Engine Oil Cooler Hose/Pipe Replacement LR4, LM7, LQ4

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. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement.



2. Open the oil cooler hose clip located on the lower fan shroud.
3. Remove the oil cooler hoses from the clip.
4. Gently, pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.



6. Remove the oil cooler hose bracket bolt (1).
7. Remove the oil cooler hose adapter bolts (2).
8. Remove the oil cooler hose assembly and gasket.
9. Discard the gasket.
10. Inspect the fittings, connectors and cooler hoses for damage or distortion.

Note: 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. Install the oil cooler hose assembly and a new gasket.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the oil cooler hose adapter bolts (2) and tighten to 12 N·m (106 lb in).
3. Install the oil cooler hose bracket bolt (1) and tighten to 25 N·m (18 lb ft).



4. Install the oil cooler hoses to the hose clip on the fan shroud.
5. Snap the oil cooler hose clip shut.




Note: 

•	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.

6. Connect the oil cooler lines. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement.
7. Pull back sharply on the cooler line in order to ensure that the cooler line is installed in the quick connect fitting.

Engine Oil Cooler Hose/Pipe Replacement LU3

1. Disconnect the oil cooler hose (1) from the radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement
2. Gently, pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
3. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle



4. Remove the oil cooler hose bracket nut (1).
5. Remove the oil cooler hose adapter nut (2).
6. Remove the oil cooler hose assembly and seals.
7. Discard the seals.
8. Inspect the fittings, connectors and cooler hoses for damage or distortion.

Note: 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. Install the oil cooler hose assembly and a new seals.

Caution: Refer to Fastener Caution in the Preface section.




2. Install the oil cooler hose adapter nut (2) and tighten to 12 N·m (106 lb in)
3. Install the oil cooler hose bracket nut (1) and tighten to 25 N·m (18 lb ft)




Note: 

•	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.

4. Connect the oil cooler hose (1) to the radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement
5. Pull back sharply on the cooler line in order to ensure that the cooler line is installed in the quick connect fitting.