Nissan 12296-JA10A Rear Main Seal

Remove the engine/transaxle assembly, then separate the transaxle from the engine. Next, remove the driveplate and the bolts from the rear seal retainer. Tap the retainer sideways with a plastic hammer to break the seal and remove it, discarding the seal/retainer assembly as it must be replaced with a new one. Clean all old RTV sealant from the rear of the engine and the oil pan using brake system cleaner. Obtain special seal installation tool J-47128 from automotive tool suppliers or Nissan dealerships, then loosen the tool's wingnut. Install the tool onto the rear of the crankshaft to cover the sealing surface and tighten the wingnut. Apply a bead of RTV sealant to the sealing surface of the new retainer, lightly lubricate the Crankshaft Seal lip with clean engine oil, and slide it over the tool into position. Loosen the wingnut and remove the tool, then tighten the retainer bolts to the specified torque. The remaining steps involve reversing the removal process.