General Procedures: Sprockets

WARNING: To avoid the possibility of personal injury or damage to the vehicle, do not operate the engine with the hood open until the fan blade has been examined for possible cracks and separation.

NOTE: If a component fails to meet the specifications, it is necessary to install a new component or refinish. If the component can be refinished, wear limits are provided as an aid to making a decision. A new component must be installed for any component that fails to meet specifications and cannot be refinished.

Fig 1: Identifying Timing Chain & Timing Chain Crank Sprocket

Courtesy of FORD MOTOR CO.

Inspect the timing chain/belt and the sprockets.
- Install new components as necessary. See TIMING DRIVE COMPONENTS .