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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 721 (Engine Mechanical - 8.1L (On-Vehicle)) >> Repair Instructions >> Valve Rocker Arm and Push Rod Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Be sure to keep parts in order. Parts must be put back from where they were removed.
    Fig 1: View Of Valve Rocker Arm Studs & Pushrod Guides
    GM470906Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  1. Apply sealant GM U.S. P/N 12346004, Canada P/N 10953480, or equivalent to the valve rocker arm stud-to-cylinder head threads.
  2. Install the pushrod guides and valve rocker arm studs.

    Tighten:  Tighten the valve rocker arm studs to 50 N.m (37 lb ft).

    3. Fig 2: View Of Intake & Exhaust Valve Pushrods
    GM470903Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The exhaust valve pushrods (2) are longer than the intake valve pushrods (1).
  3. Install the valve pushrods.
    4. Fig 3: View Of Valve Rocker Arms
    GM470899Courtesy of GENERAL MOTORS CORP.
  4. Coat the valve rocker arm and valve rocker arm ball bearing surfaces with lubricant GM U.S P/N 12345501, Canada P/N 992704, or equivalent.
  5. Install the valve rocker arms, the valve rocker arm balls, and the valve rocker arm nuts.

    Tighten:  Tighten the valve rocker arm nuts slowly to 25 N.m (18 lb ft) while guiding the tips of the rocker arms over the tips of the valves.

  6. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left  or Valve Rocker Arm Cover Replacement - Right .
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