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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Valve Rocker Arm, Shaft, and Push Rod Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the lower valve rocker arm covers. Refer to Valve Rocker Arm Cover Replacement - Lower Left  or Valve Rocker Arm Cover Replacement - Lower Right .
  2. Loosen the valve clearance lock nuts on each rocker arm.
  3. Loosen the valve clearance adjusting screw on each rocker arm to relieve tension on the valvetrain.
    Fig 1: View Of Valve Clearance Adjusting Screw
    GM660481Courtesy of GENERAL MOTORS CORP.
    4. IMPORTANT: The valve rocker arm bolts retain the rocker arms on the shaft. Do not remove the bolts from the rocker arm shaft brackets.
  4. Loosen the rocker arm shaft bolts in the proper sequence. Leave the bolts in the rocker arm shaft brackets.
    5. Fig 2: Rocker Arm Shaft Bolts Loosening Sequence
    GM660486Courtesy of GENERAL MOTORS CORP.
  5. Remove the rocker arm shaft.
    6. Fig 3: View Of Rocker Arm Shaft
    GM663833Courtesy of GENERAL MOTORS CORP.
  6. Remove the valve spring caps.
  7. Remove the valve lifter bridges.
  8. Remove the pushrods.
    9. Fig 4: View Of Pushrods, Valve Spring Caps & Valve Lifter Bridges
    GM660488Courtesy of GENERAL MOTORS CORP.
  9. Clean all parts in a suitable cleaning solvent.
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