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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 994 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Rocker Arm, Shaft, and Push Rod Installation

Valve Rocker Arm, Shaft, and Push Rod Installation

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.
    IMPORTANT: Install the valve bridge with the expansion side of bridge away from the injector.
  1. Install the valve bridge.
  2. Fig 1: View Of Valve Bridge
    GM1342411Courtesy of GENERAL MOTORS CORP.
  3. Install the valve bridge pins.
  4. Install the pushrods.
  5. Fig 2: View Of Pushrods, Valve Spring Caps & Valve Lifter Bridges
    GM660488Courtesy of GENERAL MOTORS CORP.
    NOTE: The pushrods must be correctly seated in the valve lifter and valve rocker arms before the rocker arm shaft assembly is torqued into place. Improper seating of the pushrods can cause damage to the pushrods or the valve rocker arm shaft assembly components.
  6. Install the rocker arm shaft assembly.
  7. Fig 3: View Of Rocker Arm Shaft Assembly
    GM663833Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  8. Install the rocker arm shaft assembly bolts.

    Tighten:  Tighten the rocker arm shaft assembly bolts in the proper sequence. Tighten the rocker arm shaft bolts to 41 N.m (30 lb ft).

  9. Fig 4: Rocker Arm Shaft Bolts Tightening Sequence
    GM721463Courtesy of GENERAL MOTORS CORP.