2004 Lincoln Navigator Owner Guide 3rd Printing (Spanish) - Page 786

Maintenance and Specifications • Remove the tire chains when they are no longer needed. Do not use tire chains on dry roads. • The suspension insulation and bumpers will help prevent vehicle damage. Do not remove these components from your vehicle when using snow tires and chains. • Do not exceed 30 mph (48 km/h) with tire chains on your vehicle. MOTORCRAFT PART NUMBERS Component Air filter element Battery Fuel filter Oil filter PCV valve Spark plugs 1 5.4L 4V V8 engine FA-1634 BXT-65-650 FG-986B FL-820-S 1 2 The PCV valve is a critical emission component. It is one of the items listed in the Scheduled Maintenance Guide and is essential to the life and performance of your vehicle and to its emissions system. For PCV valve replacement, see your dealer or a qualified service technician. Refer to the Scheduled Maintenance Guide for the appropriate intervals for changing the PCV valve. Replace the PCV valve with one that meets Ford material and design specifications for your vehicle, such as a Motorcraft or equivalent replacement part. The customer warranty may be void for any damage to the emissions system if such a PCV valve is not used. 2 For spark plug replacement, see your dealer or a qualified service technician. Refer to the Scheduled Maintenance Guide for the appropriate intervals for changing the spark plugs. Replace the spark plugs with ones that meet Ford material and design specifications for your vehicle, such as Motorcraft or equivalent replacement parts. The customer warranty may be void for any damage to the engine if such spark plugs are not used. Refer to Vehicle Emissions Control Information (VECI) decal for spark plug gap information. 362