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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1680 (Engine Mechanical - 6.6L (LMM) - Repair Instructions - Off Vehicle (1 Of 3)) >> Valve Rocker Arm, Shaft, and Push Rod Removal

Valve Rocker Arm, Shaft, and Push Rod Removal

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Valve Clearance Adjusting Screw
    GM660481Courtesy of GENERAL MOTORS CORP.
  1. Loosen the valve clearance lock nuts on each rocker arm.
  2. Loosen the valve clearance adjusting screw on each rocker arm to relieve tension on the valve train.
    3. Fig 2: Rocker Arm Shaft Bolts Loosening Sequence
    GM660486Courtesy of GENERAL MOTORS CORP.
  3. Remove the rocker arm shaft assembly bolts in the proper sequence.
  4. Remove the rocker arm shaft assembly from the cylinder head.
    5. Fig 3: View Of Pushrods, Valve Spring Caps & Valve Lifter Bridges
    GM660488Courtesy of GENERAL MOTORS CORP.
  5. Remove the valve bridge pins.
  6. Remove the valve bridges.
  7. Remove the pushrods.
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