Engine Oil Cooler Hose/Pipe Replacement 2WD

1. Raise and the support vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



2. Remove the engine oil cooler line clamp bolt.




Important: Have a drain pan ready for the engine oil to drain into.

3. Remove the bolt attaching the engine oil cooler lines to the oil filter adapter.
4. Remove and discard the seals.
5. Lower the vehicle.
6. Remove air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.3 L.



7. Remove the engine oil cooler line from the radiator.
8. Remove the engine oil cooler lines.
9. Clean all of the components in a suitable solvent, and dry them with compressed air.
10. Inspect the fittings, the connectors, the cooler for damage, distortion, or restriction. Replace parts a necessary.
11. Flush the engine oil cooler and engine oil cooler lines with the same type of engine oil normally circulating through the engine.

Important: When performing the following procedure, do not reuse the old retaining rings. Replace the old retaining rings with new ones.

1. Install the engine oil cooler lines.
2. Install the engine oil cooler lines to the radiator.



3. Install air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.3 L.
4. Raise the vehicle.



5. Install new seals on the engine oil cooler lines .




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

6. Install the bolt attaching the engine oil cooler lines to the engine oil filter adapter.

Tighten
Tighten the engine oil filter adapter bolt to 35 N·m (26 lb ft).




7. Install the cooler line clamp and the bolt.

Tighten
Tighten the cooler line clamp bolt to 10 N·m (89 lb in).

8. Lower the vehicle.
9. Inspect and fill the engine oil to the proper level.

Engine Oil Cooler Hose/Pipe Replacement 4WD

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the front skid plate bolt.
3. Remove the front skid plate.

Important: Have a drain pan ready for the engine oil to drain into.




4. Remove the bolt from the remote oil filter adapter.
5. Remove and discard the seals.



6. Lower vehicle.
7. Remove air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.3 L
8. Remove the engine oil cooler lines from radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .



9. Remove engine oil cooler lines from the vehicle.



10. Inspect the fittings, the connectors, the cooler lines, the cooler, the filter lines, and the remote filter adapter for damage, distortion, or restriction. Replace parts as necessary.
11. Flush the engine oil cooler, the engine oil cooler lines, the remote engine oil filter adapter, and the remote engine oil filter lines with the same type of engine oil normally circulating through the engine.

1. Install new seals on both ends of the engine oil cooler line.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the engine oil cooler line mounting bolt to the remote oil filter adapter.

Tighten
Tighten the bolt to 35 N·m (26 lb ft).




3. Install the engine oil cooler mounting bolt to the engine.

Tighten
Tighten the bolt to 35 N·m (26 lb ft).





Important: When performing the following procedure, do not reuse the old retaining rings. Replace the old retaining rings with new ones.

4. Install the engine oil cooler lines to the radiator.



5. Pull back on the engine oil cooler lines to ensure a proper connection.



6. Install the front skid plate.
7. Install the front skid plate bolts.

Tighten
Tighten the bolts to 32 N·m (24 lb ft).

8. Lower the vehicle
9. Inspect and fill the engine oil to the proper level.