Transmission Oil Cooler

DESCRIPTION

CAUTION: On in-radiator type oil coolers, if transmission oil cooler is leaking, engine coolant may enter cooler, or transmission oil may enter engine cooling system. Both engine cooling system and transmission oil circuit should be drained, flushed, and inspected.

There are two types of transmission oil coolers used. One type of cooler is the in-radiator type or oil to coolant type. This type oil cooler is not serviceable. The second type used is a remote type auxiliary oil cooler or oil to air cooler. The oil to air type cooler is located in front of the radiator, and is serviceable.







Auxiliary transmission coolers are mounted ahead of the radiator. They operate in conjunction with the main cooler located in the radiator lower tank.








OPERATION
The transmission oil is routed through the main cooler in the radiator lower tank where heat is removed from the transmission oil, then routed through the auxiliary cooler where additional heat is removed before returning to the transmission.