Drive Belt Replacement
Drive Belt, Serpentine

NOTE: Conditions requiring replacement of drive belt (8620) are excessive cracking or wear, severe glazing or frayed cords. Replace drive belts exhibiting any of these conditions. Minor cracks in the back of the drive belt are considered acceptable.



NOTE: The 2.3L, 3.0L, 4.0L and 5.0L engines (6007) are equipped with drive belt tensioners (6B209) that indicate when the drive belt is worn (stretched). A pointer and gauge are built into the drive belt tensioner. When the pointer no longer registers within the range limits of the gauge, the drive belt must be replaced.



Removal

Disconnect the intake air temperature (IAT) sensor electrical connector.

On Aerostar, disconnect the mass air flow (MAF) sensor electrical connector.

Disconnect crankcase ventilation hose.

Loosen air cleaner outlet tube clamps and remove tube.

Lift drive belt tensioner by rotating it counterclockwise and remove the drive belt. (For 3.0L and 5.0L Explorer, rotate clockwise.)


Installation

Position new drive belt over pulleys.

Make sure that all V-grooves make proper contact with the pulley.
Make sure that drive belts are properly seated on the pulleys. One revolution of the engine with an incorrectly seated drive belt may snap the drive belt cords.
On all engines, lift drive belt tensioner and slide drive belt under drive belt tensioner pulley. Release drive belt tensioner to rest on drive belt.

Install air cleaner outlet tube (9B659) and tighten clamps to 2-3 Nm (18-26 lb-in).

Connect crankcase ventilation hose.

On Aerostar, connect the mass air flow (MAF) sensor electrical connector.

Connect the intake air temperature (IAT) sensor electrical connector.