Nissan 21010-ET025 Pump Assembly Water

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Disconnect the cable from the negative terminal of the battery. Loosen the right front wheel lug nuts, raise the front of the vehicle and support it securely on jack stands. Remove the wheel. Drain the cooling system. If the coolant is relatively new, or is in good condition, save it and re-use it. On 2009 and earlier 2.0L models, remove the drivebelt tensioner. On 2010 and later models, remove the alternator. On 2010 and later automatic transaxle equipped models, detach the fluid cooler line from the thermostat housing. Remove the water pump bolts and separate the pump from the pump housing. If the pump is stuck, gently tap it with a soft faced hammer to break the gasket seal. When the pump is removed, coolant can leak from the engine block. Have a container ready to catch the excess coolant. Avoid hitting or bumping the impeller against other parts during this procedure. Remove all old gasket material and clean the mating surfaces on the water pump and engine block. Inspect the pump. Replace the unit if there is dirt or debris on the water pump impeller, the impeller turns smoothly by hand,the shaft is not loose, or the shaft has excessive play. Tighten the pump-to-housing bolts to the torque values. The remainder of installation is the reverse of removal. Refill the cooling system. Reconnect the battery and perform the necessary re-learn procedures. Start the engine and check for any leaks. Re-check coolant fluid levels and add if necessary.

During installation, it's essential to avoid hitting or bumping the impeller against other parts or surfaces.