Engine Oil Cooler Hose/Pipe Replacement

Engine Oil Cooler Hose/Pipe Replacement (2WD)

Removal Procedure
The optional oil cooler is either an integral part of the radiator or a separate unit placed in front of the radiator. The cooler lines and hoses are serviceable.





1. Disconnect the engine oil cooler quick connect fittings.
2. If equipped with a 5.3L or 6.0L engine, perform the following:
1. Open the oil cooler hose clip located on the lower fan shroud.
2. Remove the oil cooler hoses from the clip.
3. Raise and suitably support the vehicle.





4. If equipped with a 8.1L engine, perform the following:
5. Remove the oil cooler hoses from the clip.
6. Raise and suitably support the vehicle.





7. If equipped, remove the engine shield bolts.
8. Remove the engine shield.





9. If equipped with a 5.3L or 6.0L engine, perform the following:
1. Remove the oil cooler hose bracket bolt (1).
2. Remove the oil cooler hose adapter bolts (2).
3. Remove the oil cooler hose assembly and gasket. Discard the gasket.
4. Inspect the fittings, connectors and cooler hoses for damage or distortion.





10. If equipped with a 8.1L engine, perform the following:
1. Remove the oil cooler hose bracket bolt.
2. Disconnect the quick connect fittings (1) at the engine.
3. Remove the oil cooler hose assembly. Discard the gasket.
4. Inspect the fittings, connectors and cooler hoses for damage or distortion.

Installation Procedure






1. If equipped with a 8.1L engine, perform the following:
1. Install the oil cooler hose assembly and a NEW gasket.
2. Connect the quick connect fittings (1) at the engine.

Important: A distinct snap should be heard when assembling the tube ends of the hose assembly to the quick connectors. To ensure the tube is fully inserted into the connector, check by giving the tube a forceful pull.

3. Install the oil cooler hose bracket bolt.
Tighten the bolt to 50 Nm (37 ft. lbs.).

Notice: Refer to Fastener Notice in Service Precautions.






2. If equipped with a 5.3L or 6.0L engine, perform the following:
1. Install the oil cooler hose assembly and a NEW gasket.
2. Install the oil cooler hose adapter bolts (2).
Tighten the bolts to 12 Nm (106 inch lbs.).
3. Install the oil cooler hose bracket bolt (1).
Tighten the bolt to 25 Nm (18 ft. lbs.).





3. If equipped, install the engine shield.
4. Install the engine shield bolts.
Tighten the bolts to 20 Nm (15 ft. lbs.).
5. Lower the vehicle.





6. If equipped with a 5.3L or 6.0L engine, perform the following:
1. Install the oil cooler hoses to the hose clip on the fan shroud.
2. Snap the oil cooler hose clip shut.





7. If equipped with a 8.1L engine perform the following:
8. Install the oil cooler hoses to the clip.
9. Connect the engine oil cooler quick connect fittings.

Important:
^ Ensure the oil cooler line being installed has a plastic cap on the end that connects to the quick connect fitting. If no plastic cap exists, or the plastic cap is damaged, obtain a new cap. Install the cap onto the cooler line prior cooler line installation.
^ Do not use the plastic cap in order to install the cooler line into the fitting.