Step 2: Using the 8mm wrench, disconnect the vehicle's negative battery cable.
Step 3: Using the flathead screwdriver, loosen the clamp that secures the air intake hose to the engine. Disengage the retaining clips (2) that secure the air box cover to the assembly. Remove the hose/cover from the vehicle.
Step 4: Insert the square peg on the 3/8 drive ratchet handle into the opening on the IDLER PULLEY (just below the alternator). Turn the tensioner COUNTER CLOCKWISE to release the tension on the belt. You can now remove the serpentine belt from the vehicle.
NOTE: If your belt looks frayed or worn, now is a good time to replace it! Since we have it removed from the vehicle, it'll never be easier than it is right now!
Step 5: Loosen and remove the 13mm bolt (1) that secures the belt tensioner to the assembly. You can now remove the belt tensioner.
Step 6: Mount the new belt tensioner by tightening the 13mm bolt (1).
Step 7: Using the diagram posted near the radiator, on the UNDERSIDE of the hood, or in the owner's manual, route the belt around the proper pulleys.
Step 8: Use the 3/8 drive ratchet handle to turn the tensioner CLOCKWISE, securing the belt to the pulleys.
NOTE: The belt should be taut, but not overly tight or stretched!
Step 9: Re-engage the retaining clips (2) to secure the air box cover to the assembly. Tighten the flathead clamp to secure the air intake hose to the engine.
Step 10: Reconnect the negative battery cable.
These Part Change / Installation Instructions Apply to
01 2001, 00 2000, 99 1999, 98 1998, 97 1997, 96 1996, 95 1995, 94 1994, 93 1993 Ford Explorer, Ranger, Mercury Mountaineer Belt Tensioner Pulley Replacement Instructions