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Tools Required J 7872 Magnetic Base Dial Indicator Set J 8520 Camshaft Lobe Lift Indicator. See Special Tools . Cleaning & Inspection Fig. 56: Identifying Camshaft Inspection Areas 1. Clean the components in solvent. CAUTION: Refer to Safety Glasses and Compressed Air Caution .
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
2. Dry the components with compressed air. 3. Inspect the camshaft bearing journals (1) for scoring or excessive wear. 4. Inspect the camshaft valve lifter lobes (2) for scoring or excessive wear. 5. Inspect the threaded bolt hole (3) in the front of the camshaft for damaged threads or debris. 6. Inspect the camshaft sprocket pin (204) for damage. 7. Inspect the camshaft retainer plate for wear or a damaged sealing gasket. If the camshaft retainer plate sealing gasket is not cut or damaged, it may be used again. Fig. 57: Camshaft Bearings
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
8. Inspect the camshaft bearings for proper fit in the engine block. Camshaft bearings have an interference fit to the engine block and should not be loose in the engine block bearing 9. Inspect the camshaft bearings for excessive wear or scoring. Bearings with excessive scoring or wear must be replaced. Fig. 58: Measure Camshaft Journals With Micrometer 10. Using a micrometer, measure the camshaft journals for wear and out-of-round. If the camshaft bearing journals are greater than 0.025 mm (0.001 in) out-of-round, If the camshaft bearing journal diameter is less than 54.99 mm (2.164 in), replace the
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
camshaft. Fig. 59: Measuring Camshaft Lobes 11. Using a micrometer, measure the camshaft lobes for wear. Refer to Engine Mechanical Specifications (RPO LY5 VIN J) or Engine Mechanical Specifications (RPO LC9
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
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