RAM 2500 Truck 4WD V8-5.9L VIN Z LDC (1998)
Transmission Cooler: Description and Operation
DESCRIPTION
All gas powered models equipped with an automatic transmission are equipped with a transmission oil cooler mounted internally within the radiator
side tank. This internal cooler is supplied as standard equipment on all gas powered models equipped with an automatic transmission.
The internal radiator oil cooler is not used with the diesel engine.
OPERATION
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.
This heavy duty air-to-oil cooler is an option on most engine packages. It is supplied as standard equipment on both the 8.0L V-10 and 5.9L diesel
engines.
AUXILIARY COOLER
Auxiliary Transmission Oil Cooler-3.9/5.2/5.9 L Engines
An optional air-to-oil transmission oil cooler is available with most engine packages. On the 3.9/5.2/5.9L V-8 engines, this optional cooler is located
between the radiator and air conditioning condenser.
The oil coolers on all gas powered engines operate in conjunction with the internal radiator mounted main oil cooler. The transmission oil is routed
through the main cooler first, then the optional cooler, before returning to the transmission.
