FORD 2008 Explorer v.3 - Manual (Page 379)

If the original universal joints are replaced with universal joints equipped
with grease fittings, lubrication will be necessary.
Note: Your vehicle’s driveshaft is balanced. If undercoating the vehicle,
protect the driveshaft and universal joints to prevent overspray of any
undercoating material.
AIR FILTER
Refer to scheduled maintenance information for the appropriate
intervals for changing the air filter element.
When changing the air filter element, use only the Motorcraft air filter
element listed. Refer to Motorcraft part numbers in this chapter.
To reduce the risk of vehicle damage and/or personal burn
injuries do not start your engine with the air cleaner removed
and do not remove it while the engine is running.
Changing the air filter element
• 4.0L Engine
• 4.6L Engine
1. Release the clamps that secure the air filter housing cover.
2. Carefully separate the two halves of the air filter housing.
Maintenance and Specifications
379