Nissan 21010-0W027 Pump Water

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To replace a water pump, follow these steps: Disconnect the battery's negative terminal. Drain the coolant. Remove drive belts, engine cooling fan, water pump/fan pulley, upper radiator hose, and fan shroud. On 3.3L V6 engines, also remove the idler pulley bracket, crankshaft pulley, and timing belt covers. On 3.5L V6 engines, remove the drain plug, timing chain tensioner cover, and water pump cover. Rotate the crankshaft 20 degrees counterclockwise on 3.5L V6 engines. Remove the water pump, clean bolt threads and threaded holes. Compare pumps and clean mating surfaces with lacquer thinner or acetone. Apply sealant. Attach the new pump finger tight, then tighten bolts in 1/4-turn increments. On 3.5L V6 engines, rotate the crankshaft 20 degrees clockwise and reinstall removed parts. Wait an hour, refill, and bleed the cooling system. Run the engine to check for leaks and proper operation. Note that timing chain noise on 3.5L V6 engines after this procedure is normal until air is bled out. Start the engine and run at 3,000rpm until the noise subsides.