Lower Crankcase Removal

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Lower Crankcase Perimeter Bolts - Left Side

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Remove the 4 lower crankcase perimeter bolts along the left side of the engine.

Fig 2: Identifying Lower Crankcase Perimeter Bolts - Right Side

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Remove the 4 lower crankcase perimeter bolts along the right side of the engine.

Fig 3: Identifying Oil Manifold Plate Bolts

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Remove the oil manifold plate bolts.

Fig 4: Locating Single Stud-End Bolt

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Remove the main bearing bolts. Note the location of the single stud-end bolt (1) used to attach the oil pump pickup tube.

Fig 5: Identifying Oil Manifold Plate

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Remove the oil manifold plate.

Fig 6: Separating Crankcase Halves

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NOTE: Use a plastic pry tool when prying case halves apart to prevent damage to the Upper and Lower Crankcase surface. Do not continue to push the pry tool in the crankcase as the Upper and Lower Crankcase halves separate. This may damage the sealing surface.

Working on either side of the lower crankcase, separate the crankcase halves by alternately prying in the grooves (1) provided until the lower crankcase is free of the dowel pins.

Fig 7: View of lower Crankcase

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Remove the lower crankcase.

Fig 8: View of Upper-to-lower Crankcase Seals

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Remove and discard the upper-to-lower crankcase seals.