Engine Coolant Fan Shroud Replacement L18

1. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement .
2. Remove the fan shroud bolts.
3. Remove the fan shroud.

1. Install the fan shroud.

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 fan shroud bolts.

Tighten
Tighten the fan shroud bolts to 6 N·m (53 lb in).

3. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement .

Engine Coolant Fan Shroud Replacement L18 Lower

1. Remove the upper fan shroud. Refer to Fan Shroud Replacement .
2. Raise the vehicle.



3. For the 8.1L, remove the lower fan shroud bolts and the lower fan shroud.



4. For the 6.5L (Diesel), remove the lower fan shroud bolts and the lower fan shroud.
5. Inspect the lower fan shroud for signs of damage. If necessary, replace the lower fan shroud.

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.

1. For the 8.1L, install the lower fan shroud and the lower fan shroud bolts.

Tighten
Tighten the bolts to 9 N·m (71 lb in).




2. For the 6.5L (Diesel), install the lower fan shroud and the lower fan shroud bolts.

Tighten
Tighten the bolts to 9 N·m (71 lb in).

3. Install the front differential carrier shield (if equipped).
4. Lower the vehicle.
5. Install the upper fan shroud. Refer to Fan Shroud Replacement .

Engine Coolant Fan Shroud Replacement LG5

Tools Required

1. Remove the front wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.



2. Remove the intake air duct (1) from the air filter housing.
3. Remove the cooling fan. Refer to Fan Clutch Replacement .
4. Drain the cooling system. Refer to Cooling System Draining and Filling .
5. Remove the upper radiator hose. Refer to Radiator Inlet Hose Replacement .
6. Remove the surge tank. Refer to Radiator Surge Tank Replacement .
7. Remove the surge tank mounting bracket, if equipped.
8. Remove the automatic transmission oil cooler lines, if equipped.
9. Remove the lower radiator hose. Refer to Radiator Outlet Hose Replacement .
10. Remove the heater hose.
11. Remove the fan shroud bolts.



12. Remove the fan shroud.

1. Install the fan shroud.

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 fan shroud bolts.

Tighten
Tighten the fan shroud bolts to 6 N·m (53 lb in).

3. Install the heater hose.
4. Install the lower radiator hose. Refer to Radiator Outlet Hose Replacement .
5. Install the automatic transmission oil cooler lines, if equipped.

Tighten
Tighten the transmission cooler line fitting to 30 N·m (22 lb ft).

6. Install the surge tank mounting bracket, if equipped.
7. Install the surge tank. Refer to Radiator Surge Tank Replacement .
8. Install the upper radiator hose. Refer to Radiator Inlet Hose Replacement .
9. Install the cooling fan. Refer to Fan Clutch Replacement .



10. Install the front intake air duct (1) to the air filter housing.
11. Install the front wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
12. Fill the cooling system. Refer to Cooling System Draining and Filling .