OEM 2008 Buick Lucerne Crankshaft Seal

2008 Buick Lucerne Parts Questions & Experts Answers

• Q: How to replace the rear crankshaft seal and housing on 2008 Buick Lucerne?

  A: The first step to replace the Crankshaft rear oil seal and housing is to drain the cooling system. Engine Flywheel removal alongside the Oil Pan follows next while maintaining cautious handling of the Crankshaft outside diameter surface. First remove all bolts from the Crankshaft rear oil seal housing before removing the complete housing alongside its gasket. Put the housing with the face down onto a clean support surface made of wood blocks while you drive an appropriate tool around its outer seal area with a hammer to extract it. Check the Crankshaft for nicks and burrs then decide on needed repair or replacement. Check the Crankshaft sealing surface using a lint-free towel before inspecting for burrs or sharp edges which can be removed by crocus cloth. The Crankshaft rear oil seal housing should be cleaned from all foreign material before you set it face-up on a clean surface. The new rear oil seal will be installed onto (EN-47623) by gently twisting it until full seat engagement. The mechanic positions (EN-47623) and (J 8092) on top of the housing before using constant downward pressure to properly seat the seal. After cleaning the Crankshaft sealing surface once again check for burrs and sharp edges before completing the setup. Position the new Crankshaft rear oil seal housing gasket on the engine while maintaining correct alignment for the oil passage openings before placing the housing in position. Use a strong wrench to tighten the housing bolts lightly before using a straight edge tool to measure the step height with a feeler gauge for proper adjustments. Use (J 45059) tools to fasten the bolts at 15 n.m torque and an extra 50 degrees, then double-check the step height. The measurement of the step height must be repeated after the housing reinstallation because replacement becomes necessary if the measurement remains excessive. After completing installation of the Oil Pan alongside the engine Flywheel you must refill the cooling system.