Dodge Ram Truck 1500-2500-3500. Manual — part 247

TRANSMISSION

STANDARD PROCEDURE

TRANSMISSION COOLER LINE QUICK CONNECT FITTING DISASSEMBLY/
ASSEMBLY

DISCONNECT

1. Remove dust cap by pulling it straight back off of

quick connect fitting.

2. Place disconnect tool Special Tool 8875A onto

transmission cooler line with the fingers of the tool
facing the quick connect fitting.

3. Slide disconnect tool down the transmission line

and engage the fingers of the tool into the retaining
clip. When properly engaged in the clip, the tool
will fit flush against the quick connect fitting.

4. Rotate the disconnect tool 60° to expand the

retaining clip.

5. While holding the disconnect tool against the quick

connect fitting, pull back on the transmission cooler
line to remove.

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CONNECT

1. Align transmission cooler line with quick connect fit-

ting while pushing straight into the fitting.

2. Push in on transmission cooler line until a “click” is

heard or felt.

3. Slide dust cap down the transmission cooler line

and snap it over the quick connect fitting until it is
fully seated and rotates freely. Dust cap will only
snap over quick connect fitting when the transmis-
sion cooler line is properly installed.

NOTE: If dust cap will not snap into place, repeat
assembly step 2.

DR/DH

TRANSMISSION

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COOLER-TRANSMISSION OIL

DESCRIPTION

ALL VEHICLES

An air-to-oil transmission oil cooler is standard on all
engine packages. The transmission oil cooler is
mounted to the front of the radiator above the power
steering cooler and

5.9L DIESEL

All diesel models equipped with an automatic trans-
mission are equipped with both a main water-to-oil
cooler and a separate air-to-oil cooler. Both coolers
are supplied as standard equipment on diesel engine
powered models when equipped with an automatic
transmission.

The

main

water-to-oil

transmission

oil

cooler

is

mounted to a bracket on the intake side of the engine.

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The air-to-oil cooler is located in front of the radiator.

OPERATION

GAS ENGINES

Transmission oil is routed through the cooler where heat is removed from the transmission oil before returning to the
transmission.

5.9L DIESEL ENGINE

The transmission oil is routed through the main cooler first, then the auxiliary cooler where additional heat is
removed from the transmission oil before returning to the transmission. The auxiliary cooler has an internal thermo-
stat that controls fluid flow through the cooler. When the transmission fluid is cold (less then operating temperature),
the fluid is routed through the cooler bypass. When the transmission fluid reaches operating temperatures and
above, the thermostat closes off the bypass allowing fluid flow through the cooler. The thermostat is servicable.

DR/DH

TRANSMISSION

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