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SPECIAL TOOLS AND EQUIPMENT

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SPECIAL TOOLS Special Tools Illustration Tool Number/Description EN 44217-45 Timing Chain Retention Tool EN 45680-400 Cylinder Sleeve Removal and Installation Kit EN 46547 Flywheel Holding Tool EN 47701 Piston Ring Compressor EN 47702 Bolt Extractor Kit J 7872 Magnetic Base Indicator Set J 8001 Dial Indicator Set J 8062 Valve Spring Compressor (Head-Off) J 8087 […]

USE OF ROOM TEMPERATURE VULCANIZING (RTV) AND ANAEROBIC SEALER Sealant Types

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IMPORTANT: The correct sealant and amount of sealant must be used in the proper location to prevent oil leaks, coolant leaks, or the loosening of the fasteners. DO NOT interchange the sealants. Use only the sealant (or equivalent) as specified in the service procedure. The following 2 major types of sealant are commonly used in […]

SEPARATING PARTS

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The components of an internal combustion engine develop wear patterns with their mating components. During disassembly of the engine, parts should be separated and kept in order so they may be reinstalled in the same location from which they were removed. REPLACING ENGINE GASKETS 1. Do not reuse any gasket unless otherwise specified. Reusable gaskets […]

CLEANLINESS AND CARE

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An automobile engine is a combination of many of the following surfaces: • Machined • Honed • Polished • Lapped The tolerances of these surfaces are measured in the ten-thousandths of an inch. When you service any internal engine part, cleanliness and care are important. Apply a liberal coating of engine oil to the friction […]

NEW PRODUCT INFORMATION

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The purpose of New Product Information is to highlight or indicate important new features for the service community. Changes may include one or more of the following items: • Torque values and/or fastener tightening strategies • Engine specifications • New sealants and/or adhesives • Disassembly and assembly procedure revisions • Engine mechanical diagnostic procedure revisions […]

EXHAUST CAMSHAFT POSITION ACTUATOR DESCRIPTION

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The camshaft position actuator is bolted to the front of the exhaust camshaft and is integral with the sprocket. The actuator and sprocket can only be replaced as one unit. The total range of actuator rotation is 0 to 25 camshaft degrees. At idle, the exhaust camshaft position actuator is at full advance or 0 […]

DRIVE BELT SYSTEM DESCRIPTION

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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 о The power steering pump, if belt driven о The generator о The A/C […]

DESCRIPTION AND OPERATION

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CRANKCASE VENTILATION SYSTEM DESCRIPTION Fig. 663: View Of Crankcase Ventilation System Courtesy of GENERAL MOTORS CORP. A crankcase ventilation system is used to consume crankcase vapors created during the combustion process instead of venting them to the atmosphere. Fresh air is supplied through a filter to the crankcase, the crankcase mixes the fresh air with […]

CRANKSHAFT REAR OIL SEAL INSTALLATION Tools Required

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J 44215 Rear Seal Installer. See Special Tools. Fig. 658: Installing Crankshaft Rear Oil Seal Courtesy of GENERAL MOTORS CORP. 1. Use the plastic installation sleeve supplied with the new seal when installing a new seal. Use J 44215 to install the crankshaft rear oil seal. See Special Tools. 2. Remove J 44215 . See […]

DRIVE BELT IDLER PULLEY INSTALLATION

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Fig. 657: Drive Belt Idler Pulley Courtesy of GENERAL MOTORS CORP. 1. Install the drive belt idler pulley. NOTE: Refer to Fastener Notice in Cautions and Notices. 2. Install the drive belt idler pulley bolts. Tighten: Tighten the drive belt idler pulley bolts to 50 N. m (37 lb ft).