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Connecting Rod Cleaning: Inspection

WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using a suitable solvent, thoroughly clean the connecting rod and rod cap.
  2. Mark each connecting rod and its corresponding rod cap for correct installation.
  3. Measure the inside diameter of the piston pin bushing. Install a new connecting rod, if not within specification.
    Fig 1: Measuring Inside Diameter Of Piston Pin Bushing
    G03899068Courtesy of FORD MOTOR CO.
  4. Using a suitable micrometer, measure the connecting rod bearing bore.
    1. Remove the connecting rod bearings from the connecting rod and the connecting rod cap. Install the connecting rod cap onto the connecting rod and tighten the bolts.
    2. Further tighten the connecting rod cap bolts.
      • Measure and record the connecting rod bearing bore as indicated. Install new connecting rods if not within specification.
        Fig 2: Measuring And Record Connecting Rod Bearing Bore
        G03899069Courtesy of FORD MOTOR CO.
  5. Using a suitable micrometer, inspect the connecting rod bearing bore taper.
    1. Measure the bearing bore inside diameter near the large chamfer.
      • Measure the bearing bore inside diameter near the small chamfer.
  1. The difference between the 2 readings is the bore taper. Install new connecting rods if not within specifications.
    Fig 3: Identifying Bore Taper Specification
    G03899070Courtesy of FORD MOTOR CO.
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