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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Engine Mechanical - 4.6L (LH2) - 3 Of 5) >> Off-Vehicle Repair Instructions (Part 2) >> Piston and Connecting Rod Assemble - Off Vehicle >> Piston and Piston Pin Installation Procedure

Piston and Piston Pin Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Piston & Connecting Rod Locating Marks
    GM204765Courtesy of GENERAL MOTORS CORP.
  1. Properly orient the piston (1) on the connecting rod (2) as follows:
    • The locating mark (4) cast into the underside of the piston should point towards the front of the engine.
    • The locating notch (3) on the connecting rod cap should be pointing towards the rear of the engine on odd-numbered cylinders and towards the front of the engine on even-numbered cylinders.
  2. Lubricate the piston pin bores in the piston and connecting rod with GM prelube lubricant GM P/N 1052367 (Canadian P/N 992869) or equivalent.
    3. Fig 2: Exploded View Of Piston & Connecting Rod Assembly
    GM204785Courtesy of GENERAL MOTORS CORP.
  3. Align the piston pin bore with the connecting rod pin bore.
  4. Slide the piston pin (4) into the piston and the connecting rod (3).
    5. IMPORTANT: New piston pin retainers must be used. Never reuse the piston pin retainers.
  5. Install NEW piston pin retainers (1) using the EN-46745  .
  6. Ensure that the piston pin retainers are fully seated in their grooves.
  7. Repeat these procedures for the remaining pistons.
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