The drive belt tension is maintained by an automatic belt tensioner and does not require adjustment.
Drive Belt Routings
Fig. Serpentine accessory drive belt routing-3.0L (VIN U) engine
Fig. Serpentine accessory drive belt routing-3.0L (VIN S) engine
Fig. Serpentine accessory drive belt routing-Ford 3.0L (VIN U) engines
Fig. Serpentine accessory drive belt routing-Ford 3.0L (VIN S) engine
Fig. Serpentine accessory drive belt routing-Ford 3.4L SHO engine
Fig. Water pump drive belt routing-Ford 3.4L SHO engine
Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.
Removal & Installation
When installing the drive belt on the pulleys, make sure all the V-grooves make proper contact with the pulleys.
Use caution when removing or installing the belt and make sure the tool does not slip from the drive belt tensioner or personal injury or damage to the belt tensioner and the belt may occur.
Attach a 15mm socket or wrench to the bolt attaching the tensioner pulley.
On all 3.0L (OHV) engines, rotate the drive belt tensioner clockwise to relieve belt tension and slide the belt off the pulleys.
On 3.0L (DOHC) engines, rotate the tensioner counterclockwise to relieve belt tension and slide the belt off the pulleys.
Fig. Rotate the belt tensioner and . . .
Fig. . . . remove the belt from around one of the pulleys to remove the belt
Fig. This label, usually affixed in the engine compartment, will give a diagram of the belt routing
Fig. A very useful tool kit is available to use for releasing the spring loaded belt tensioner
Fig. Place the proper size socket into the release bar
Fig. Some vehicles use a 3/8 or 1/2 drive opening on the tensioner
Fig. An extension is available , if needed, to avoid components obstructing the path to the tensioner
Fig. Just place the extension on the end of the release bar and tighten the retaining bolt
Install the drive belt on all the pulleys except the tensioner pulley.
Rotate the belt tensioner as outlined in the removal procedure to relieve belt tension and install the belt onto the tensioner pulley. Make sure the V-grooves make proper contact with the pulleys. Make sure the spring keeper releases or improper belt tension will occur.