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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 906 (Engine Mechanical - 4.3L (LU3)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Cylinder Head Disassemble

Cylinder Head Disassemble

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required 

J 8062  Valve Spring Compressor

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.
CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  1. Use the J 8062  in order to compress the valve springs.
    Fig 1: Using J 8062
    G01977879Courtesy of GENERAL MOTORS CORP.

    Important  : Mark, sort, and organize the components so that the components can be reinstalled in their original location and position.

  2. Remove the valve stem keys (1).
  3. Remove the J 8062  from the cylinder head.
  4. Remove the valve spring cap (2).
  5. Remove the valve spring (3).
  6. Remove the valve stem oil seal (4).
  7. Discard the valve stem oil seal.
  8. Remove the valve.
    Fig 2: Identifying Valve Stem Keys, Spring Cap, Spring, & Valve Stem Oil Seal
    G01977880Courtesy of GENERAL MOTORS CORP.
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