Nissan Altima 2007-2012 Service Manual: Water pump

Removal and Installation

1. Water pump


1. Water pump

2. Gaskets

3. Water pump housing

4. Water pipe

5. O-ring

WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator.

CAUTION: • When removing water pump assembly, be careful not to get coolant on drive belt.

• Water pump cannot be disassembled and should be replaced as a unit.

• After installing water pump, connect hose and clamp securely, then check for leaks using radiator cap tester.

REMOVAL

1. Drain engine coolant from the radiator. Refer to CO-12, "Changing Engine Coolant".

CAUTION: Perform when the engine is cold.

2. Remove drive belt. Refer to EM-16, "Removal and Installation".

3. Remove engine cover using power tools.

4. Remove generator. Refer to CHG-27, "Removal and Installation".

5. Remove RH wheel and tire assembly. Refer to WT-66, "Adjustment".

6. Remove fender protector RH. Refer to EXT-19, "Removal and Installation" (Coupe models) or EXT-40, "Removal and Installation" (Sedan models).

7. Remove engine ground strap.

8. Remove the water pump.

CAUTION: • Handle the water pump vane so that it does not contact any other parts.

• Water pump cannot be disassembled and should be replaced as an assembly.

NOTE: If it is necessary to remove the water pipe, the exhaust manifold and three way catalyst assembly must be removed. Refer to EM-30, "Removal and Installation".

INSPECTION AFTER REMOVAL

• Visually check that there is no significant dirt or rusting on the water pump body and vane.

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

• If the water pump does not perform properly, replace the water pump assembly.

INSTALLATION


INSTALLATION

Installation is in the reverse order of removal.

• When inserting water pipe end to cylinder block, apply a neutral detergent to O-ring. Then insert it immediately.

INSPECTION AFTER INSTALLATION

• After installation refill engine coolant and check for leaks. Refer to CO-12, "Changing Engine Coolant" and CO-11, "System Inspection".

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