OEM 2009 Lincoln Navigator Exhaust Manifold

2009 Lincoln Navigator Exhaust Manifold Parts Q&A

• Q: How to remove and replace the left-hand exhaust manifold on 2009 Lincoln Navigator?

  A: The replacement process for the left-hand exhaust manifold needs to start with placing the vehicle into neutral gear and positioning it on a hoist. Start the engine replacement by disconnecting the air cleaner outlet pipe together with the degas bottle. The intermediate shaft disconnect process requires caution because steering column shaft rotation could damage the Clock Spring. In case the column does rotate, the technician needs to remove and realign the Clock Spring. Initially disconnect the steering shaft by removing its bolt and place it safely to the side. Minimize the four exhaust manifold-to-catalytic converter nuts before proceeding to remove the front driveshaft from four-wheel drive models. The eight exhaust manifold nuts and eight studs need removal along with the exhaust manifold from the engine bay before discarding both components. Use a plastic scraper together with metal surface prep to clean the sealing surfaces while preventing damage from abrasive tools. Take out the two exhaust manifold gaskets while inspecting the exhaust manifold structure. Use new exhaust manifold gaskets together with eight new studs before spacing them correctly and tightening them to 12 Nm (106 lb-in). The installation process requires new exhaust manifold nuts which should be tightened to 25 Nm (18 lb-ft) as per the specific sequence established for the work. Front driveshaft reinstallation becomes necessary for vehicles having four-wheel drive. The steering shaft receives installation first with the bolt secured at 30 Nm (22 lb-ft). Then install the four exhaust manifold-to-catalytic converter nuts and finally attach the degas bottle and air cleaner outlet tube.