Jeep Cherokee

 Service Manual

Cooling system » Description and operation
Automatic transmission oil cooler

DESCRIPTION

All models equipped with an automatic transmission are equipped with a transmission oil cooler mounted internally within the radiator tank. This internal cooler is supplied as standard equipment on all models equipped with an automatic transmission.

Transmission oil is cooled when it passes through this separate cooler. In case of a leak in the internal radiator mounted transmission oil cooler, engine coolant may become mixed with transmission fluid or transmission fluid may enter engine cooling system.

Both cooling system and transmission should be drained and inspected if the internal radiator mounted transmission cooler is leaking.

An auxiliary air-to-oil transmission oil cooler is available with most engine packages.

The auxiliary air-to-oil transmission oil cooler is located in front of the radiator or A/C condenser (if equipped) and behind the grill. It is mounted to the front frame crossmember.

The auxiliary oil coolers on all models operate in conjunction with the internal radiator mounted main oil cooler. The transmission oil is routed through the main cooler first, then the auxiliary cooler, before returning to the transmission.

Fig. 2 Auxiliary Transmission Oil Cooler

1 - AUXILIARY TRANSMISSION OIL COOLER

Cooling system

Automatic transmission oil cooler

Coolant reserve/overflow system

Cooling system fans

Block heater

Thermostat

Radiator

Radiator pressure cap

Water pump

Hose clamps

Viscous fan drive

Electric cooling fan