Mustang V6-3.8L VIN 4 (1998)
Transmission Cooler: Service and Repair
1. Perform backflushing with a Rotunda Torque Converter Cleaner 307-FO11 (014-00028) or equivalent. Test your equipment to make sure that a
vigorous fluid flow is present before proceeding. Replace the system filter if flow is weak or contaminated.
2. To aid in attaching the cleaner to the transmission steel cooler tubes, connect two additional rubber hoses to the transmission end of the steel
transmission cooler tubes as described below.
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Connect the cleaner tank pressure line to the steel transmission cooler return tube (longer tube).
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Connect a tank return hose to the steel transmission cooler pressure tube (shorter tube). Place the outlet end of this hose in the solvent tank
reservoir.
3. Turn on solvent pump and allow the solvent to circulate a minimum of five minutes (cycling switch on and off will help dislodge contaminants in
cooler system).
4. Switch off the solvent pump and disconnect the solvent pressure hose from the transmission cooler return tube.
5. Use compressed air to blow out the cooler(s) and tubes (blow air into the transmission cooler return tube) until all solvent is removed.
6. Remove the rubber return hose from the remaining steel cooler tube.
