F 150 2WD Pickup V8-5.4L SOHC VIN 3 (1999)
Torque Converter: Service and Repair
4R70W
Flushing
NOTE: When the transmission has been repaired for internal damage the torque converter must be cleaned using a mechanically agitated cleaner.
1. Use Torque Converter/Oil Cooler Cleaner to clean and flush the torque converter.
2. After flushing, drain the remainder of the solvent.
3. Add 1.9 liter (2 quart) of clean transmission fluid to the converter and agitate by hand.
4. Thoroughly drain the solution.
Service and Replacement
1. The torque converter must be replaced if one or more of the following statements are true:
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A torque converter malfunction has been determined based on complete diagnostic procedures.
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Converter studs (5), impeller hub or bushing are damaged.
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Discoloration (due to overheating).
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The torque converter is found to be out of specification when performing one of the following torque converter checks:
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One-Way Clutch Check
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End Play Check
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Stator to Turbine Interference Check
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Stator to Impeller Interference Check
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Torque Converter Leak Check
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Evidence of transmission assembly or fluid contamination due to the following transmission or converter failure modes:
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Major Metallic Failure
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Multiple Clutches or Clutch Plate Failures
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Sufficient Component Wear which results in Metallic Contamination
