Engine Oil Cooler Hose/Pipe Replacement

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

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





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.

Installation Procedure





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.

2. Clean all dirt and oil from oil cooler hose adaptor bolt (2) threads and apply teftlon pipe sealant to the threads. Refer to Adhesives, Fluids, Lubricants, and Sealers [1][2]Fluid Type Specifications

Caution:
Refer to Fastener Caution Fastener Caution.

3. Install the oil cooler hose adapter bolts (2) and tighten to 12 Nm (106 lb in).

4. Install the oil cooler hose bracket bolt (1) and tighten to 25 Nm (18 lb ft).





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

6. 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.

7. Connect the oil cooler lines. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement.

8. Pull back sharply on the cooler line in order to ensure that the cooler line is installed in the quick connect fitting.