OEM Lincoln Mark LT Muffler

Lincoln Mark LT Muffler Parts Questions & Experts Answers

• Muffler W/Tpipe, Front
  4L3Z-5230-B
  Q: How to service and repair the muffler and tailpipe on Lincoln Mark LT?

  A: Becoming ready for repairing the muffler and tailpipe requires first positioning the vehicle in NEUTRAL in a hoist. Oily substances must never be applied to isolators due to their harmful effect on rubber materials. Always follow the procedure for extension pipe-to-muffler assembly coupling loosening because a new extension pipe and coupling assembly needs replacement. First loosen each coupling of the exhaust intermediate pipe with the muffler and tailpipe, then remove the bolt and the front muffler exhaust bracket and isolator from the frame followed by disconnecting the rear muffler exhaust bracket and isolator before removing the tailpipe exhaust bracket and isolator. Start the muffler and tailpipe assembly removal process by taking out the corresponding components. Start installation from the front of the vehicle and wait to tighten fasteners until you finish component assembly and alignment. Scrape away all rust that appears on the exhaust clamp surface through use of an abrasive pad. After putting the muffler and tailpipe assembly in position begin installing the front muffler exhaust hanger bracket and its isolator to the frame until it reaches 20 Nm (15 ft. lbs.). Second in the sequence comes the installation of the rear muffler exhaust hanger bracket and isolator on the frame tight to 20 Nm (15 ft. lbs.) Next comes the tailpipe exhaust hanger bracket and isolator which also requires tight to 20 Nm (15 ft. lbs.). The exhaust system requires final alignment before tightening all exhaust system clamps.