Water Pump: Service and Repair

Coolant Pump-4.6L, 5.4L and 6.8L





Material

Removal
1. Remove the fan and fan clutch.
2. Remove the accessory drive belt.





3. Remove the coolant pump pulley.
1. Remove the bolts.
2. Remove the coolant pump pulley.





4. Remove the bolts.





5. Remove the coolant pump from the cylinder block.

Installation

1. CAUTION: Always fill the cooling system with the same coolant that is present in the system. Do not mix coolant types.

Install a new O-ring on the coolant pump. Coat the new O-ring with engine coolant.





2. CAUTION: Do not rotate the coolant pump housing once the coolant pump has been positioned in the cylinder block. Damage to the O-ring seal will occur.

Install the coolant pump.
1. Lubricate the new O-ring seal using engine coolant and install the O-ring seal onto the coolant pump.
2. Position the coolant pump into the engine block.
3. Install the bolts.





3. Position the pulley onto the coolant pump and install the bolts.
4. Install the accessory drive belt.
5. Install the fan and fan clutch.