OEM 2007 Lincoln Navigator Muffler

2007 Lincoln Navigator Muffler Parts Questions & Experts Answers

• Q: How to service and repair the muffler and tailpipe on 2007 Lincoln Navigator?

  A: A hoist using NEUTRAL gear position should support the vehicle as the first step for muffler and tailpipe maintenance. As a first step you should remove the transfer case skid plate if your vehicle has this equipment installed. Unfasten the clamping mechanism of the tailpipe or resonator that joins it to the muffler assembly. The tailpipe can be separated from Expedition models by removing bracket assembly and isolator bolts while Navigator models require removing the resonator. A suitable jack stand should be used to support the muffler after which you must remove and discard the exhaust Y-pipe dual catalytic converter-to-muffler assembly bolts and flag nuts. It is essential to keep away from axle boots when guiding the muffler assembly outlet above the rear axle so no damage occurs. Unfasten the isolators which attach to the muffler assembly and extract it from the vehicle. The first step of installation includes cleaning both mating surfaces of the exhaust Y-pipe dual catalytic converter-to-muffler assembly while ensuring proper inspection and potential replacement of exhaust hanger isolators. After installation of the muffler assembly into the vehicle position its isolators. It is necessary to apply new fasteners when installing the exhaust Y-pipe dual catalytic converter-to-muffler assembly bolts along with flag nuts while maintaining loose installation. Begin by installing the tailpipe on Expedition vehicles unless you need to install the resonator on Navigator vehicles before tightening the isolator and bracket assembly bolts to 25 Nm (18 ft. lbs.). Use 48 Nm to tighten the clamp linking the exhaust system components while realigning the system between the tailpipe and muffler assembly components. Install the transfer case skid plate when present while tightening its bolts to 25 Nm (18 ft. lbs.).