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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1400 (Engine Mechanical - 3.1L V6 - VIN (J)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Rocker Arm and Push Rods Cleaning and Inspection

Valve Rocker Arm and Push Rods Cleaning and Inspection

WARNING: This page is about a different car, the 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to Cleaning Solvent Caution in Cautions and Notices.
  1. Clean the valve rocker arms and push rods in cleaning solvent.
    CAUTION: Refer to Safety Glasses and Compressed Air Caution in Cautions and Notices.
  2. Dry the valve rocker arms and push rods with compressed air.
  3. Inspect the valve rocker arms for the following conditions:
    • Excessive wear at the valve contact or push rod socket area (1)
    • A loose or damaged pin (2)
    • A worn or damaged roller bearing (2)

      The roller should rotate freely with no binding or roughness.

    • The bolt threads for damage
      Fig 1: Identifying Types Of Wear & Damage Valve Rocker Arm
      G01968116Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Keep the push rods in order. The intake and exhaust are different lengths.
  4. Inspect the push rods for the following conditions:
    • Straightness using a straight edge (1)
    • Excessive wear on the push rod ends (3)
    • Clogging of the oil passage (2)
      Fig 2: View Of Inspection Areas On Push Rod
      G01968117Courtesy of GENERAL MOTORS CORP.
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