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Nissan Sentra B18 (2020-2025) Service Manual: Water Pump

Exploded View

Exploded View

1.

Water inlet

2.

Thermostat assembly

3.

Water pump housing

4.

Water pump housing gasket

5.

Water pump

6.

Water pump gasket

7.

O-ring

A.

Refer to Removal and Installation.

B.

To reservoir tank. Refer to Exploded View.

C.

To CVT oil warmer (CVT models only). Refer to Exploded View.

To oil cooler (M/T models only). Refer to Exploded View.

        

Removal and Installation

Removal and Installation

REMOVAL

Disconnect the battery. Refer to Battery Disconnect.

Drain coolant. Refer to Draining.

CAUTION:

  • Do not spill coolant on the drive belt while working.

  • Be sure to perform this operation when engine coolant temperature is cold.

Remove the drive belt. Refer to Removal and Installation.

Remove the water pump bolts and then remove the water pump.

  • Engine coolant remaining in the cylinder block will drain out at this time. Use a tray to collect it.

CAUTION:

  • Do not reuse water pump gasket.

  • Do not allow water pump vane to interfere with other parts.

  • Do not disassemble water pump.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Do not reuse water pump gasket.

Inspection

Inspection

INSPECTION AFTER REMOVAL

Check visually that there is no significant dirt, rusting or corrosion on water pump body and vane (A).

Check that there is no looseness in vane shaft, and that it turns smoothly when rotated by hand.

Replace water pump, if necessary.

INSPECTION AFTER INSTALLATION

Checking for Coolant Leaks

Start the engine.

Check the joints for coolant leaks. Refer to Inspection.

    Cooling Fan
    Exploded View Exploded View 1. Reservoir tank cap 2. Reservoir tank 3. Clamp 4. Reservoir tank hose A 5. Reservoir tank hose B 6. Air guide (RH) 7. Clip 8. Air guide (upper) 9. ...
    Water Pump Housing
    Exploded View Exploded View 1. Water inlet 2. Thermostat assembly 3. Water pump housing 4. Water pump housing gasket 5. Water pump 6. Water pump gasket 7. O-ring A. Refer to Rem...

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