Water Pump: Service and Repair

Coolant Pump





Degas Bottle









Coolant Pump









Removal and Installation

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.

3. Disconnect the degas bottle-to-radiator hose from the degas bottle.

4. Remove the nut, bolt and position the degas bottle for access to the lower degas bottle hose.
- To install, tighten to 9 Nm (80 lb-in).

5. Disconnect the lower degas bottle hose and remove the degas bottle.

6. Loosen the 3 coolant pump pulley bolts.

7. Remove the accessory drive belt. For additional information, refer to Accessory Drive - Hybrid Accessory Drive Belt.

8. Remove the 3 bolts and the coolant pump pulley.
- To install, tighten to 20 Nm (177 lb-in).

9. NOTICE: Make sure the coolant pump is correctly seated to the engine block before installing and tightening the fasteners, or damage to the coolant pump may occur.

Remove the 3 bolts and the coolant pump.

- Remove and discard the O-ring seal.

- To install, tighten to 10 Nm (89 lb-in).

10. NOTICE: Genuine Mazda(R) Extended Life Coolant and Motorcraft(R) Specialty Green Engine Coolant are very sensitive to light. Do NOT allow these products to be exposed to ANY LIGHT for more than a day or two. Extended light exposure causes these products to degrade.

To install, reverse the removal procedure.

- Lubricate the O-ring seal with clean engine coolant.

11. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.