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Home >> Cadillac >> 2005 >> STS 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical - 4.6L (LH2) (4 Of 6)) >> Off-Vehicle Repair Instructions - Part 2 >> Crankshaft and Bearings Cleaning and Inspection >> Visual Inspection

Visual Inspection

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    Fig 1: Inspecting Crankshaft
    GM1039112Courtesy of GENERAL MOTORS CORP.
  1. Perform the following visual inspections:
    • Inspect the crankshaft balancer bolt hole (1) for thread damage
    • Inspect the crankshaft balancer mounting area (2) for damage
    • Inspect the crankshaft sprocket pin hole (3) for damage
    • Inspect the crankshaft main journals (4) for damage
    • Inspect the crankshaft connecting rod journals (5) for damage
    • Inspect the crankshaft oil passages (6) for obstructions
    • Inspect the crankshaft main bearing thrust wall surfaces (7) for damage
    • Inspect the crankshaft reluctor ring teeth (8) for damage
    • Inspect the crankshaft counterweights (9) for damage
    • Inspect the crankshaft rear main oil seal surface (10) for damage
    • Inspect the crankshaft engine flywheel mounting surface (11) for damage
    • Inspect the crankshaft engine flywheel bolt holes (12) for thread damage
    • Inspect the crankshaft pilot hole (13) for damage
  2. Repair or replace the crankshaft as necessary.