Section 03-00: Engine, Service
1996 All F-150, F-250, F-350, F-Super Duty and Bronco Vehicles Equipped with 4.9L, 5.0L, 5.8L or 7.5L Gasoline Engines, and 7.3L Diesel Engines Workshop Manual
SERVICE PROCEDURES

Timing Chain Deflection (5.0L, 5.8L, and 7.5L)

  1. Remove engine front cover (6019) as outlined in Section 03-01B (5.0L and 5.8L MFI) or Section 03-01C (7.5L MFI).

  1. Rotate the crankshaft (6303) so the camshaft sprocket and crankshaft sprocket timing marks line up.

  1. Mark the top link(s) of the timing chain.

  1. Have an assistant hold crankshaft with a suitable tool so it cannot turn.

  1. Place a machinists scale above the timing chain so you can measure its movement.

  1. Put a torque wrench and socket on the camshaft sprocket bolt.

  1. Apply a maximum of 20 Nm (15 lb-ft) torque in a clockwise direction.

  1. Note location of marked link on scale.

  1. Apply a maximum of 20 Nm (15 lb-ft) torque in a counterclockwise direction while measuring the amount the marked link moves.

  1. Movement should be less than 3.175mm (0.12 inch). If movement is excessive, replace timing chain as outlined in the appropriate Section 03-01B (5.0L and 5.8L MFI) or Section 03-01C (7.5L MFI).