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Content .. 1897 1898 1899 1900 ..
kPa (55 psi), the oil pressure relief valve exhausts excess oil to the sump. Oil is then directed from the filter to the upper main oil galleries and the valve lifter oil manifold With active fuel management activated, the engine control module (ECM) commands the 4 LUBRICATION DESCRIPTION - MAIN PRESSURE ABOVE 55 PSI WITH CYLINDER
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 58: Lubrication Schematic Above 55 psi (RPO L76) Engine lubrication is supplied by a gerotor type oil pump assembly. The oil pump is mounted on Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter Oil is then directed from the filter to the upper main oil galleries and the valve lifter oil manifold An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is With active fuel management activated, the ECM commands the 4 solenoids to open, directing oil CLEANLINESS AND CARE
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Throughout this section, it should be understood that proper cleaning and protection of When any internal engine parts are serviced, care and cleanliness is important. When components are removed for service, they should be marked, organized or retained in At the time of installation, components should be installed in the same location and with the An automobile engine is a combination of many machined, honed, polished and lapped A liberal coating of clean engine oil should be applied to friction areas during assembly. Proper lubrication will protect and lubricate friction surfaces during initial operation. SEPARATING PARTS Separate, mark, or organize the following components: Piston and the piston pin Piston to the specific cylinder bore Piston rings to the piston Connecting rod location and orientation to the crankshaft journal Connecting rod to the bearing cap A paint stick or etching/engraving type tool are recommended. Stamping the connecting rod Crankshaft main and connecting rod bearings Camshaft and valve lifters Valve lifters, lifter guides, pushrods and rocker arm assemblies Valve to the valve guide IMPORTANT: Many internal engine components will develop specific wear When disassembling the engine, internal components MUST
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Valve spring to the cylinder head location Engine block main bearing cap location and direction Oil pump drive and driven gears REPLACING ENGINE GASKETS Tools Required J 28410 Gasket Remover Gasket Use and Applying Sealants Do not use any gasket again unless specified. Gaskets that can be used again will be identified in the service procedure. Do not apply sealant to any gasket or sealing surface unless called out in the service Separating Components Use a rubber mallet to separate components. Bump the part sideways to loosen the components. Bumping should be done at bends or reinforced areas to prevent distortion of parts. Cleaning Gasket Surfaces Remove all gasket and sealing material from the part using the J 28410 or equivalent. Care must be used to avoid gouging or scraping the sealing surfaces. Do not use any other method or technique to remove sealant or gasket material from a part. Do not use abrasive pads, sand paper, or power tools to clean the gasket surfaces. These methods of cleaning can cause damage to the component sealing surfaces. Abrasive pads also produce a fine grit that the oil filter cannot remove from the oil. This grit is abrasive and has been known to cause internal engine damage. Assembling Components When assembling components, use only the sealant specified or equivalent in the service NOTE: Refer to Sealant Notice .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Content .. 1897 1898 1899 1900 ..
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