It is advised by the manufacturer to ensure that the flywheel bolts are replaced whenever they have been removed. In manual transaxle models, take out the transaxle, clutch and make sure to inspect or replace the clutch parts. In the case of the automatic transaxle, remove the automatic transaxle. Mark the flywheel/driveplate and crankshaft with alignment marks with a center punch or paint to make sure they are aligned when reassembled. Take out the bolts holding flywheel/driveplate to the crankshaft, with a screwdriver to stop the crankshaft turning in case, necessary. The flywheel/driveplate is carefully removed together with supporting it (when taking out the final bolt) and the spacers of automatic transaxle vehicles should also be retained with the driveplate. In dual-mass flywheel engines, create alignment marks, rotate the flywheel so that the bolts fit the holes and place a locking tool to hold the flywheel stationary as the bolts are removed. Retoss the bolts and replace them, keeping away air tools and impact drivers to avoid any damage. Clean flywheel with brake system cleaner, inspecting cracks, warping and examine mating surfaces between flywheel/ driveplate and crankshaft, changing crankshaft rear seal when it leaks. Place the flywheel/ driveplate and spacer in contact with the crankshaft, orienting the marks created during removal, and use thread locking compound on the bolts before connecting them to the bolts in a criss-cross fashion to the applicable torque. In the case of cars that have an automatic transaxle, the installed height of the driveplate should be measured at three equal points and shimmed where needed. Installation should be completed by reversing the removal.