Radiator Inlet Hose Replacement L18

Important: Most truck models use spring-type hose clamps at the hose connections. When using this type of clamp, install the hoses on a dry, non-painted surfaces in order to ensure proper sealing. Reusing the spring-type clamps on aftermarket hoses is not recommended.

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Loosen the inlet hose clamp (2) at the coolant crossover.
3. Remove the inlet hose (1) from the coolant crossover.



4. If equipped without regular production option (RPO) KZX, remove the inlet hose clip bolt at the hose support.



5. If equipped with RPO KZX, remove the inlet hose clip bolt at the hose support.



6. Loosen the inlet hose clamp (1) at the radiator.
7. Remove the inlet hose (4) from the radiator.

1. Install the inlet hose (4) to the radiator.

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. Tighten the inlet hose clamp (1) at the radiator.

Tighten
Tighten the inlet hose clamp to 5 N·m (44 lb in).




3. If equipped with RPO KZX, install the inlet hose clip bolt at the hose support.

Tighten
Tighten the inlet hose clip bolt to 5 N·m (44 lb in).




4. If equipped without RPO KZX, install the inlet hose clip bolt at the hose support.

Tighten
Tighten the inlet hose clip bolt to 5 N·m (44 lb in).




5. Install the inlet hose (1) to the coolant crossover.
6. Tighten the inlet hose clamp (2) at the coolant crossover.

Tighten
Tighten the inlet hose clamp to 5 N·m (44 lb in).

7. Refill the cooling system. Refer to Cooling System Draining and Filling .

Radiator Inlet Hose Replacement LG5

1. Remove the front wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
2. Drain the coolant. Refer to Cooling System Draining and Filling .
3. Remove the radiator inlet hose support clamp from the radiator fan shroud.



4. Remove the radiator inlet hose (3) and the clamp (2) from the radiator (1).
5. Remove the radiator inlet hose and the clamp from the coolant outlet.

1. Install the radiator inlet hose and the clamp to the coolant outlet.




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 radiator inlet hose (3) and the clamp (2) to the radiator (1).

Tighten
Tighten the clamps to 5 N·m (44 lb in).

3. Install the radiator inlet support hose clamp to the radiator fan shroud.
4. Install the front wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
5. Fill the cooling system. Refer to Cooling System Draining and Filling .
6. Inspect the system for leaks.