensioner The drive belt idler pulley The crankshaft balancer pulley The accessory drive component mounting brackets The accessory drive components The power steering pump, if belt driven The generator The A/C compressor, if equipped The engine cooling fan, if belt driven The water pump, if belt driven The vacuum pump, if equipped The air compressor, if equipped The drive belt system may use 1 belt or 2 belts. The drive belt is thin so that it can bend Both sides of the drive belt may be used to drive the different accessory drive components. When The drive belt is pulled by the crankshaft balancer pulley across the accessory drive component The drive belt system may have an idler pulley, which is used to add wrap to the adjacent pulleys. ENGINE COMPONENT DESCRIPTION
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Balance Shaft The cast iron balance shaft is mounted in the crankcase above and in-line with the camshaft. A Camshaft The steel camshaft is supported by four bearings pressed into the engine block. The camshaft Crankshaft The cast nodular iron crankshaft is supported by four crankshaft bearings. The number four Cylinder Heads The cast iron cylinder heads have one intake and one exhaust valve for each cylinder. A spark Engine Block The cast iron engine block has six cylinders arranged in a V shape with three cylinders in each Exhaust Manifolds The cast iron exhaust manifolds direct exhaust gases from the combustion chambers to the exhaust Intake Manifold
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
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