Cylinder Head Disassemble

Tools Required

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

Fig 1: Loosening Valve Keepers
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: Compressing Valve Spring
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  (2) and the J 38821  (1). See Special Tools .
Fig 3: Removing Valve Keepers
Courtesy of GENERAL MOTORS CORP.
3. Use the magnetic end of the J 43059  in order to remove the valve keepers. See Special Tools .
4. Remove the J 8062  and the J 38821  . See Special Tools .
Fig 4: View Of Valve Spring
Courtesy of GENERAL MOTORS CORP.
5. Remove the valve spring.
Fig 5: Removing/Installing 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.