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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Engine Mechanical - 3.8L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Replacing Crankshaft Rear Oil Seal & Housing >> Removal

Replacing Crankshaft Rear Oil Seal & Housing: Removal

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Drain the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) or Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) in Engine Cooling.
  3. Drain the engine oil. Refer to Replacing Engine Oil and Oil Filter .
  4. Remove the engine flywheel. Refer to Replacing Engine Flywheel .
  5. Remove the oil pan. Refer to Replacing Oil Pan .
    6. Fig 1: Crankshaft Rear Oil Seal Housing
    GM406047Courtesy of GENERAL MOTORS CORP.
  6. Remove the crankshaft rear oil seal housing bolts.
  7. Remove the crankshaft rear oil seal housing.
  8. Remove the crankshaft rear oil seal.
    9. IMPORTANT: Ensure not to damage the crankshaft outside diameter surface with any tool.
  9. Remove the gasket from the crankshaft rear oil seal housing and the cylinder block.
  10. Inspect the inside diameter of the bore. Correct or replace the crankshaft rear oil seal housing if necessary.
  11. Inspect the crankshaft for nicks of burrs on the surface that contacts the seal.
  12. Repair or replace the crankshaft if necessary.
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