When the serpentine belt breaks on a cold winter day the outside temperature may allow you to drive to the nearest service center. On a hot summer day when this happens if you don't pull over quickly and turn off the engine serious damage could occur. So print out this 4 Liter Ford Belt Diagram and throw it in a storage compartment along with a new serpentine belt and the needed tools.
4 Liter Ford Belt Diagram
Checking engine drive belts
Over time serpentine belts will stretch and lose their tension. To compensate for this the 4 L Ford engine has an automatic belt tensioning system that is spring-loaded so that the right amount of pressure is applied automatically.
When this spring starts to wear then looseness can develop. In many cases the first signs of a problem would be a squealing sound when extra load is applied to the serpentine belt. An example would be when you turn on your air-conditioning system on your explorer and then apply some RPMs you may hear a screeching sound from the slipping drive belt.
Although not common on the 4.0 L engine or the Ford Explorer on other vehicles it can also go the other way where excessive tension may put unwanted stress on the pulley and the accessories that they drive. This can lead to a belt breaking but can also lead to premature wear of the component that it drives.
For more information and pictures of popular serpentine belt diagrams visit the page that has nothing but links to engine belt diagrams. For more automotive repair information on a variety of subjects visit the blog section of this online auto repair website. This next link will take you to the recent posts listing area from this page about the 4 Liter Ford Belt Diagram.