Water Pump Outlet Pipe Replacement 6.6L (LB7) Engine

1. Remove the oil filter adapter and oil cooler assembly. Refer to Oil Filter Adapter and Oil Cooler Assembly Replacement .
2. Remove the oil cooler inlet/water pump outlet pipe from the engine oil cooler.
3. Remove and discard the O-ring seal.
4. Remove the gasket and clean the sealing surface.

1. Install a new O-ring seal on the water pump outlet pipe.
2. Lightly lubricate the O-ring seal with engine oil.
3. Install the oil cooler inlet/water pump outlet pipe in the engine oil cooler.
4. Install a NEW oil cooler inlet pipe to water pump gasket.
5. Install the oil filter adapter and oil cooler assembly. Refer to Oil Filter Adapter and Oil Cooler Assembly Replacement .

Water Pump Outlet Pipe Replacement 6.6L (LLY)

1. Remove the water pump. Refer to Water Pump Replacement .
2. Remove the engine coolant pipe.
3. Remove and discard the coolant pipe O-ring seal.

1. Install a NEW O-ring seal onto the coolant pipe.
2. Lubricate the O-ring seal with engine coolant.
3. Install the engine coolant pipe.
4. Install the water pump. Refer to Water Pump Replacement .