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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Mechanical - 5.3L (L83) Or 6.2L (L86) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Valve Stem Oil Seal And Valve Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the valve rocker arms as needed. Refer to Valve Rocker Arm and Push Rod Replacement .
  2. Remove the spark plugs as needed. Refer to Spark Plug Replacement .
    3. Fig 1: Compressed Air Adapter Hose
    GM476770Courtesy of GENERAL MOTORS COMPANY
  3. Install the J - 22794  adapter into the spark plug hole.
  4. Connect a shop air supply hose and apply compressed air in order to hold the valves in place.
    5. Fig 2: Compressing Valve Spring (Cylinder Head Installed) Using Special Tools
    GM218211Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Completely engage the J 38606 jaws on the valve spring. The J 38606 may slip off and scratch the valve spring. Replace the valve spring if the valve spring becomes scratched.

  5. Use J 38606  compressor.
  6. Apply steady pressure on the valve spring cap until the valve keys are accessible.
    7. Fig 3: Identifying Valve Components
    GM480555Courtesy of GENERAL MOTORS COMPANY
  7. Remove the valve keys (1).
  8. Carefully release the valve spring tension.
  9. Remove the J-38606  compressor.
  10. Remove the valve spring cap (2) and valve spring (3).
  11. Remove the valve stem oil seal (4).
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