Section 03-01D: Engine, Diesel, 7.3L
1996 F-Series Workshop Manual
SERVICE PROCEDURES

Drive Gear Backlash (All Gears)

 

With the engine front cover removed, perform the following steps:

  1. Install Dial Indicator Bracketry D78P-4201-F and Dial Indicator D78P-4201-G or equivalents on the machined surface of the cylinder block.

  1. NOTE: Keep other gears from moving while performing this procedure.

    Position the dial indicator tip on the sprocket tooth of the gear to be checked.

  1. Rotate gear to remove backlash and zero in the dial indicator.

  1. Rotate gear in opposite direction and measure the backlash.

  1. Backlash should be within 0.038-0.305mm (0.0015-0.012 inch).

  1. If backlash exceeds service limits, the gear should be replaced.

    Checking Timing Gear Backlash