Section 03-05: Drive Belts, Accessory
1997 F-250 Heavy Duty, F-350, F-Super Duty Workshop Manual
REMOVAL AND INSTALLATION

Drive Belt Replacement

Conditions requiring drive belt (8620) replacement are rib chunk-out, excessive wear, severe glazing, frayed cords. Replace any drive belt exhibiting any of these conditions. Minor cracks in the ribbed side of V-grooved portion of the drive belt are considered acceptable.

Drive Belt, Serpentine (Poly-V)

  1. NOTE: The illustration of the serpentine drive belt in this procedure is typical. Refer to the proper serpentine drive belt routing diagram in this section, or as indicated on the underhood label, for the specific engine (6007) being serviced.

    Route drive belt on the pulleys properly as indicated on the correct diagram. The belt span that extends past the flat belt idler pulley (8678) should be loose.

    7.3L Diesel Engine Belt Routing

    ItemPart NumberDescription
    119A216Flat Idler Pulley
    2—A/C Compressor Pulley (Part of 19D629)
    32L487Brake Vacuum Pump Pulley
    43A733Power Steering Pump Pulley
    58620Drive Belt
    68501Water Pump Pulley
    76312Crankshaft Pulley
    88678Belt Idler Pulley (Grooved)
    96B209Drive Belt Tensioner
    1010300Generator Pulley
    A—This Belt Span Should Be Loose

  1. Check to see that the drive belt is positioned correctly on all pulleys. Make sure all drive belt ribs are correctly seated in the pulley grooves.

  1. Install a closed-end wrench on the drive belt tensioner pulley, rotate in the proper direction to lift the tensioner arm away from the drive belt and install the drive belt properly under the flat idler pulley. Do not allow the drive belt tensioner (6B209) to snap back because this can damage the drive belt.

  1.  CAUTION: Make sure the drive belt is properly seated on all pulleys. One revolution on the engine with an incorrectly seated drive belt can snap the tensile members in the drive belt.

    Visually inspect drive belt alignment.

  1. Slowly release the drive belt tensioner toward the drive belt to tighten the drive belt and complete installation.

    ItemPart NumberDescription
    119A216Flat Idler Pulley
    2—A/C Compressor Pulley (Part of 19D629)
    32L487Brake Vacuum Pump Pulley
    43A733Power Steering Pump Pulley
    58620Drive Belt
    68501Water Pump Pulley
    76312Crankshaft Pulley
    88678Belt Idler Pulley (Grooved)
    96B209Drive Belt Tensioner
    1010300Generator Pulley
    A—Install Drive Belt Under Flat Idler Pulley
    B—Rotate to Loosen, Tighten to Install Drive Belt