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Home >> GMC >> 2016 >> Terrain SL, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine Mechanical - 3.6L (LFX) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Crankshaft and Bearing Cleaning and Inspection >> Visual Inspection

Visual Inspection

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Crankshaft Inspection Areas
    GM1866878Courtesy of GENERAL MOTORS COMPANY
  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 keyway (3) for damage.
    • Inspect the oil pump drive flats (4) for damage.
    • Inspect the crankshaft main journals (5) for damage.
    • Inspect the crankshaft connecting rod journals (6) for damage.
    • Inspect the crankshaft oil passages (7) for obstructions.
    • Inspect the crankshaft main bearing thrust wall surfaces (8) for damage.
    • Inspect the crankshaft counterweights (9) for damage.
    • Inspect the crankshaft reluctor ring teeth (10) for damage.
    • Inspect the crankshaft rear main oil seal surface (11) for damage.
    • Inspect the crankshaft engine flywheel mounting surface (12) for damage.
    • Inspect the crankshaft pilot hole (13) for damage.
    • Inspect the crankshaft engine flywheel bolt holes (14) for thread damage.
  2. Repair or replace the crankshaft as necessary.