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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical (Repair Instructions -- 2 Of 3) -- 4.8L, 5.3L & 6.0L) >> Repair Instructions (Off-Vehicle - Part 2) >> Piston and Connecting Rod Assemble >> Full-Floating Piston Pin

Full-Floating Piston Pin

WARNING: This page is about a different variant/trim than selected.
  1. Install the retaining clip. The clip should be seated in the groove of the pin bore.
    2. Fig 1: View Of Retaining Clip In Pin Bore Groove
    GM1366372Courtesy of GENERAL MOTORS CORP.
  2. Install the piston pin to the piston and connecting rod.
  3. Install the retaining clip. The clip should be seated in the groove of the pin bore.
    4. Fig 2: View Of Piston Pin, Piston, Clips & Connecting Rod
    GM35866Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: When installing piston rings, use a ring expander plier type tool. Do not roll the rings into the grooves of the piston. Use caution and care to expand the rings only slightly larger than the outside diameter (OD) of the piston.
  4. Identify the compression and oil control rings for proper installation. The upper compression ring can be identified by a paint mark (3) located 180 degrees from the end gap. The lower compression ring can be identified by a paint mark (3) located 90 degrees from the end gap. Both rings should be installed with the orientation marks (1, 2) facing the top of the piston.
    5. Fig 3: View Of Upper/Lower Compression Rings & Marks
    GM1336810Courtesy of GENERAL MOTORS CORP.
  5. Using piston ring pliers, install the piston rings onto the piston.
    6. Fig 4: Removing/Installing Piston Rings
    GM490763Courtesy of GENERAL MOTORS CORP.
  6. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  7. Position the compression ring end gaps 180 degrees opposite each other.
  8. Install the connecting rod bearings (3) to the rod (2) and cap (4).
    9. Fig 5: View Of Piston & Connecting Rod Components
    GM1366359Courtesy of GENERAL MOTORS CORP.
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