Mazda CX-5 Service & Repair Manual: Water Pump Removal/Installation

WARNING:

• Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system.

• Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes.

• When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.

NOTE:

• Do not disassemble the water pump because it is a precision unit.

• Remove/install the water pump pulley and water pump from the underside of the vehicle.

1. Disconnect the negative battery cable..

2. Remove the front under cover No.2..

3. Remove the splash shield (RH)..

4. Drain the engine coolant..

5. Remove the water pump drive belt with the generator drive belt still installed and set it out of the way..

6. Remove in the order indicated in the table.

7. Install in the reverse order of removal.

8. Refill the engine coolant..

9. Inspect for engine coolant leakage..

Water Pump Pulley Removal Note

CAUTION:

• Be careful not to damage the belt groove and surface of the water pump pulley when using tools, otherwise it will cause wear, breakage, abnormal noise of the drive belt (stretch belt), damage to the pulley, and rust.

1. Align the water pump pulley hole with the water pump hole as shown in the figure.

2. Insert an appropriate bolt (length 70 mm {2.8 in}) into the water pump hole shown in the figure and lock the water pump pulley against rotation.

3. Remove the bolt used for locking the water pump pulley against rotation.

Water Pump Component Removal Note

1. Remove the water inlet pipe stay bolt.

2. Place a container under the engine to collect the engine coolant remaining in the engine.

3. Slightly loosen the three water pump component bolts shown in the figure and collect the draining engine coolant into a container.

CAUTION:

• Do not remove the water pump component completely at this time because the remaining approx. 2 L or less

  of engine coolant flowing in the engine will drain out.

4. After the engine coolant stops draining, remove the water pump component.

O-ring Installation Note

CAUTION:

• Do not apply oil (engine oil, ATF etc.) to the O-ring of the water inlet pipe. Otherwise, the O-ring could swell causing a seal malfunction.

1. Apply engine coolant to a new O-ring.

2. Install the O-ring to the water inlet pipe.

Water Pump Component Installation Note

CAUTION:

• Assemble the water pump gasket to the correct direction shown in the figure. Otherwise, it could leak engine coolant and damage the engine.

  

  
  

1. Insert a new water pump gasket into the water pump groove.

2. Install the water pump.

3. Tighten the bolts in the order shown in the figure.

Tightening torque

1. 20—26 N·m {2.1—2.6 kgf·m, 15—19 ft·lbf}

4. Clean away the sealant adhering to the bolt hole on the cylinder block side of the water inlet pipe stay.

5. Remove the engine oil solenoid valve to secure a sufficient space for installing the water inlet pipe stay bolt..

6. Install a new water inlet pipe stay bolt.

7. Install the engine oil solenoid valve..

Water Pump Pulley Installation Note

CAUTION:

• Be careful not to damage the belt groove and surface of the water pump pulley when using tools, otherwise it will cause wear, breakage, abnormal noise of the drive belt (stretch belt), damage to the pulley, and rust.

1. Install the water pump pulley to the water pump and temporarily tighten the bolt

2. Align the water pump pulley hole with the water pump hole as shown in the figure.

3. Insert an appropriate bolt (length 70 mm {2.8 in}) into the water pump hole shown in the figure and lock the water pump pulley against rotation.

4. Completely tighten the water pump pulley bolt to the specified torque.

Tightening torque

1. 8—11 N·m {82—112 kgf·cm, 71—97 in·lbf}

5. Remove the bolt used for locking the water pump pulley against rotation.