What is the first step in replacing an engine water pump?

Draining the coolant is indeed the first step in replacing an engine water pump. This procedure is essential for several reasons. First, if the coolant is not drained, it could spill out and create a mess when the water pump is removed. More critically, working on a worn or damaged water pump can lead to coolant leaks, causing injury or improper conditions in the engine’s cooling system.

By draining the coolant before beginning removal of the water pump, you ensure a cleaner and safer work environment. This step also helps prevent contamination or hazards associated with coolant spills, as the fluid can be toxic and affect the environment. After the coolant has been properly drained, the next steps can involve removing belts, detaching the pump, and eventually installing the new pump along with a gasket replacement.