Installation Procedure
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Important:
- Do not reuse the crankshaft oil seal or rear cover gasket.
- Do not apply any type of sealant to the rear cover gasket, unless specified.
- The special tool in this procedure is used to properly center the crankshaft rear oil seal.
- The crankshaft rear oil seal will be installed after the rear cover has been installed and aligned.
Install the rear cover without the crankshaft oil seal.
- All gasket surfaces should be free of oil or other foreign material during assembly.
- The crankshaft rear oil seal MUST be centered in relation to the crankshaft.
- An improperly aligned rear cover may cause premature rear oil seal wear and/or engine assembly oil leaks.
- Apply a 5 mm (0.20 in) bead of sealant GM P/N 12378190, or equivalent 20 mm (0.80 in) long to the oil pan to engine block junction.
- Install the rear cover gasket and cover.
- Install the rear cover bolts until snug. Do not overtighten.
- Install the oil pan-to-rear cover bolts (1) until snug. Do not overtighten.
- Rotate the crankshaft until two opposing flywheel bolt holes are parallel to the oil pan surface.
Important: The tapered legs of the alignment tool must enter the rear cover oil seal bore.
- Install the J 41476
and bolts onto the rear of the crankshaft.NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
- Tighten the J 41476
mounting bolts until snug. Do not overtighten.
Tighten
- 7.1. Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).
- 7.2. Tighten the engine rear cover bolts to 25 N.m (18 lb ft).
- Remove the J 41476 .
- Install a NEW crankshaft rear oil seal. Refer to CRANKSHAFT REAR OIL SEAL REPLACEMENT .
- Install the engine flywheel. Refer to Engine Flywheel Replacement .