Chevrolet Silverado / GMC Sierra. Manual — part 580
Fig. 9: View Of Piston Rings & Piston Expander
Courtesy of GENERAL MOTORS CORP.
4. Apply engine oil to the piston ring grooves.
5. Install the piston rings using a piston ring expander.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 10: Aligning Piston Ring End Gaps
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: The 2N mark on the 2nd compression ring must face
upwards. The piston has a groove between the 1st and the
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
6. Orientate the piston ring end gaps as illustrated.
CYLINDER HEAD DISASSEMBLE
Tools Required
J 8062 Valve Spring Compressor
J 38820 Valve Stem Oil Seal Remover. See Special Tools .
Disassemble
2nd compression rings to allow for expansion of blowby
gases. No ring is to be installed in this groove.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 11: Compressing Valve Spring Using J 8062
Courtesy of GENERAL MOTORS CORP.
1. Use the J 8062 to compress the valve spring.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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