COOLER-OIL & LINES
DESCRIPTION
An engine oil cooler is used on 3.8L engines (Heavy Duty Cooling Only) . The cooler is a coolant-to-oil type and mounted between the oil filter and engine block.
OPERATION
Engine oil travels from the oil filter and into the oil cooler. Engine oil then exits the cooler into the main gallery. Engine coolant flows into the cooler from the heater return tube and exits into the water pump inlet.REMOVAL
1. Drain cooling system.
2. Disconnect oil cooler inlet and outlet hoses (2,4).
3. Remove oil filter.
4. Remove oil cooler attachment fitting (4).
5. Remove oil cooler.
INSTALLATION
1. Lubricate seal and position oil cooler to connector fitting on oil filter adapter (1).
NOTE: Position the flat side of oil cooler parallel to oil pan rail.
2. Install oil cooler attachment fitting (4) and tighten to 27 N·m (20 ft. lbs.).
3. Install oil filter.
4. Connect oil cooler inlet and outlet hoses (2,4).
5. Fill cooling system.