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Home >> Cadillac >> 2010 >> STS 3.6 V, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Mechanical - 4.6L (LH2) - Repair Instructions - Off Vehicle - 2 Of 3) >> Oil Pump Cleaning and Inspection >> Inspection Procedure

Inspection Procedure

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    Fig 1: Pump Body
    GM1039930Courtesy of GENERAL MOTORS CORP.
    NOTE: The internal parts of the oil pump are not serviced separately. If wear or damage is noted, replace the entire pump assembly.
  1. Inspect the oil pump body for cracks, scoring, casting imperfections and damaged threads.
  2. Fig 2: Oil Pump Cover
    GM1039979Courtesy of GENERAL MOTORS CORP.
  3. Inspect the oil pump cover for cracks, scoring and casting imperfections.
  4. Fig 3: Oil Pump Driven Gear
    GM1040034Courtesy of GENERAL MOTORS CORP.
  5. Inspect the oil pump driven gear for chipping, galling or wear.
  6. Fig 4: Oil Pump Drive Gear
    GM1040076Courtesy of GENERAL MOTORS CORP.
  7. Inspect the oil pump drive gear for chipping, galling or wear.
  8. Fig 5: Oil Pump Drive Spacer
    GM1040161Courtesy of GENERAL MOTORS CORP.
  9. Inspect the oil pump drive spacer for chipping, galling or wear.
  10. Fig 6: Oil Pump Relief Components
    GM1040213Courtesy of GENERAL MOTORS CORP.
  11. Inspect the oil pump relief components for embedded particles and/or damage.