Engine Oil Cooler Hose/Pipe Replacement

Engine Oil Cooler Hose/Pipe Replacement

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 cooler lines.
2. If equipped with a 6.0L engine, perform the following:
2.1. Open the oil cooler hose clip located on the lower fan shroud.
2.2. Remove the oil cooler hoses from the clip.
2.3. Gently, pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
2.4. Raise and suitably support the vehicle. Refer to Vehicle Lifting





3. If equipped with a 8.1L engine, perform the following:
3.1. Remove the oil cooler hoses from the clip.
3.2. Gently, pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
3.3. Raise and suitably support the vehicle. Refer to Vehicle Lifting.





4. If equipped, remove the engine shield bolts.
5. Remove the engine shield.





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





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

Installation Procedure

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





1. If equipped with a 6.0L engine. perform the following:
1.1. Install the oil Cooler hose assembly and new gasket.

Notice: Refer to Fastener Notice in Service Precautions.

1.2. Install the oil cooler loose adapter bolts (2).
^ Tighten the bolts to 12 Nm (106 inch lbs.).
1.3. Install the oil cooler hose bracket bolt (1).
^ Tighten the bolt to 25 Nm (18 ft. lbs.).





2. If equipped, install the engine shield.
3. Install the engine shield bolts.
- Tighten the bolts to 20 Nm (15 ft. lbs.).





4. If equipped with a 6.0L engine, perform the following:
4.1. Install the oil cooler hoses to the hose clip on the fan shroud.
4.2. Snap the oil cooler hose clip shut.





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 on to the cooler line prior to cooler line installation.
- Do not use the plastic cap in order to install the cooler line into the fitting.
- Connect the oil cooler lines.

5. If equipped with a 8.1L engine, perform the following:
5.1. Install the oil cooler hoses to the clip.
5.2. Install the oil cooler lines to the radiator.
Insert the cooler line end into the quick connect fitting until a click is either heard or felt.
5.3. Pull back sharply on the cooler line in order to ensure that the cooler line is installed in the quick connect fitting.