Cylinder Head Disassemble

Tools Required

• J 8062  Valve Spring Compressor - Head Off. See Special Tools .
• J 38821  Valve Spring Compressor Adapter. See Special Tools .
• J 38820  Valve Stem Seal Installer. See Special Tools .
• J-43059-A  Valve Retainer Remover/Installer. See Special Tools .

Fig 1: Tapping on Valve Spring Retainer
Courtesy of GENERAL MOTORS CORP.
1. Using an appropriately sized deep socket and a plastic hammer, lightly tap on the valve spring retainer in order to loosen the valve keepers.
Fig 2: View of J 8062 & J 38821
Courtesy of GENERAL MOTORS CORP.
CAUTION: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
NOTE: Do not compress the valve springs less than 24.0 mm (0.943 in). Contact between the valve spring retainer and the valve stem oil seal can cause potential valve stem oil seal damage.
2. Compress the valve spring with the J 8062  and the J 38821  . See Special Tools .
Fig 3: Removing Valve Keepers
Courtesy of GENERAL MOTORS CORP.
3. Use the magnet end of the J-43059-A  in order to remove the valve keepers. See Special Tools .
4. Remove the J 8062  and the J 38821  . See Special Tools .
Fig 4: Removing Valve Spring
Courtesy of GENERAL MOTORS CORP.
5. Remove the valve spring.
Fig 5: Using J 38820 To Replace Valve Seal
Courtesy of GENERAL MOTORS CORP.
6. Remove the valve seal with the J 38820  . See Special Tools . Discard the valve seal, NEVER re-use the valve seal.
7. Remove the valve.
8. Repeat the procedure for the remaining valves.
Fig 6: Locating Left Cylinder Head Expansion Coolant Plugs
Courtesy of GENERAL MOTORS CORP.
9. Remove the expansion coolant plugs from the left cylinder head.
Fig 7: Locating Left Cylinder Head Threaded Coolant Plugs
Courtesy of GENERAL MOTORS CORP.
10. Remove the threaded coolant plugs from the left cylinder head.
Fig 8: Locating Right Cylinder Head Expansion Coolant Plugs
Courtesy of GENERAL MOTORS CORP.
11. Remove the expansion coolant plugs from the right cylinder head.
Fig 9: View Of Right Cylinder Head Threaded Coolant Plugs
Courtesy of GENERAL MOTORS CORP.
12. Remove the threaded coolant plugs from the right cylinder head.
Fig 10: Locating Right Cylinder Head Exhaust Manifold Studs
Courtesy of GENERAL MOTORS CORP.
13. Remove the exhaust manifold studs from the right cylinder head.