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Home >> GMC >> 2021 >> Yukon XL AT4 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions ( 2 Of 12) >> Repair Instructions >> Piston and Connecting Rod Overhaul >> Disassemble Procedure

Disassemble Procedure

  1. GM5366783Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    You must use a piston ring expander to remove and install the piston rings. Only expand the rings far enough to fit over the piston lands. If the rings are overexpanded, the top ring will shatter and the others will distort.

    Remove the piston rings (1, 2, 3, and 4) using a piston ring expander. Place each ring in a clean shop towel for storage.

  2. GM5580166Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The connecting rod is non-directional and may be assembled/reassembled to the piston in either direction.
    • DO NOT reuse the piston pin retainers.

    Using the EN-46745  Piston Pin Clip Remover/Installer (5), remove the piston pin retainers (1) by using the removal access notch in the side of the piston (3). Discard the 2 piston pin retainers (1).

  3. Slide the piston pin (2) out of the piston (3). The piston will disconnect from the connecting rod (4).
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