Monterey V6-4.2L VIN 2 (2004)
Transmission Cooler: Service and Repair
4F50N (AX4N) Electronic Shift Automatic Transmission
Transmission Fluid Cooler Backflushing and Cleaning
Material
1. Carry out backflushing with a suitable torque converter/fluid cooler cleaner. Test the equipment to make sure that a vigorous fluid flow is present
before proceeding. Install a new system filter if flow is weak or contaminated.
2. To aid in attaching the cleaner to the transmission steel cooler tube, connect two additional rubber hoses to the transaxle end of the steel transaxle
cooler tube as follows:
1
Connect the cleaner tank pressure tube to the steel transaxle cooler return tube.
2
Connect a tank return hose to the steel transmission cooler pressure tube. Place the outlet end of this hose in the fluid tank reservoir.
3. Turn on pump and allow the fluid to circulate a minimum of five minutes (cycling switch on and off will help dislodge contaminants in cooler
system).
4. Switch off the pump and disconnect the pressure hose from the transaxle cooler return tube.
5. Use compressed air to blow out the cooler(s) and tubes (blow air into the transaxle cooler return tube) until all is removed.
6. Remove the rubber return hose from the remaining steel cooler tube.
