Nissan 12310-0W001 FLYWHEEL Assembly

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Raise the vehicle and support it securely on jackstands, then remove the transmission. If the vehicle is equipped with a manual transmission, remove the pressure plate and clutch disc. Now is a good time to check/replace the clutch components and pilot bushing if necessary. If the vehicle is equipped with an automatic transmission, now would be a good time to check and replace the front pump seal/O-ring. Use paint or a center-punch to make alignment marks on the flywheel/driveplate and crankshaft to ensure correct alignment during reinstallation. Remove the bolts that secure the flywheel/driveplate to the crankshaft. If the crankshaft turns, hold the flywheel with a pry bar or wedge a screwdriver into the ring gear teeth to jam the flywheel. Remove the flywheel/driveplate from the crankshaft. Since the flywheel is fairly heavy, be sure to support it while removing the last bolt. Clean the flywheel to remove grease and oil. Inspect the surface for cracks, rivet grooves, burned areas and score marks. Light scoring can be removed with emery cloth. Check for cracked and broken ring gear teeth or a loose ring gear. Lay the flywheel on a flat surface and use a straightedge to check for warpage. Clean and inspect the mating surfaces of the flywheel/driveplate and the crankshaft. If the crankshaft rear seal is leaking, replace it before reinstalling the flywheel/driveplate. Position the flywheel/driveplate against the crankshaft: Be sure to align the marks made during removal. Note that some engines have an alignment dowel or staggered bolt holes to ensure correct installation. Before installing the bolts, apply thread locking compound to the threads. Wedge a screwdriver into the ring gear teeth to keep the flywheel/ driveplate from turning as you tighten the bolts to the specific torque. The remainder of installation is the reverse of the removal.

If the vehicle has an automatic transmission, it's a good time to check and replace the front pump seal/O-ring during the removal process.

Before installing the bolts, apply thread locking compound to the threads.