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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (4 Of 4) >> Off-Vehicle Repair Instructions (Part 3) >> Piston, Connecting Rod, and Bearing Installation >> Piston, Pin, and Connecting Rod Installation

Piston, Pin, and Connecting Rod Installation

  1. Lightly lubricate the following components with clean engine oil:
    • Piston (107)
    • Piston rings
    • Cylinder bore
    • Bearings (104) and bearing surfaces
      • Fig 1: Identifying Piston & Connecting Rod Components
      GM1522258Courtesy of GENERAL MOTORS CORP.
  2. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  3. Position the compression ring end gaps 180 degrees opposite each other.
  4. Install the J 41556  to the connecting rod. See Special Tools .
    Fig 2: View Of J 41556 & Connecting Rod
    GM1366358Courtesy of GENERAL MOTORS CORP.
  5. Install the J 8037  onto the piston and compress the piston rings.
    6. IMPORTANT: The piston alignment mark MUST face the front of the engine block.
    Fig 3: Using J 8037 To Install Piston & Connecting Rod Assembly
    GM63217Courtesy of GENERAL MOTORS CORP.
  6. Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all the piston rings have entered the cylinder bore.
  7. Use the J 41556  to guide the connecting rod onto the crankshaft journal. See Special Tools .
    Fig 4: View Of J 41556 & Connecting Rod
    GM63186Courtesy of GENERAL MOTORS CORP.
  8. Remove the J 41556  from the connecting rod. See Special Tools .
    9. NOTE: Refer to Fastener Notice .
    IMPORTANT: The connecting rod and cap must be assembled with the mating surfaces properly aligned.
    Fig 5: View Of Piston, Connecting Rod, Bearing Cap, Bearing Halves & Bolts
    GM53223Courtesy of GENERAL MOTORS CORP.
  9. Install the bearing cap, bearing half, and bolts.

    Tighten: 

    1. Tighten the bolts first pass to 20 N.m (15 lb ft).
    2. Tighten the bolts final pass to 75 degrees using the J 45059  .

  10. Measure the connecting rods for the proper side clearance. Refer to Engine Mechanical Specifications (LR4 VIN V) , Engine Mechanical Specifications (LM7 VIN T) , Engine Mechanical Specifications (L33 VIN B) , Engine Mechanical Specifications (L59 VIN Z) , Engine Mechanical Specifications (LQ4 VIN U) or Engine Mechanical Specifications (LQ9 VIN N) .
    Fig 6: Measuring Connecting Rod Side Clearance
    GM1366378Courtesy of GENERAL MOTORS CORP.
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