BMW 21217519493 Twin Mass Flywheel

New flywheel driveplate retaining bolts will be required on installation, and thread-locking compound may be necessary. Begin by removing the manual or automatic transmission, and for models with a manual transmission, take out the clutch. To remove the bolts, lock the flywheel/driveplate in position using a flywheel locking tool, which should be bolted to the engine block with one of the transmission-to-engine bolts. Progressively loosen and remove the retaining bolts, then withdraw the flywheel/driveplate from the crankshaft, taking care as it is heavy and noting that it locates on dowels. If an engine/transmission intermediate plate is installed, remove it while noting its orientation. For installation, reinstall the intermediate plate, ensuring it is correctly located on the dowel(s). Reinstall the flywheel/driveplate to the crankshaft end, ensuring the locating dowel engages, with the position indicated by notches on dual-mass flywheels. Examine the threads of the new retaining bolts; if not coated with thread-locking compound, apply a non-hardening compound before reinstalling the bolts. Tighten the bolts progressively in a diagonal sequence to the specified torque and lock the flywheel/driveplate by reversing the tool used during removal. If applicable, reinstall the clutch and then the transmission.