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Fig. 224: View Of Camshaft Position (CMP) Sensor & Bolt 1. Remove the hood. Refer to Hood Replacement . 2. Remove the radiator support. Refer to Radiator Support Replacement . 3. Remove the valve lifters from both cylinder heads. Refer to Valve Lifter Replacement. 4. Remove the camshaft sensor bolt and sensor. 5. Remove the engine front cover. Refer to Engine Front Cover Removal. 6. Rotate the engine until the timing marks are aligned.
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
7. Remove the camshaft sprocket bolts. 8. Remove the camshaft sprocket and reposition the timing chain. Fig. 225: View Of Camshaft Retainer Plate 9. Remove the camshaft retainer bolts and retainer. NOTE: Do not turn the crankshaft assembly after the timing chain has NOTE: All camshaft journals are the same diameter, so care must be
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 226: View Of Bolts installed In Camshaft Front Bolt Holes 10. Remove the camshaft. 1. Install three M8-1.25 x 100 mm (M8-1.25 x 4.0 in) bolts to the bolt holes in the front of the camshaft. 2. Using the bolts as a handle, carefully rotate and pull the camshaft out of the engine block. 3. Remove the three bolts from the camshaft. 11. Clean and inspect the camshaft and bearings. Refer to Camshaft and Bearings Cleaning used in removing or installing the camshaft to avoid damage to
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
and Inspection. Installation Procedure Fig. 227: View Of Bolts installed In Camshaft Front Bolt Holes 1. Lubricate the camshaft journals and the bearings with clean engine oil. 2. Install three M8-1.25 x 100 mm (M8-1.25 x 4.0 in) bolts to the bolt holes in the front of the camshaft. IMPORTANT: If camshaft replacement is required, the valve lifters must also be replaced.
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
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