F 150 4WD Pickup V8-5.4L SOHC VIN 3 (1999)
Torque Converter: Service and Repair
4R100
Flushing
1. CAUTION: Mineral spirits used to clean the torque converter must be fresh, non-chlorinated and non-halogenated.
Following the instructions included with the Torque Converter/Transmission Oil Cooler Cleaner, flush the torque converter.
2. After flushing, drain the remainder of the solvent through the converter drain plug.
3. Add 1.9 liter (2 quart) of clean Motorcraft MERCON Multi-Purpose (ATF) Transmission Fluid XT-2-QDX or equivalent Meeting MERCON
specification approved fluid into the converter fluid filler tube and agitate by hand. MERCON(R) automatic Transmission Fluid is being replaced
by MERCON(R) V as a service fluid, as per TSB 06-14-4.
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 the complete diagnostic procedures.
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Converter stud(s), impeller hub or bushing is damaged.
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Discoloration of the torque converter (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.
