Automatic Transmission Cooling System - CD4E: Other Mercury Mariner I

Transaxle Cooling

All vehicles with automatic transmissions are equipped with a transmission fluid cooler integral to the radiator which cannot be repaired separately. The integral transmission fluid cooler transfers heat from the transmission fluid to the engine coolant. The auxiliary transmission fluid cooler transfers heat from the transmission fluid to the outside air.

The transmission fluid cooling system, with an auxiliary transmission fluid cooler, consists of the following

1. An in-tank fluid cooler inlet tube
2. A non-repairable in-tank transmission fluid cooler
3. An in-tank fluid cooler return tube
4. An auxiliary fluid cooler

Scheme 556

Note. Cleaning and backflushing the transmission fluid cooling system as outlined in this article will keep contamination from reentering the transaxle and causing a repeat repair.

When internal wear or damage has occurred in the transaxle, metal particles or clutch plate material may have been carried into the torque converter and transmission fluid cooler. These contaminants are a major cause of recurring transaxle troubles and must be removed from the system before the transaxle is put back in use.

Material

MATERIAL

Scheme 557

Scheme 558

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-232183) .
2. Remove the front bumper cover. For additional information, refer to «BODY SYSTEM - GENERAL INFORMATION»(ref-232266) .
3. Disconnect the transmission fluid cooler tube clamps and disconnect the rubber hoses from the auxiliary cooler.
4. Remove the bolts for the auxiliary and remove the cooler. To install, tighten to 10 Nm (89 lb-in).
5. Fill the transaxle with clean automatic transmission fluid.
6. To install, reverse the removal procedure.

MATERIAL

Scheme 559

Scheme 560

Scheme 561

Scheme 562

Scheme 563

Scheme 564

Scheme 565

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-232183) .
2. Disconnect the transmission fluid cooler tube clamps and disconnect the rubber hoses from the auxiliary cooler.
3. Disconnect the upper fluid cooler rubber hose from the radiator.
4. Remove the 7 retainers and the LH splash shield.
5. Disconnect the lower fluid cooler rubber hose from the radiator.
6. Disconnect and remove the front cooler tube from the transaxle case. To install, tighten to 25 Nm (18 lb-ft).
7. Disconnect and remove the rear cooler tube from the transaxle case. To install, tighten to 25 Nm (18 lb-ft).
8. Disconnect and remove the fluid cooler tube bracket from the transaxle case. To install, tighten to 25 Nm (18 lb-ft).
9. Fill the transaxle with clean automatic transmission fluid.
10. Remove the fluid cooler tubes from under the vehicle and install new as necessary.
11. To install, reverse the removal procedure.

MATERIAL

Scheme 566